1 Change log file for Exim from version 4.21
2 -------------------------------------------
11 HS/04 Add support for keep_environment and add_environment options.
17 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
18 checkers that were complaining about end of non-void function with no
21 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
22 This was a regression intruduced in 4.83 by another bugfix.
24 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
26 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
27 EXPERIMENTAL_DNS is enabled. Fix from Wolfgang Breyha.
33 TF/01 Correctly close the server side of TLS when forking for delivery.
35 When a message was received over SMTP with TLS, Exim failed to clear up
36 the incoming connection properly after forking off the child process to
37 deliver the message. In some situations the subsequent outgoing
38 delivery connection happened to have the same fd number as the incoming
39 connection previously had. Exim would try to use TLS and fail, logging
40 a "Bad file descriptor" error.
42 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
43 utilities have not been installed.
45 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
46 temporary space as the ACL may create new global variables.
48 TL/01 LDAP support uses per connection or global context settings, depending
49 upon the detected version of the libraries at build time.
51 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
52 to extract and use the src ip:port in logging and expansions as if it
53 were a direct connection from the outside internet. PPv2 support was
54 updated based on HAProxy spec change in May 2014.
56 JH/02 Add ${listextract {number}{list}{success}{fail}}.
58 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
59 Properly escape header and check for NULL return.
61 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
64 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
66 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
67 characters in header names, implemented as a verify condition.
68 Contributed by Michael Fischer v. Mollard.
70 TL/05 Rename SPF condition results err_perm and err_temp to standardized
71 results permerror and temperror. Previous values are deprecated but
72 still accepted. In a future release, err_perm and err_temp will be
73 completely removed, which will be a backward incompatibility if the
74 ACL tests for either of these two old results. Patch contributed by
75 user bes-internal on the mailing list.
77 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
79 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
80 selectors, in both main and reject logs.
82 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
85 JH/07 Add malware type "sock" for talking to simple daemon.
87 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
89 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
90 routers/transports under cutthrough routing.
92 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
93 numbers. Touch up "bool" conditional to keep the same definition.
95 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
97 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
99 JH/12 Expand items in router/transport headers_add or headers_remove lists
100 individually rather than the list as a whole. Bug 1452.
102 Required for reasonable handling of multiple headers_ options when
103 they may be empty; requires that headers_remove items with embedded
104 colons must have them doubled (or the list-separator changed).
106 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
107 view the policy declared in the DMARC record. Currently, $dmarc_status
108 is a combined value of both the record presence and the result of the
111 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
113 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
114 dnslookup router and the smtp transport (applying to the forward
117 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
118 of ldap servers used for a specific lookup. Patch provided by Heiko
121 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
122 New variable $lookup_dnssec_authenticated for observability.
124 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
125 Patch submitted by Lars Timman.
127 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
129 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
130 Requires trusted mode and valid format message id, aborts otherwise.
131 Patch contributed by Heiko Schlichting.
133 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
134 certextract with support for various fields. Bug 1358.
136 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
137 is requested by default, modifiable by smtp transport option
140 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
141 operate on certificate variables to give certificate fingerprints
142 Also new ${sha256:cert_variable}.
144 JH/23 The PRDR feature is moved from being Experimental into the mainline.
146 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
147 Christian Aistleitner.
149 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
151 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
152 file. Patch from Wolfgang Breyha.
154 JH/25 Expand the coverage of the delivery $host and $host_address to
155 client authenticators run in verify callout. Bug 1476.
157 JH/26 Port service names are now accepted for tls_on_connect_ports, to
158 align with daemon_smtp_ports. Bug 72.
160 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
161 support and error reporting did not work properly.
163 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
164 and is readable. Patch from Andrew Colin Kissa.
166 TL/14 Enhance documentation of ${run expansion and how it parses the
167 commandline after expansion, particularly in the case when an
168 unquoted variable expansion results in an empty value.
170 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
172 PP/02 Fix internal collision of T_APL on systems which support RFC3123
173 by renaming away from it. Addresses GH issue 15, reported by
176 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
178 TL/15 SECURITY: prevent double expansion in math comparison functions
179 (can expand unsanitized data). Not remotely exploitable.
186 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
188 PP/02 Make -n do something, by making it not do something.
189 When combined with -bP, the name of an option is not output.
191 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
194 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
195 $sender_host_name and config options to manage this, and basic check
198 PP/05 DSCP support for outbound connections and control modifier for inbound.
200 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
201 (Only plugin which currently uses this is kerberos4, which nobody should
202 be using, but we should make it available and other future plugins might
203 conceivably use it, even though it would break NAT; stuff *should* be
204 using channel bindings instead).
206 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
207 name; added for Sendmail compatibility; requires admin caller.
208 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
209 just ignore it); requires trusted caller.
210 Also parse but ignore: -Ac -Am -X<logfile>
213 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
215 TL/02 Add +smtp_confirmation as a default logging option.
217 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
218 Patch by Magnus Holmgren from 2007-02-20.
220 TL/04 Bugzilla 1281 - Spec typo.
221 Bugzilla 1283 - Spec typo.
222 Bugzilla 1290 - Spec grammar fixes.
224 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
226 TL/06 Add Experimental DMARC support using libopendmarc libraries.
228 TL/07 Fix an out of order global option causing a segfault. Reported to dev
229 mailing list by by Dmitry Isaikin.
231 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
233 JH/02 Support "G" suffix to numbers in ${if comparisons.
235 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
237 NM/01 Bugzilla 1197 - Spec typo
238 Bugzilla 1196 - Spec examples corrections
240 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
242 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
243 gnutls_enable_pkcs11, but renamed to more accurately indicate its
246 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
247 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
249 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
250 "acl {{name}{arg}...}", and optional args on acl condition
253 JH/05 Permit multiple router/transport headers_add/remove lines.
255 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
257 JH/07 Avoid using a waiting database for a single-message-only transport.
258 Performance patch from Paul Fisher. Bugzilla 1262.
260 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
263 JH/09 Add $headers_added variable, with content from use of ACL modifier
264 add_header (but not yet added to the message). Bugzilla 199.
266 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
267 Pulled from Bugzilla 817 by Wolfgang Breyha.
269 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
271 (nb: this is the same fix as in Exim 4.80.1)
273 JH/11 Add A= logging on delivery lines, and a client_set_id option on
276 JH/12 Add optional authenticated_sender logging to A= and a log_selector
279 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
281 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
282 advertise SMTP AUTH mechanism to us, instead of a generic
283 protocol violation error. Also, make Exim more robust to bad
284 data from the Dovecot auth socket.
286 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
288 When a queue runner is handling a message, Exim first routes the
289 recipient addresses, during which it prunes them based on the retry
290 hints database. After that it attempts to deliver the message to
291 any remaining recipients. It then updates the hints database using
294 So if a recipient address works intermittently, it can get repeatedly
295 deferred at routing time. The retry hints record remains fresh so the
296 address never reaches the final cutoff time.
298 This is a fairly common occurrence when a user is bumping up against
299 their storage quota. Exim had some logic in its local delivery code
300 to deal with this. However it did not apply to per-recipient defers
301 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
303 This change adds a proper retry rule check during routing so that the
304 final cutoff time is checked against the message's age. We only do
305 this check if there is an address retry record and there is not a
306 domain retry record; this implies that previous attempts to handle
307 the address had the retry_use_local_parts option turned on. We use
308 this as an approximation for the destination being like a local
309 delivery, as in LMTP.
311 I suspect this new check makes the old local delivery cutoff check
312 redundant, but I have not verified this so I left the code in place.
314 TF/02 Correct gecos expansion when From: is a prefix of the username.
316 Test 0254 submits a message to Exim with the header
320 When I ran the test suite under the user fanf2, Exim expanded
321 the header to contain my full name, whereas it should have added
322 a Resent-Sender: header. It erroneously treats any prefix of the
323 username as equal to the username.
325 This change corrects that bug.
327 GF/01 DCC debug and logging tidyup
328 Error conditions log to paniclog rather than rejectlog.
329 Debug lines prefixed by "DCC: " to remove any ambiguity.
331 TF/03 Avoid unnecessary rebuilds of lookup-related code.
333 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
334 Bug spotted by Jeremy Harris; was flawed since initial commit.
335 Would have resulted in OCSP responses post-SNI triggering an Exim
336 NULL dereference and crash.
338 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
340 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
341 Bug detection, analysis and fix by Samuel Thibault.
342 Bugzilla 1331, Debian bug #698092.
344 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
346 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
347 Server implementation by Todd Lyons, client by JH.
348 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
349 config variable "prdr_enable" controls whether the server
350 advertises the facility. If the client requests PRDR a new
351 acl_data_smtp_prdr ACL is called once for each recipient, after
352 the body content is received and before the acl_smtp_data ACL.
353 The client is controlled by bolth of: a hosts_try_prdr option
354 on the smtp transport, and the server advertisement.
355 Default client logging of deliveries and rejections involving
356 PRDR are flagged with the string "PRDR".
358 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
359 fclose(). Diagnosis by Todd Lyons.
361 PP/17 Update configure.default to handle IPv6 localhost better.
362 Patch by Alain Williams (plus minor tweaks).
365 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
366 This is now consistent with GnuTLS, and is now documented: the
367 previous undocumented portable approach to treating the option as
368 unset was to force an expansion failure. That still works, and
369 an empty string is now equivalent.
371 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
372 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
373 not performing validation itself.
375 PP/20 Added force_command boolean option to pipe transport.
376 Patch from Nick Koston, of cPanel Inc.
378 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
381 TF/04 Added udpsend ACL modifer and hexquote expansion operator
383 PP/21 Fix eximon continuous updating with timestamped log-files.
384 Broken in a format-string cleanup in 4.80, missed when I repaired the
385 other false fix of the same issue.
386 Report and fix from Heiko Schlichting.
389 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
390 Report from Prashanth Katuri.
392 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
393 It's SecureTransport, so affects any MacOS clients which use the
394 system-integrated TLS libraries, including email clients.
396 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
397 using a MIME ACL for non-SMTP local injection.
398 Report and assistance in diagnosis by Warren Baker.
400 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
402 JH/16 Fix comparisons for 64b. Bugzilla 1385.
404 TL/09 Add expansion variable $authenticated_fail_id to keep track of
405 last id that failed so it may be referenced in subsequent ACL's.
407 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
410 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
411 ldap library initialization, allowing self-signed CA's to be
412 used. Also properly sets require_cert option later in code by
413 using NULL (global ldap config) instead of ldap handle (per
414 session). Bug diagnosis and testing by alxgomz.
416 TL/12 Enhanced documentation in the ratelimit.pl script provided in
417 the src/util/ subdirectory.
419 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
420 renamed to Transport Post Delivery Action by Jeremy Harris, as
423 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
424 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
425 redis_servers = needs to be configured which will be used by the redis
426 lookup. Patch from Warren Baker, of The Packet Hub.
428 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
430 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
431 hostname or reverse DNS when processing a host list. Used suggestions
432 from multiple comments on this bug.
434 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
436 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
437 Missed a few lines, added it to make the runtest require no keyboard
440 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
441 contains upper case chars. Make router use caseful_local_part.
443 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
444 support when GnuTLS has been built with p11-kit.
450 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
452 This, or similar/improved, will also be change PP/11 of 4.82.
458 PP/01 Handle short writes when writing local log-files.
459 In practice, only affects FreeBSD (8 onwards).
460 Bugzilla 1053, with thanks to Dmitry Isaikin.
462 NM/01 Bugzilla 949 - Documentation tweak
464 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
467 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
469 PP/02 Implemented gsasl authenticator.
471 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
473 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
474 `pkg-config foo` for cflags/libs.
476 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
477 with rest of GSASL and with heimdal_gssapi.
479 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
480 `pkg-config foo` for cflags/libs for the TLS implementation.
482 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
483 properties get this fed in as external SSF. A number of robustness
484 and debugging improvements to the cyrus_sasl authenticator.
486 PP/08 cyrus_sasl server now expands the server_realm option.
488 PP/09 Bugzilla 1214 - Log authentication information in reject log.
489 Patch by Jeremy Harris.
491 PP/10 Added dbmjz lookup type.
493 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
495 PP/12 MAIL args handles TAB as well as SP, for better interop with
496 non-compliant senders.
497 Analysis and variant patch by Todd Lyons.
499 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
500 Bug report from Lars Müller <lars@samba.org> (via SUSE),
501 Patch from Dirk Mueller <dmueller@suse.com>
503 PP/13 tls_peerdn now print-escaped for spool files.
504 Observed some $tls_peerdn in wild which contained \n, which resulted
505 in spool file corruption.
507 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
508 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
509 or write after TLS renegotiation, which otherwise led to messages
512 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
513 as a tracking header (ie: a signed header comes before the signature).
514 Patch from Wolfgang Breyha.
516 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
517 comma-sep list; embedded commas doubled.
519 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
521 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
523 Report and patch from Dmitry Banschikov.
525 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
526 Removed SSL_clear() after SSL_new() which led to protocol negotiation
527 failures. We appear to now support TLS1.1+ with Exim.
529 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
530 lets Exim select keys and certificates based upon TLS SNI from client.
531 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
532 before an outbound SMTP session. New log_selector, +tls_sni.
534 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
535 NULL dereference. Report and patch from Alun Jones.
537 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
538 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
539 Not seeing resolver debug output on NetBSD, but suspect this is a
540 resolver implementation change.
542 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
543 Left warnings. Added "eximon gdb" invocation mode.
545 PP/21 Defaulting "accept_8bitmime" to true, not false.
547 PP/22 Added -bw for inetd wait mode support.
549 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
550 locate the relevant includes and libraries. Made this the default.
552 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
553 Bugzilla 1246, report and most of solution from Tomasz Kusy.
555 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
556 This may cause build issues on older platforms.
558 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
559 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
560 gnutls_require_mac & gnutls_require_protocols (no longer supported).
561 Added SNI support via GnuTLS too.
562 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
564 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
566 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
567 Applied second patch from Janne, implementing suggestion to default
568 multiple-strings-in-record handling to match SPF spec.
570 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
572 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
573 read-only, out of scope).
574 Patch from Wolfgang Breyha, report from Stuart Northfield.
576 PP/29 Fix three issues highlighted by clang analyser static analysis.
577 Only crash-plausible issue would require the Cambridge-specific
578 iplookup router and a misconfiguration.
579 Report from Marcin Mirosław.
581 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
583 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
584 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
585 As part of this, removing so much warning spew let me fix some minor
586 real issues in debug logging.
588 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
589 assignment on my part. Fixed.
591 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
592 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
593 Janne Snabb (who went above and beyond: thank you).
595 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
596 string otherwise requires a connection and a bunch more work and it's
597 relatively easy to get wrong. Should also expose TLS library linkage
600 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
601 64-bit ${eval} (JH/03).
603 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
604 GNU libc to support some of the 64-bit stuff, should not lead to
605 conflicts. Defined before os.h is pulled in, so if a given platform
606 needs to override this, it can.
608 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
609 protection layer was required, which is not implemented.
610 Bugzilla 1254, patch from Wolfgang Breyha.
612 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
613 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
614 tls_dhparam take prime identifiers. Also unbreak combination of
615 OpenSSL+DH_params+TLSSNI.
617 PP/39 Disable SSLv2 by default in OpenSSL support.
623 PP/01 Solaris build fix for Oracle's LDAP libraries.
624 Bugzilla 1109, patch from Stephen Usher.
626 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
628 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
631 TF/02 Fix a couple more cases where we did not log the error message
632 when unlink() failed. See also change 4.74-TF/03.
634 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
635 lock up or crash if it happened to be inside a call to libc when it
636 got a SIGUSR1 from exiwhat.
638 The SIGUSR1 handler appends the current process status to the process
639 log which is later printed by exiwhat. It used to use the general
640 purpose logging code to do this, but several functions it calls are
641 not safe for signals.
643 The new output code in the SIGUSR1 handler is specific to the process
644 log, and simple enough that it's easy to inspect for signal safety.
645 Removing some special cases also simplifies the general logging code.
646 Removing the spurious timestamps from the process log simplifies
649 TF/04 Improved ratelimit ACL condition.
651 The /noupdate option has been deprecated in favour of /readonly which
652 has clearer semantics. The /leaky, /strict, and /readonly update modes
653 are mutually exclusive. The update mode is no longer included in the
654 database key; it just determines when the database is updated. (This
655 means that when you upgrde Exim will forget old rate measurements.)
657 Exim now checks that the per_* options are used with an update mode that
658 makes sense for the current ACL. For example, when Exim is processing a
659 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
660 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
661 must specify per_mail/readonly. If you omit the update mode it defaults to
662 /leaky where that makes sense (as before) or /readonly where required.
664 The /noupdate option is now undocumented but still supported for
665 backwards compatibility. It is equivalent to /readonly except that in
666 ACLs where /readonly is required you may specify /leaky/noupdate or
667 /strict/noupdate which are treated the same as /readonly.
669 A useful new feature is the /count= option. This is a generalization
670 of the per_byte option, so that you can measure the throughput of other
671 aggregate values. For example, the per_byte option is now equivalent
672 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
674 The per_rcpt option has been generalized using the /count= mechanism
675 (though it's more complicated than the per_byte equivalence). When it is
676 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
677 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
678 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
679 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
680 Note that using per_rcpt with a non-readonly update mode in more than
681 one ACL will cause the recipients to be double-counted. (The per_mail
682 and per_byte options don't have this problem.)
684 The handling of very low rates has changed slightly. If the computed rate
685 is less than the event's count (usually one) then this event is the first
686 after a long gap. In this case the rate is set to the same as this event's
687 count, so that the first message of a spam run is counted properly.
689 The major new feature is a mechanism for counting the rate of unique
690 events. The new per_addr option counts the number of different
691 recipients that someone has sent messages to in the last time period. It
692 behaves like per_rcpt if all the recipient addresses are different, but
693 duplicate recipient addresses do not increase the measured rate. Like
694 the /count= option this is a general mechanism, so the per_addr option
695 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
696 example, measure the rate that a client uses different sender addresses
697 with the options per_mail/unique=$sender_address. There are further
698 details in the main documentation.
700 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
702 TF/06 Removed a few PCRE remnants.
704 TF/07 Automatically extract Exim's version number from tags in the git
705 repository when doing development or release builds.
707 PP/02 Raise smtp_cmd_buffer_size to 16kB.
708 Bugzilla 879. Patch from Paul Fisher.
710 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
711 Heavily based on revision 40f9a89a from Simon Arlott's tree.
714 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
716 PP/05 Variable $av_failed, true if the AV scanner deferred.
717 Bugzilla 1078. Patch from John Horne.
719 PP/06 Stop make process more reliably on build failure.
720 Bugzilla 1087. Patch from Heiko Schlittermann.
722 PP/07 Make maildir_use_size_file an _expandable_ boolean.
723 Bugzilla 1089. Patch from Heiko Schlittermann.
725 PP/08 Handle ${run} returning more data than OS pipe buffer size.
726 Bugzilla 1131. Patch from Holger Weiß.
728 PP/09 Handle IPv6 addresses with SPF.
729 Bugzilla 860. Patch from Wolfgang Breyha.
731 PP/10 GnuTLS: support TLS 1.2 & 1.1.
733 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
736 PP/11 match_* no longer expand right-hand-side by default.
737 New compile-time build option, EXPAND_LISTMATCH_RHS.
738 New expansion conditions, "inlist", "inlisti".
740 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
742 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
744 PP/14 fix log_write() format string regression from TF/03.
745 Bugzilla 1152. Patch from Dmitry Isaikin.
751 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
753 PP/02 Harmonised TLS library version reporting; only show if debugging.
754 Layout now matches that introduced for other libraries in 4.74 PP/03.
756 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
758 PP/04 New "dns_use_edns0" global option.
760 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
763 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
764 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
766 TK/01 Updated PolarSSL code to 0.14.2.
767 Bugzilla 1097. Patch from Andreas Metzler.
769 PP/07 Catch divide-by-zero in ${eval:...}.
772 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
775 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
776 format-string attack -- SECURITY: remote arbitrary code execution.
778 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
779 time unintentionally subject to list matching rules, letting the header
780 cause arbitrary Exim lookups (of items which can occur in lists, *not*
781 arbitrary string expansion). This allowed for information disclosure.
783 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
784 INT_MIN/-1 -- value coerced to INT_MAX.
790 NM/01 Workround for PCRE version dependency in version reporting
793 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
794 This fixes portability to compilers other than gcc, notably
795 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
797 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
798 makefiles for portability to HP-UX and POSIX correctness.
800 PP/01 Permit LOOKUP_foo enabling on the make command-line.
801 Also via indented variable definition in the Makefile.
802 (Debugging by Oliver Heesakkers).
804 PP/02 Restore caching of spamd results with expanded spamd_address.
805 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
807 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
808 Improves build reliability. Fix from: Frank Elsner
810 NM/02 Fix wide character breakage in the rfc2047 coding
811 Fixes bug 1064. Patch from Andrey N. Oktyabrski
813 NM/03 Allow underscore in dnslist lookups
814 Fixes bug 1026. Patch from Graeme Fowler
816 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
817 Code patches from Adam Ciarcinski of NetBSD.
819 NM/04 Fixed exiqgrep to cope with mailq missing size issue
822 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
823 is logged, to avoid truncation. Patch from John Horne.
825 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
826 Patch from Jakob Hirsch.
828 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
829 SQL string expansion failure details.
830 Patch from Andrey Oktyabrski.
832 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
833 Patch from Simon Arlott.
835 PP/09 New lookups functionality failed to compile on old gcc which rejects
836 extern declarations in function scope.
837 Patch from Oliver Fleischmann
839 PP/10 Use sig_atomic_t for flags set from signal handlers.
840 Check getgroups() return and improve debugging.
841 Fixed developed for diagnosis in bug 927 (which turned out to be
844 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
845 Patch from Mark Zealey.
847 PP/12 Bugzilla 1056: Improved spamd server selection.
848 Patch from Mark Zealey.
850 PP/13 Bugzilla 1086: Deal with maildir quota file races.
851 Based on patch from Heiko Schlittermann.
853 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
854 Patch from Uwe Doering, sign-off by Michael Haardt.
856 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
857 variable declaration deep within a block. Bug and patch from
860 PP/15 lookups-Makefile IRIX compatibilty coercion.
862 PP/16 Make DISABLE_DKIM build knob functional.
864 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
865 Patch by Simon Arlott
867 TF/03 Fix valgrind.h portability to C89 compilers that do not support
868 variable argument macros. Our copy now differs from upstream.
874 TF/01 Failure to get a lock on a hints database can have serious
875 consequences so log it to the panic log.
877 TF/02 Log LMTP confirmation messages in the same way as SMTP,
878 controlled using the smtp_confirmation log selector.
880 TF/03 Include the error message when we fail to unlink a spool file.
882 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
883 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
884 for maintaining out-of-tree patches for some time.
886 PP/01 Bugzilla 139: Documentation and portability issues.
887 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
888 Handle per-OS dynamic-module compilation flags.
890 PP/02 Let /dev/null have normal permissions.
891 The 4.73 fixes were a little too stringent and complained about the
892 permissions on /dev/null. Exempt it from some checks.
893 Reported by Andreas M. Kirchwitz.
895 PP/03 Report version information for many libraries, including
896 Exim version information for dynamically loaded libraries. Created
897 version.h, now support a version extension string for distributors
898 who patch heavily. Dynamic module ABI change.
900 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
901 privilege escalation vulnerability whereby the Exim run-time user
902 can cause root to append content of the attacker's choosing to
905 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
908 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
909 If dropping privileges for untrusted macros, we disabled normal logging
910 on the basis that it would fail; for the Exim run-time user, this is not
911 the case, and it resulted in successful deliveries going unlogged.
912 Fixed. Reported by Andreas Metzler.
918 PP/01 Date: & Message-Id: revert to normally being appended to a message,
919 only prepend for the Resent-* case. Fixes regression introduced in
920 Exim 4.70 by NM/22 for Bugzilla 607.
922 PP/02 Include check_rfc2047_length in configure.default because we're seeing
923 increasing numbers of administrators be bitten by this.
925 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
927 PP/03 Bugzilla 994: added openssl_options main configuration option.
929 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
931 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
933 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
935 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
936 without a peer certificate, leading to a segfault because of an
937 assumption that peers always have certificates. Be a little more
938 paranoid. Problem reported by Martin Tscholak.
940 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
941 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
942 NB: ClamAV planning to remove STREAM in "middle of 2010".
943 CL also introduces -bmalware, various -d+acl logging additions and
944 more caution in buffer sizes.
946 PP/09 Implemented reverse_ip expansion operator.
948 PP/10 Bugzilla 937: provide a "debug" ACL control.
950 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
952 PP/12 Bugzilla 973: Implement --version.
954 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
956 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
958 PP/15 Bugzilla 816: support multiple condition rules on Routers.
960 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
961 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
962 ignore trailing whitespace.
964 JJ/02 prevent non-panic DKIM error from being sent to paniclog
966 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
969 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
970 Notification from Dr Andrew Aitchison.
972 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
973 ExtendedDetectionInfo response format.
974 Notification from John Horne.
976 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
979 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
980 XSL and documented dependency on system catalogs, with examples of how
983 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
986 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
987 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
988 configuration file which is writeable by the Exim user or group.
990 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
991 of configuration files to cover files specified with the -C option if
992 they are going to be used with root privileges, not just the default
995 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
996 option (effectively making it always true).
998 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
999 files to be used while preserving root privileges.
1001 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1002 that rogue child processes cannot use them.
1004 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1005 run-time user, instead of root.
1007 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1008 Exim run-time user without dropping privileges.
1010 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1011 result string, instead of calling string_vformat() twice with the same
1014 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1015 for other users. Others should always drop root privileges if they use
1016 -C on the command line, even for a whitelisted configure file.
1018 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1020 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1026 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1027 $data_path, and $header_path variables; fixed documentation bugs and
1030 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1031 exipick to access non-standard spools, including the "frozen" queue
1034 NM/01 Bugzilla 965: Support mysql stored procedures.
1035 Patch from Alain Williams
1037 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1039 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1040 Patch from Andreas Metzler
1042 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1043 Patch from Kirill Miazine
1045 NM/05 Bugzilla 671: Added umask to procmail example.
1047 JJ/03 installed exipick 20100323.0, fixing doc bug
1049 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1050 directory. Notification and patch from Dan Rosenberg.
1052 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1054 TK/02 Improve log output when DKIM signing operation fails.
1056 MH/01 Treat the transport option dkim_domain as a colon separated
1057 list, not as a single string, and sign the message with each element,
1058 omitting multiple occurences of the same signer.
1060 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1061 Bugzilla 985, 986. Patch by Simon Arlott
1063 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1064 Patch by Simon Arlott
1066 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1067 MBX locking. Notification from Dan Rosenberg.
1073 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1075 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1077 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1079 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1081 NM/04 Bugzilla 915: Flag broken perl installation during build.
1087 TK/01 Added patch by Johannes Berg that expands the main option
1088 "spamd_address" if it starts with a dollar sign.
1090 TK/02 Write list of recipients to X-Envelope-Sender header when building
1091 the mbox-format spool file for content scanning (suggested by Jakob
1094 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1095 (http://www.dcc-servers.net/) support via dccifd. Activated by
1096 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1098 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1099 by Mark Daniel Reidel <mr@df.eu>.
1101 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1102 When building exim an external PCRE library is now needed -
1103 PCRE is a system library on the majority of modern systems.
1104 See entry on PCRE_LIBS in EDITME file.
1106 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1107 conversation. Added nologin parameter to request.
1108 Patch contributed by Kirill Miazine.
1110 TF/01 Do not log submission mode rewrites if they do not change the address.
1112 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1114 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1115 log files in place. Contributed by Roberto Lima.
1117 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1119 TF/03 Bugzilla 615: When checking the local_parts router precondition
1120 after a local_part_suffix or local_part_prefix option, Exim now
1121 does not use the address's named list lookup cache, since this
1122 contains cached lookups for the whole local part.
1124 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1125 Robert Millan. Documentation is in experimental-spec.txt.
1127 TF/04 Bugzilla 668: Fix parallel build (make -j).
1129 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1131 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1132 Patch provided by Jan Srzednicki.
1134 TF/05 Leading white space used to be stripped from $spam_report which
1135 wrecked the formatting. Now it is preserved.
1137 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1138 that they are available at delivery time.
1140 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1142 TF/08 TLS error reporting now respects the incoming_interface and
1143 incoming_port log selectors.
1145 TF/09 Produce a more useful error message if an SMTP transport's hosts
1146 setting expands to an empty string.
1148 NM/06 Bugzilla 744: EXPN did not work under TLS.
1149 Patch provided by Phil Pennock.
1151 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1152 Patch provided by Richard Godbee.
1154 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1155 acl_smtp_notquit, added index entry.
1157 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1158 Patch provided by Eugene Bujak.
1160 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1161 accept(). Patch provided by Maxim Dounin.
1163 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1164 Patch provided by Phil Pennock.
1166 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1168 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1169 Patch provided by Brad "anomie" Jorsch.
1171 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1172 Patch provided by Dean Brooks.
1174 TK/05 Add native DKIM support (does not depend on external libraries).
1176 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1177 Patch provided by Graeme Fowler.
1179 NM/16 Bugzilla 851: Documentation example syntax fix.
1181 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1183 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1186 NM/19 Bugzilla 745: TLS version reporting.
1187 Patch provided by Phil Pennock.
1189 NM/20 Bugzilla 167: bool: condition support.
1190 Patch provided by Phil Pennock.
1192 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1193 clients. Patch provided by Phil Pennock.
1195 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1196 Patch provided by Brad "anomie" Jorsch.
1198 NM/23 Bugzilla 687: Fix misparses in eximstats.
1199 Patch provided by Heiko Schlittermann.
1201 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1202 Patch provided by Heiko Schlittermann.
1204 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1205 plus update to original patch.
1207 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1209 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1210 Patch provided by David Brownlee.
1212 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1214 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1216 NM/30 Bugzilla 888: TLS documentation bugfixes.
1218 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1220 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1221 Unlike the original bugzilla I have changed all shell scripts in src tree.
1223 NM/33 Bugzilla 898: Transport filter timeout fix.
1224 Patch by Todd Rinaldo.
1226 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1227 Patch by Serge Demonchaux.
1229 NM/35 Bugzilla 39: Base64 decode bug fixes.
1230 Patch by Jakob Hirsch.
1232 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1234 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1236 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1238 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1244 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1245 ALT-N's libdkim that I have put here:
1246 http://duncanthrax.net/exim-experimental/
1248 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1249 were called 'true' and it seems that C99 defines that as a reserved
1250 keyword to be used with 'bool' variable types. That means you could
1251 not include C99-style headers which use bools without triggering
1252 build errors in sieve.c.
1254 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1255 as mailq or other aliases. Changed the --help handling significantly
1256 to do whats expected. exim_usage() emits usage/help information.
1258 SC/01 Added the -bylocaldomain option to eximstats.
1260 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1262 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1264 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1270 PH/01 Another patch from the Sieve maintainer.
1272 PH/02 When an IPv6 address is converted to a string for single-key lookup
1273 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1274 dots are used instead of colons so that keys in lsearch files need not
1275 contain colons. This was done some time before quoting was made available
1276 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1277 (notated using the quote facility) so as to distinguish them from IPv4
1278 keys. This meant that lookups for IP addresses in host lists did not work
1279 for iplsearch lookups.
1281 This has been fixed by arranging for IPv6 addresses to be expressed with
1282 colons if the lookup type is iplsearch. This is not incompatible, because
1283 previously such lookups could never work.
1285 The situation is now rather anomolous, since one *can* have colons in
1286 ordinary lsearch keys. However, making the change in all cases is
1287 incompatible and would probably break a number of configurations.
1289 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1292 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1293 conversion specification without a maximum field width, thereby enabling
1294 a rogue spamd server to cause a buffer overflow. While nobody in their
1295 right mind would setup Exim to query an untrusted spamd server, an
1296 attacker that gains access to a server running spamd could potentially
1297 exploit this vulnerability to run arbitrary code as the Exim user.
1299 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1300 $primary_hostname instead of what libspf2 thinks the hosts name is.
1302 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1303 a directory entry by the name of the lookup key. Previously, if a
1304 symlink pointed to a non-existing file or a file in a directory that
1305 Exim lacked permissions to read, a lookup for a key matching that
1306 symlink would fail. Now it is enough that a matching directory entry
1307 exists, symlink or not. (Bugzilla 503.)
1309 PH/03 The body_linecount and body_zerocount variables are now exported in the
1312 PH/04 Added the $dnslist_matched variable.
1314 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1315 This means they are set thereafter only if the connection becomes
1318 PH/06 Added the client_condition to authenticators so that some can be skipped
1319 by clients under certain conditions.
1321 PH/07 The error message for a badly-placed control=no_multiline_responses left
1322 "_responses" off the end of the name.
1324 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1326 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1327 (without spaces) instead of just copying the configuration text.
1329 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1331 PH/11 Added $max_received_linelength.
1333 PH/12 Added +ignore_defer and +include_defer to host lists.
1335 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1336 way in which PCRE > 7.0 is built.
1338 PH/14 Implemented queue_only_load_latch.
1340 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1341 MAIL command. The effect was to mangle the value on 64-bit systems.
1343 PH/16 Another patch from the Sieve maintainer.
1345 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1347 PH/18 If a system quota error occurred while trying to create the file for
1348 a maildir delivery, the message "Mailbox is full" was not appended to the
1349 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1350 only to a quota excession during the actual writing of the file.
1352 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1353 characters?) which causes problems in log lines. The DN values are now
1354 passed through string_printing() before being added to log lines.
1356 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1357 and InterBase are left for another time.)
1359 PH/21 Added message_body_newlines option.
1361 PH/22 Guard against possible overflow in moan_check_errorcopy().
1363 PH/23 POSIX allows open() to be a macro; guard against that.
1365 PH/24 If the recipient of an error message contained an @ in the local part
1366 (suitably quoted, of course), incorrect values were put in $domain and
1367 $local_part during the evaluation of errors_copy.
1373 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1374 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1377 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1378 issue a MAIL command.
1380 PH/02 In an ACL statement such as
1382 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1384 if a client was not listed at all, or was listed with a value other than
1385 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1386 the condition was not true (as it should be), so access was not denied.
1387 The bug was that the ! inversion was incorrectly passed on to the second
1388 item. This has been fixed.
1390 PH/03 Added additional dnslists conditions == and =& which are different from
1391 = and & when the dns lookup returns more than one IP address.
1393 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1394 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1396 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1397 FSYNC, which compiles an option called disable_fsync that allows for
1398 bypassing fsync(). The documentation is heavily laced with warnings.
1400 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1402 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1403 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1404 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1405 including adding "make clean"; (3) Added -fPIC when compiling the test
1406 dynamically loaded module, to get rid of a warning.
1408 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1409 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1410 = 0s. The bug is otherwise harmless.
1412 PH/07 There was a bug in the dovecot authenticator such that the value of
1413 $auth1 could be overwritten, and so not correctly preserved, after a
1414 successful authentication. This usually meant that the value preserved by
1415 the server_setid option was incorrect.
1417 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1419 PH/09 Installed PCRE release 7.0.
1421 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1422 run for batched SMTP input. It is now run at the start of every message
1423 in the batch. While fixing this I discovered that the process information
1424 (output by running exiwhat) was not always getting set for -bs and -bS
1425 input. This is fixed, and it now also says "batched" for BSMTP.
1427 PH/11 Added control=no_pipelining.
1429 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1430 patch, slightly modified), and move the expansion of helo_data till after
1431 the connection is made in the smtp transport (so it can use these
1434 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1436 PH/14 Added log_selector = +pid.
1438 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1440 PH/16 Add ${if forany and ${if forall.
1442 PH/17 Added dsn_from option to vary the From: line in DSNs.
1444 PH/18 Flush SMTP output before performing a callout, unless control =
1445 no_callout_flush is set.
1447 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1448 was true (the default) a successful delivery failed to delete the retry
1449 item, thus causing premature timeout of the address. The bug is now
1452 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1454 PH/21 Long custom messages for fakedefer and fakereject are now split up
1455 into multiline reponses in the same way that messages for "deny" and
1456 other ACL rejections are.
1458 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1459 with slight modification.
1461 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1462 draft, changing the syntax and factoring some duplicate code".
1464 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1465 for deliveries of the second and subsequent messages over the same SMTP
1468 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1469 ${reduce, with only minor "tidies".
1471 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1473 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1474 expansion side effects.
1476 PH/27 When a message times out after an over-quota error from an Exim-imposed
1477 quota, the bounce message says "mailbox is full". This message was not
1478 being given when it was a system quota that was exceeded. It now should
1481 MH/03 Made $recipients available in local_scan(). local_scan() already has
1482 better access to the recipient list through recipients_list[], but
1483 $recipients can be useful in postmaster-provided expansion strings.
1485 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1486 in the case of a MAIL command with additional options following the
1487 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1488 were accidentally chopped off.
1490 PH/29 SMTP synchronization checks are implemented when a command is read -
1491 there is a check that no more input is waiting when there shouldn't be
1492 any. However, for some commands, a delay in an ACL can mean that it is
1493 some time before the response is written. In this time, more input might
1494 arrive, invalidly. So now there are extra checks after an ACL has run for
1495 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1496 pipelining has not been advertised.
1498 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1500 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1501 returned in the SMTP response when smtp_return_error_details was false.
1502 This has been fixed.
1504 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1505 instead of the C I/O that was originally supplied, because problems were
1506 reported on Solaris.
1508 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1509 Exim which did not show up earlier: it was assuming that a call to
1510 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1511 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1512 was a macro that became an assignment, so it seemed to work. This has
1513 changed to a proper function call with a void return, hence the compile
1514 error. Exim's code has been fixed.
1516 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1519 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1521 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1523 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1524 because it turns out to be too big or there is a timeout) there is no
1525 "Completed" line in the log. When some messages of this type were
1526 selected by exigrep, they were listed as "not completed". Others were
1527 picked up by some special patterns. I have improved the selection
1528 criteria to be more general.
1530 PH/38 The host_find_failed option in the manualroute router can now be set
1531 to "ignore", to completely ignore a host whose IP address cannot be
1532 found. If all hosts are ignored, the behaviour is controlled by the new
1533 host_all_ignored option.
1535 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1536 homing or because of multiple MX records with /mx) generated more than
1537 one IP address, and the following item turned out to be the local host,
1538 all the secondary addresses of the first item were incorrectly removed
1539 from the list, along with the local host and any following hosts (which
1540 is what is supposed to happen).
1542 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1543 whoever called Exim into the -H file. In the case of the daemon it was
1544 behaving confusingly. When first started, it used values for whoever
1545 started the daemon, but after a SIGHUP it used the Exim user (because it
1546 calls itself on a restart). I have changed the code so that it now always
1549 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1550 message are rejected with the same error (e.g. no authentication or bad
1551 sender address), and a DATA command is nevertheless sent (as can happen
1552 with PIPELINING or a stupid MUA), the error message that was given to the
1553 RCPT commands is included in the rejection of the DATA command. This is
1554 intended to be helpful for MUAs that show only the final error to their
1557 PH/42 Another patch from the Sieve maintainer.
1559 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1560 Eximstats - Fixed some broken HTML links and added missing column headers
1562 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1563 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1565 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1567 PH/43 Yet another patch from the Sieve maintainer.
1569 PH/44 I found a way to check for a TCP/IP connection going away before sending
1570 the response to the final '.' that terminates a message, but only in the
1571 case where the client has not sent further data following the '.'
1572 (unfortunately, this is allowed). However, in many cases there won't be
1573 any further data because there won't be any more messages to send. A call
1574 to select() can be used: if it shows that the input is "ready", there is
1575 either input waiting, or the socket has been closed. An attempt to read
1576 the next input character can distinguish the two cases. Previously, Exim
1577 would have sent an OK response which the client would never have see.
1578 This could lead to message repetition. This fix should cure that, at
1579 least in a lot of common cases.
1581 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1582 advertised in response to EHLO.
1588 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1589 fixed by 4.65/MH/01 (is this a record?) are fixed:
1591 (i) An empty string was always treated as zero by the numeric comparison
1592 operators. This behaviour has been restored.
1594 (ii) It is documented that the numeric comparison operators always treat
1595 their arguments as decimal numbers. This was broken in that numbers
1596 starting with 0 were being interpreted as octal.
1598 While fixing these problems I realized that there was another issue that
1599 hadn't been noticed. Values of message_size_limit (both the global option
1600 and the transport option) were treated as octal if they started with 0.
1601 The documentation was vague. These values are now always treated as
1602 decimal, and I will make that clear in the documentation.
1608 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1609 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1612 MH/01 Don't check that the operands of numeric comparison operators are
1613 integers when their expansion is in "skipping" mode (fixes bug
1614 introduced by 4.64-PH/07).
1616 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1617 child addresses, Exim now panics and dies. Previously, because the count
1618 is held in a short int, deliveries were likely to be lost. As such a
1619 large number of recipients for a single message is ridiculous
1620 (performance will be very, very poor), I have chosen to impose a limit
1621 rather than extend the field.
1627 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1628 leftover -K file (the existence of which was triggered by #402).
1629 While we were at it, introduced process PID as part of the -K
1630 filename. This should rule out race conditions when creating
1633 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1634 processing considerably. Previous code took too long for large mails,
1635 triggering a timeout which in turn triggers #401.
1637 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1638 in the DK code in transports.c. sendfile() is not really portable,
1639 hence the _LINUX specificness.
1641 TF/01 In the add_headers option to the mail command in an Exim filter,
1642 there was a bug that Exim would claim a syntax error in any
1643 header after the first one which had an odd number of characters
1646 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1647 callout verification, Exim cached a "reject" for the entire domain. This
1648 is correct for most verifications, but it is not correct for a recipient
1649 verification with use_sender or use_postmaster set, because in that case
1650 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1651 case of MAIL FROM:<> rejection from other early rejections (e.g.
1652 rejection of HELO). When verifying a recipient using a non-null MAIL
1653 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1654 Whatever the result of the callout, the value of the domain cache is
1655 left unchanged (for any other kind of callout, getting as far as trying
1656 RCPT means that the domain itself is ok).
1658 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1661 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1662 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1663 session, the daemon ignores ECONNECT errors and logs others; it now
1664 ignores EPIPE as well.
1666 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1667 (quoted-printable decoding).
1669 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1670 later the small subsequent patch to fix an introduced bug.
1672 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1674 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1676 PH/08 An error is now given if message_size_limit is specified negative.
1678 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1679 to be given (somewhat) arbitrary names.
1681 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1684 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1685 miscellaneous code fixes
1687 PH/10 Added the log_reject_target ACL modifier to specify where to log
1690 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1691 hostname. This is wrong, because it relates to the incoming message (and
1692 probably the interface on which it is arriving) and not to the outgoing
1693 callout (which could be using a different interface). This has been
1694 changed to use the value of the helo_data option from the smtp transport
1695 instead - this is what is used when a message is actually being sent. If
1696 there is no remote transport (possible with a router that sets up host
1697 addresses), $smtp_active_hostname is used.
1699 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1700 tweaks were necessary in order to get it to work (see also 21 below):
1701 (a) The code assumed that strncpy() returns a negative number on buffer
1702 overflow, which isn't the case. Replaced with Exim's string_format()
1704 (b) There were several signed/unsigned issues. I just did the minimum
1705 hacking in of casts. There is scope for a larger refactoring.
1706 (c) The code used strcasecmp() which is not a standard C function.
1707 Replaced with Exim's strcmpic() function.
1708 (d) The code set only $1; it now sets $auth1 as well.
1709 (e) A simple test gave the error "authentication client didn't specify
1710 service in request". It would seem that Dovecot has changed its
1711 interface. Fortunately there's a specification; I followed it and
1712 changed what the client sends and it appears to be working now.
1714 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1717 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1718 address A is aliased to B and C, where B exists and C does not. Without
1719 -v the output is "A verified" because verification stops after a
1720 successful redirection if more than one address is generated. However,
1721 with -v the child addresses are also verified. Exim was outputting "A
1722 failed to verify" and then showing the successful verification for C,
1723 with its parentage. It now outputs "B failed to verify", showing B's
1724 parentage before showing the successful verification of C.
1726 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1727 look up a TXT record in a specific list after matching in a combined
1730 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1731 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1732 they consult the DNS. I had assumed they would set it the way they
1733 wanted; and indeed my experiments on Linux seem to show that in some
1734 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1735 To be on the safe side, however, I have now made the interface to
1736 host_find_byname() similar to host_find_bydns(), with an argument
1737 containing the DNS resolver options. The host_find_byname() function now
1738 sets these options at its start, just as host_find_bydns() does. The smtp
1739 transport options dns_qualify_single and dns_search_parents are passed to
1740 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1741 of host_find_byname() use the default settings of RES_DEFNAMES
1742 (qualify_single) but not RES_DNSRCH (search_parents).
1744 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1745 spool_read_header() do less string testing, by means of a preliminary
1746 switch on the second character of optional "-foo" lines. (This is
1747 overdue, caused by the large number of possibilities that now exist.
1748 Originally there were few.) While I was there, I also converted the
1749 str(n)cmp tests so they don't re-test the leading "-" and the first
1750 character, in the hope this might squeeze out yet more improvement.
1752 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1753 flag allowing group syntax was set by the header_syntax check but not
1754 turned off, possible causing trouble later; (2) The flag was not being
1755 set at all for the header_verify test, causing "group"-style headers to
1756 be rejected. I have now set it in this case, and also caused header_
1757 verify to ignore an empty address taken from a group. While doing this, I
1758 came across some other cases where the code for allowing group syntax
1759 while scanning a header line wasn't quite right (mostly, not resetting
1760 the flag correctly in the right place). These bugs could have caused
1761 trouble for malformed header lines. I hope it is now all correct.
1763 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1764 with the "reply" argument non-NULL. The code, however (which originally
1765 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1766 but it didn't always do it. This confused somebody who was copying the
1767 code for some other use. I have removed all the tests.
1769 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1770 feature that was used to support insecure browsers during the U.S. crypto
1771 embargo. It requires special client support, and Exim is probably the
1772 only MTA that supported it -- and would never use it because real RSA is
1773 always available. This code has been removed, because it had the bad
1774 effect of slowing Exim down by computing (never used) parameters for the
1775 RSA_EXPORT functionality.
1777 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1778 authenticator to fail if there's a tab character in the incoming data
1779 (there should never be unless someone is messing about, as it's supposed
1780 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1781 if the connection is using TLS or if the remote IP is the same as the
1782 local IP, and the "valid-client-cert option" if a client certificate has
1785 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1786 authenticators. This can be used for authorization after authentication
1787 succeeds. (In the case of plaintext, it servers for both authentication
1790 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1791 if any retry times were supplied.
1793 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1794 connection, where there is no client IP address to check. In this
1795 situation, the verify now always succeeds.
1797 PH/25 Applied John Jetmore's -Mset patch.
1799 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1801 PH/27 In a string expansion for a processed (not raw) header when multiple
1802 headers of the same name were present, leading whitespace was being
1803 removed from all of them, but trailing whitespace was being removed only
1804 from the last one. Now trailing whitespace is removed from each header
1805 before concatenation. Completely empty headers in a concatenation (as
1806 before) are ignored.
1808 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
1809 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
1811 PH/29 [Removed. This was a change that I later backed out, and forgot to
1812 correct the ChangeLog entry (that I had efficiently created) before
1813 committing the later change.]
1815 PH/30 Exim was sometimes attempting to deliver messages that had suffered
1816 address errors (4xx response to RCPT) over the same connection as other
1817 messages routed to the same hosts. Such deliveries are always "forced",
1818 so retry times are not inspected. This resulted in far too many retries
1819 for the affected addresses. The effect occurred only when there were more
1820 hosts than the hosts_max_try setting in the smtp transport when it had
1821 the 4xx errors. Those hosts that it had tried were not added to the list
1822 of hosts for which the message was waiting, so if all were tried, there
1823 was no problem. Two fixes have been applied:
1825 (i) If there are any address or message errors in an SMTP delivery, none
1826 of the hosts (tried or untried) are now added to the list of hosts
1827 for which the message is waiting, so the message should not be a
1828 candidate for sending over the same connection that was used for a
1829 successful delivery of some other message. This seems entirely
1830 reasonable: after all the message is NOT "waiting for some host".
1831 This is so "obvious" that I'm not sure why it wasn't done
1832 previously. Hope I haven't missed anything, but it can't do any
1833 harm, as the worst effect is to miss an optimization.
1835 (ii) If, despite (i), such a delivery is accidentally attempted, the
1836 routing retry time is respected, so at least it doesn't keep
1837 hammering the server.
1839 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
1840 in ${readsocket because some servers need this prod.
1842 PH/32 Added some extra debug output when updating a wait-xxx database.
1844 PH/33 The hint "could be header name not terminated by colon", which has been
1845 given for certain expansion errors for a long time, was not being given
1846 for the ${if def:h_colon_omitted{... case.
1848 PH/34 The spec says: "With one important exception, whenever a domain list is
1849 being scanned, $domain contains the subject domain." There was at least
1850 one case where this was not true.
1852 PH/35 The error "getsockname() failed: connection reset by peer" was being
1853 written to the panic log as well as the main log, but it isn't really
1854 panic-worthy as it just means the connection died rather early on. I have
1855 removed the panic log writing for the ECONNRESET error when getsockname()
1858 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
1859 runs only) independently of the message's sender address. This meant
1860 that, if the 4xx error was in fact related to the sender, a different
1861 message to the same recipient with a different sender could confuse
1862 things. In particualar, this can happen when sending to a greylisting
1863 server, but other circumstances could also provoke similar problems.
1864 I have changed the default so that the retry time for these errors is now
1865 based a combination of the sender and recipient addresses. This change
1866 can be overridden by setting address_retry_include_sender=false in the
1869 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
1870 remote server are returned as part of bounce messages. This was not
1871 happening for LMTP over a pipe (the lmtp transport), but now it is the
1872 same for both kinds of LMTP.
1874 PH/38 Despite being documented as not happening, Exim was rewriting addresses
1875 in header lines that were in fact CNAMEs. This is no longer the case.
1877 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
1878 and queue runs started by the daemon processed all messages. This has
1879 been fixed so that -R and -S can now usefully be given with -q<time>.
1881 PH/40 Import PCRE release 6.7 (fixes some bugs).
1883 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
1885 PH/42 Give an error if -q is specified more than once.
1887 PH/43 Renamed the variables $interface_address and $interface_port as
1888 $received_ip_address and $received_port, to make it clear that these
1889 values apply to message reception, and not to the outgoing interface when
1890 a message is delivered. (The old names remain recognized, of course.)
1892 PH/44 There was no timeout on the connect() call when using a Unix domain
1893 socket in the ${readsocket expansion. There now is.
1895 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
1896 be meaningful with "accept".
1898 SC/01 Eximstats V1.43
1899 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
1901 SC/02 Eximstats V1.44
1902 Use a glob alias rather than an array ref in the generated
1903 parser. This improves both readability and performance.
1905 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
1906 Collect SpamAssassin and rejection statistics.
1907 Don't display local sender or destination tables unless
1908 there is data to show.
1909 Added average volumes into the top table text output.
1911 SC/04 Eximstats V1.46
1912 Collect data on the number of addresses (recipients)
1913 as well as the number of messages.
1915 SC/05 Eximstats V1.47
1916 Added 'Message too big' to the list of mail rejection
1917 reasons (thanks to Marco Gaiarin).
1919 SC/06 Eximstats V1.48
1920 Mainlog lines which have GMT offsets and are too short to
1921 have a flag are now skipped.
1923 SC/07 Eximstats V1.49 (Alain Williams)
1924 Added the -emptyok flag.
1926 SC/08 Eximstats V1.50
1927 Fixes for obtaining the IP address from reject messages.
1929 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
1930 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
1931 whitesspace changes from 4.64-PH/27
1933 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
1936 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
1937 are found, allow negative numbers in numeric criteria)
1939 JJ/06 exipick.20061117.2, added new $message_body_missing variable
1941 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
1942 to match changes made in 4.64-PH/43
1944 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
1946 PH/47 Put in an explicit test for a DNS lookup of an address record where the
1947 "domain" is actually an IP address, and force a failure. This locks out
1948 those revolvers/nameservers that support "A-for-A" lookups, in
1949 contravention of the specifications.
1951 PH/48 When a host name was looked up from an IP address, and the subsequent
1952 forward lookup of the name timed out, the host name was left in
1953 $sender_host_name, contrary to the specification.
1955 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
1956 restricted to single-key lookups, Exim was not diagnosing an error if
1957 * or *@ was used with a query-style lookup.
1959 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
1961 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
1962 long ago, but noone interested enough thought of it. Let's just say that
1963 the "1.1" means that there are some new functions that weren't there at
1964 some point in the past.
1966 PH/51 Error processing for expansion failure of helo_data from an smtp
1967 transport during callout processing was broken.
1969 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
1970 tested/used via the -bh/-bhc/-bs options.
1972 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
1973 bug, fixed in subsequent PCRE releases).
1975 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
1976 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
1978 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
1984 SC/01 Use a glob alias rather than an array ref in eximstats generated
1985 parser. This improves both readability and performance.
1987 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
1988 Don't display local sender or destination tables in eximstats unless
1989 there is data to show.
1990 Added average volumes into the eximstats top table text output.
1992 SC/03 Collect data on the number of addresses (recipients) as well
1993 as the number of messages in eximstats.
1995 TF/01 Correct an error in the documentation for the redirect router. Exim
1996 does (usually) call initgroups() when daemonizing.
1998 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
1999 with consistent privilege compared to when running as a daemon.
2001 TF/03 Note in the spec that $authenticated_id is not set for local
2002 submissions from trusted users.
2004 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2005 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2007 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2008 by adding some example configuration directives to the default
2009 configuration file. A little bit of work is required to uncomment the
2010 directives and define how usernames and passwords are checked, but
2011 there is now a framework to start from.
2013 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2014 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2015 without this. I don't know how relevant this is to other LDAP libraries.
2017 PH/02 Add the verb name to the "unknown ACL verb" error.
2019 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2021 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2023 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2024 directory not expanded when it should be if an expanded home directory
2025 was set for the address (which is overridden by the transport).
2027 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2030 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2031 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2032 because it is too late at that time, and has no effect.
2034 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2035 security issue with \' (bugzilla #107). I could not use the
2036 PQescapeStringConn() function, because it needs a PGconn value as one of
2039 PH/08 When testing addresses using -bt, indicate those final addresses that
2040 are duplicates that would not cause an additional delivery. At least one
2041 person was confused, thinking that -bt output corresponded to deliveries.
2042 (Suppressing duplicates isn't a good idea as you lose the information
2043 about possibly different redirections that led to the duplicates.)
2045 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2046 systems where poll() doesn't work, in particular OS X.
2048 PH/10 Added more information to debugging output for retry time not reached.
2050 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2051 operations in malware.c.
2053 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2056 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2057 syslog_duplication set false, log lines that would normally be written
2058 both the the main log and to the reject log were not written to syslog at
2061 PH/14 In the default configuration, change the use of "message" in ACL warn
2062 statements to "add_header".
2064 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2065 not followed by a command (e.g. "seen endif").
2067 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2068 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2071 PH/17 Added extra conditions to the default value of delay_warning_condition
2075 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2076 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2077 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2080 The Auto-Submitted: and various List- headers are standardised, whereas I
2081 don't think Precedence: ever was.
2083 PH/18 Refactored debugging code in route_finduser() to show more information,
2084 in particular, the error code if getpwnam() issues one.
2086 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2087 This is apparently needed in addition to the PH/07 change above to avoid
2088 any possible encoding problems.
2090 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2091 but not after initializing Perl.
2093 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2094 output them only if debugging. By default they are written stderr,
2095 apparently, which is not desirable.
2097 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2100 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2103 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2105 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2106 authenticated or an ident call has been made. Suppress the default
2107 values for $authenticated_id and $authenticated_sender (but permit -oMai
2108 and -oMas) when testing with -bh.
2110 PH/24 Re-jigged the order of the tests in the default configuration so that the
2111 tests for valid domains and recipients precede the DNS black list and CSA
2112 tests, on the grounds that those ones are more expensive.
2114 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2115 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2116 This bug exists in every version of Exim that I still have, right back to
2119 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2120 However, an attempt to turn on case-sensitivity in a regex key by
2121 including (?-i) didn't work because the subject string was already
2122 lowercased, and the effects were non-intuitive. It turns out that a
2123 one-line patch can be used to allow (?-i) to work as expected.
2129 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2130 other effects) broke the use of negated acl sub-conditions.
2132 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2135 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2136 "Deny" causes Exim to reject the incoming connection with a 554 error.
2137 Unfortunately, if there is a major crisis, such as a disk failure,
2138 tcp-wrappers gives "deny", whereas what one would like would be some
2139 kind of temporary error. A kludge has been added to help with this.
2140 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2141 554 error is used if errno is still zero or contains ENOENT (which occurs
2142 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2145 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2147 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2148 errors. Otherwise a message that provokes a temporary error (when other
2149 messages do not) can cause a whole host to time out.
2151 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2152 addresses were routed directly to files or pipes from a redirect router.
2153 File deliveries just didn't batch; pipe deliveries might have suffered
2156 PH/06 A failure to get a lock for a hints database would erroneously always say
2157 "Failed to get write lock", even when it was really a read lock.
2159 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2160 of 0600. This has been changed to use the value of the lockfile_mode
2161 option (which defaults to 0600).
2163 PH/08 Applied small patch from the Sieve maintainer.
2165 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2166 folder from quota calculations, a direct delivery into this folder messed
2167 up the contents of the maildirsize file. This was because the regex was
2168 used only to exclude .Trash (or whatever) when the size of the mailbox
2169 was calculated. There was no check that a delivery was happening into an
2170 excluded directory. This bug has been fixed by ignoring all quota
2171 processing for deliveries into excluded directories.
2173 PH/10 Added the maildirfolder_create_regex option to appendfile.
2179 PH/01 The code for finding all the local interface addresses on a FreeBSD
2180 system running IPv6 was broken. This may well have applied to all BSD
2181 systems, as well as to others that have similar system calls. The broken
2182 code found IPv4 interfaces correctly, but gave incorrect values for the
2183 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2184 that it would not match correctly against @[] and not recognize the IPv6
2187 PH/02 The ipliteral router was not recognizing addresses of the form user@
2188 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2190 PH/03 Added disable_ipv6.
2192 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2193 decoded form, because it is most often used to construct To: headers
2194 lines in autoreplies, and the decoded form may well be syntactically
2195 invalid. However, $reply_address has leading white space removed, and all
2196 newlines turned into spaces so that the autoreply transport does not
2199 PH/05 If group was specified without a user on a router, and no group or user
2200 was specified on a transport, the group from the router was ignored.
2202 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2203 for visible compile-time settings that can be used to change these
2204 numbers, for those that want even more. Backwards compatibility with old
2205 spool files has been maintained. However, going back to a previous Exim
2206 release will lost any variables that are in spool files.
2208 PH/07 Two small changes when running in the test harness: increase delay when
2209 passing a TCP/IP connection to a new process, in case the original
2210 process has to generate a bounce, and remove special handling of
2211 127.0.0.2 (sic), which is no longer necessary.
2213 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2214 be the same on different OS.
2216 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2219 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2220 whether --show-vars was specified or not
2222 JJ/02 exipick: Added support for new ACL variable spool format introduced
2225 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2226 syntactically invalid From: or Reply-to: line, and a filter used this to
2227 generate an autoreply, and therefore failed to obtain an address for the
2228 autoreply, Exim could try to deliver to a non-existent relative file
2229 name, causing unrelated and misleading errors. What now happens is that
2230 it logs this as a hard delivery error, but does not attempt to create a
2233 PH/11 The exinext utility has a -C option for testing purposes, but although
2234 the given file was scanned by exinext itself; it wasn't being passed on
2235 when Exim was called.
2237 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2238 an end-of-file indication when reading a command response.
2240 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2241 compiled. In many other places in Exim, IPv6 addresses are always
2242 recognized, so I have changed this. It also means that IPv4 domain
2243 literals of the form [IPV4:n.n.n.n] are now always recognized.
2245 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2246 used if the router is not running as root, for example, when verifying at
2247 ACL time, or when using -bh. The debugging output from this situation was
2248 non-existent - all you got was a failure to exec. I have made two
2251 (a) Failures to set uid/gid, the current directory, or a process leader
2252 in a subprocess such as that created by queryprogram now generate
2253 suitable debugging ouput when -d is set.
2255 (b) The queryprogram router detects when it is not running as root,
2256 outputs suitable debugging information if -d is set, and then runs
2257 the subprocess without attempting to change uid/gid.
2259 PH/15 Minor change to Makefile for building test_host (undocumented testing
2262 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2263 additional section of a DNS packet that returns MX or SRV records.
2264 Instead, it always explicitly searches for A/AAAA records. This avoids
2265 major problems that occur when a DNS server includes only records of one
2266 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2267 fixed another bug: if SRV records were looked up and the corresponding
2268 address records were *not* found in the additional section, the port
2269 values from the SRV records were lost.
2271 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2272 using the correct key (the original address) when searching the retry
2273 rules in order to find which one to use for generating the retry hint.
2275 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2276 adding the default one. Similarly, if it contains a Reply-To: header, the
2277 errors_reply_to option, if set, is not used.
2279 PH/19 When calculating a retry time, Exim used to measure the "time since
2280 failure" by looking at the "first failed" field in the retry record. Now
2281 it does not use this if it is later than than the arrival time of the
2282 message. Instead it uses the arrival time. This makes for better
2283 behaviour in cases where some deliveries succeed, thus re-setting the
2284 "first failed" field. An example is a quota failure for a huge message
2285 when small messages continue to be delivered. Without this change, the
2286 "time since failure" will always be short, possible causing more frequent
2287 delivery attempts for the huge message than are intended.
2288 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2290 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2291 $1, $2, $3) because the numerical variables can be reset during some
2292 expansion items (e.g. "match"), thereby losing the authentication data.
2294 PH/21 Make -bV show the size of off_t variables so that the test suite can
2295 decide whether to run tests for quotas > 2G.
2297 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2298 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2299 filecount value is greater than 2G or if a quota value is greater than 2G
2300 on a system where the size of off_t is not greater than 4, a panic error
2303 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2304 never match. The debug and -bh output now contains an explicit error
2305 message indicating a malformed IPv4 address or mask.
2307 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2308 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2309 PH/23 above applies.
2311 PH/25 Do not write to syslog when running in the test harness. The only
2312 occasion when this arises is a failure to open the main or panic logs
2313 (for which there is an explicit test).
2315 PH/26 Added the /no_tell option to "control=freeze".
2317 PH/27 If a host name lookup failed very early in a connection, for example, if
2318 the IP address matched host_lookup and the reverse lookup yielded a name
2319 that did not have a forward lookup, an error message of the form "no IP
2320 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2321 could be logged. Now it outputs the IP address instead of "NULL".
2323 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2324 allows the sender and the authenticated sender to be set when
2325 submitting a message from within Exim. Since child_open_exim() is
2326 documented for local_scan(), the new function should be too.
2328 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2329 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2330 results in an empty string is now treated as unset.
2332 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2334 PH/31 Added sender_verify_fail logging option.
2336 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2337 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2338 tidied the source and removed it altogether.
2340 PH/33 When a queue run was abandoned because the load average was too high, a
2341 log line was always written; now it is written only if the queue_run log
2342 selector is set. In addition, the log line for abandonment now contains
2343 information about the queue run such as the pid. This is always present
2344 in "start" and "stop" lines but was omitted from the "abandon" line.
2346 PH/34 Omit spaces between a header name and the colon in the error message that
2347 is given when verify = headers_syntax fails (if there are lots of them,
2348 the message gets confusing).
2350 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2351 names, as there are now some PTR records that contain slashes. This check
2352 is only to protect against broken name servers that fall over on strange
2353 characters, so the fact that it applies to all lookups doesn't matter.
2355 PH/36 Now that the new test suite is complete, we can remove some of the
2356 special code in Exim that was needed for the old test suite. For example,
2357 sorting DNS records because real resolvers return them in an arbitrary
2358 order. The new test suite's fake resolver always returns records in the
2361 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2362 bounces) except when queue_only is set, to avoid logging races between
2363 the different processes.
2365 PH/38 Panic-die if .include specifies a non-absolute path.
2367 PH/39 A tweak to the "H" retry rule from its user.
2369 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2370 a label. They prevented compilation on older perls.
2372 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2373 a warning to be raised on newish perls.
2375 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2376 on queue. Changes to match documented behaviour of showing count of
2377 messages matching specified criteria.
2379 PH/40 Changed the default ident timeout from 30s to 5s.
2381 PH/41 Added support for the use of login_cap features, on those BSD systems
2382 that have them, for controlling the resources used by pipe deliveries.
2384 PH/42 The content-scanning code uses fopen() to create files in which to put
2385 message data. Previously it was not paying any attention to the mode of
2386 the files. Exim runs with umask(0) because the rest of the code creates
2387 files with open(), and sets the required mode explicitly. Thus, these
2388 files were ending up world-writeable. This was not a big issue, because,
2389 being within the spool directory, they were not world-accessible. I have
2390 created a function called modefopen, which takes an additional mode
2391 argument. It sets umask(777), creates the file, chmods it to the required
2392 mode, then resets the umask. All the relevant calls to fopen() in the
2393 content scanning code have been changed to use this function.
2395 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2396 to 24 hours. This avoids potential overflow problems when processing G
2397 and H retry rules. I suspect nobody ever tinkers with this value.
2399 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2401 PH/45 When the plaintext authenticator is running as a client, the server's
2402 challenges are checked to ensure they are valid base64 strings. By
2403 default, the authentication attempt is cancelled if an invalid string is
2404 received. Setting client_ignore_invalid_base64 true ignores these errors.
2405 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2406 they are received. Thus, the responses can be made to depend on the
2407 challenges. If an invalid string is ignored, an empty string is placed in
2410 PH/46 Messages that are created by the autoreply transport now contains a
2411 References: header, in accordance with RFCs 2822 and 3834.
2413 PH/47 Added authenticated_sender_force to the smtp transport.
2415 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2417 PH/49 Installed latest patch from the Sieve maintainer.
2419 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2420 was also set, the appendfile transport was unnecessarily scanning a
2421 directory of message files (e.g. for maildir delivery) to find the count
2422 of files (along with the size), even though it did not need this
2423 information. It now does the scan only if it needs to find either the
2424 size of the count of files.
2426 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2428 PH/52 Two bugs concerned with error handling when the smtp transport is
2431 (i) Exim was not creating retry information for temporary errors given
2432 for individual recipients after the DATA command when the smtp transport
2433 was used in LMTP mode. This meant that they could be retried too
2434 frequently, and not timed out correctly.
2436 (ii) Exim was setting the flag that allows error details to be returned
2437 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2438 recipients that were returned after the DATA command.
2440 PH/53 This is related to PH/52, but is more general: for any failing address,
2441 when detailed error information was permitted to be returned to the
2442 sender, but the error was temporary, then after the final timeout, only
2443 "retry timeout exceeded" was returned. Now it returns the full error as
2444 well as "retry timeout exceeded".
2446 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2447 do this, and (what is worse) MTAs that accept it.
2449 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2450 will now be deprecated.
2452 PH/56 New os.c-cygwin from the Cygwin maintainer.
2454 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2455 formats (previously only available in exim formats via -bpr, -bpru,
2456 and -bpra. Now also available in native and exiqgrep formats)
2458 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2459 with very large, slow to parse queues
2461 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2463 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2465 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2466 responses to authentication challenges, though it was showing the
2467 challenges; (ii) I've removed the CR characters from the debug output for
2470 PH/58 Allow for the insertion of a newline as well as a space when a string
2471 is turned into more than one encoded-word during RFC 2047 encoding. The
2472 Sieve code now uses this.
2474 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2475 data_4xx, lost_connection, tls_required.
2477 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2478 message was being sent as an SMTP response.
2480 PH/61 Add -l and -k options to exicyclog.
2482 PH/62 When verifying, if an address was redirected to one new address, so that
2483 verification continued, and the new address failed or deferred after
2484 having set something in $address_data, the value of $address_data was not
2485 passed back to the ACL. This was different to the case when no
2486 redirection occurred. The value is now passed back in both cases.
2488 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2489 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2490 use login_cap.h, so on its own it isn't the distinguishing feature. The
2491 new name refers directly to the setclassresources() function.
2493 PH/65 Added configuration files for NetBSD3.
2495 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2497 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2498 is preferred over IPv4.
2500 PH/68 The bounce_return_message and bounce_return_body options were not being
2501 honoured for bounces generated during the reception of non-SMTP messages.
2502 In particular, this applied to messages rejected by the ACL. This bug has
2503 been fixed. However, if bounce_return_message is true and bounce_return_
2504 body is false, the headers that are returned for a non-SMTP message
2505 include only those that have been read before the error was detected.
2506 (In the case of an ACL rejection, they have all been read.)
2508 PH/69 The HTML version of the specification is now built in a directory called
2509 spec_html instead of spec.html, because the latter looks like a path with
2510 a MIME-type, and this confuses some software.
2512 PH/70 Catch two compiler warnings in sieve.c.
2514 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2515 function verify_get_ident() calls ip_connect() to connect a socket, but
2516 if the "connect()" function timed out, ip_connect() used to close the
2517 socket. However, verify_get_ident() also closes the socket later, and in
2518 between Exim writes to the log, which may get opened at this point. When
2519 the socket was closed in ip_connect(), the log could get the same file
2520 descriptor number as the socket. This naturally causes chaos. The fix is
2521 not to close the socket in ip_connect(); the socket should be closed by
2522 the function that creates it. There was only one place in the code where
2523 this was missing, in the iplookup router, which I don't think anybody now
2524 uses, but I've fixed it anyway.
2526 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2527 well as to direct DNS lookups. Otherwise the handling of names in host
2528 lists is inconsistent and therefore confusing.
2534 PH/01 Two changes to the default runtime configuration:
2536 (1) Move the checks for relay_from_hosts and authenticated clients from
2537 after to before the (commented out) DNS black list checks.
2539 (2) Add control=submission to the relay_from_hosts and authenticated
2540 clients checks, on the grounds that messages accepted by these
2541 statements are most likely to be submissions.
2543 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2545 (1) Generate an error if the third argument for the ${prvs expansion is
2548 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2551 (3) Reset the variables that are obtained from the first argument of
2552 ${prvscheck and used in the second argument before leaving the code,
2553 because their memory is reclaimed, so using them afterwards may do
2556 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2557 one (it's much easier than Tom thought :-).
2559 (5) Because of (4), we can now allow for the use of $prvscheck_result
2560 inside the third argument.
2562 PH/03 For some reason, the default setting of PATH when running a command from
2563 a pipe transport was just "/usr/bin". I have changed it to
2566 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2567 anything to be listed in the output from -bV.
2569 PH/05 When a filter generated an autoreply, the entire To: header line was
2570 quoted in the delivery log line, like this:
2572 => >A.N.Other <ano@some.domain> <original@ddress> ...
2574 This has been changed so that it extracts the operative address. There
2575 may be more than one such address. If so, they are comma-separated, like
2578 => >ano@some.domain,ona@other.domain <original@ddress> ...
2580 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2581 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2582 not being looked up in the rDNS to get a host name, Exim was showing the
2583 IP address twice in Received: lines, even though the IP addresses were
2584 identical. For example:
2586 Received: from [1.2.3.4] (helo=[1.2.3.4])
2588 However, if the real host name was known, it was omitting the HELO data
2589 if it matched the actual IP address. This has been tidied up so that it
2590 doesn't show the same IP address twice.
2592 PH/07 When both +timestamp and +memory debugging was on, the value given by
2593 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2594 called by the debug printing, thereby overwriting the timestamp buffer.
2595 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2597 PH/08 When the original message was included in an autoreply transport, it
2598 always said "this is a copy of the message, including all the headers",
2599 even if body_only or headers_only was set. It now gives an appropriate
2602 PH/09 Applied a patch from the Sieve maintainer which:
2604 o fixes some comments
2605 o adds the (disabled) notify extension core
2606 o adds some debug output for the result of if/elsif tests
2607 o points to the current vacation draft in the documentation
2608 and documents the missing references header update
2612 o fixes a bug in processing the envelope test (when testing
2613 multiple envelope elements, the last element determinted the
2616 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2617 Electronic Mail") by including:
2619 Auto-submitted: auto-generated
2621 in the messages that it generates (bounce messages and others, such as
2622 warnings). In the case of bounce messages for non-SMTP mesages, there was
2623 also a typo: it was using "Auto_submitted" (underscore instead of
2624 hyphen). Since every message generated by Exim is necessarily in response
2625 to another message, thes have all been changed to:
2627 Auto-Submitted: auto-replied
2629 in accordance with these statements in the RFC:
2631 The auto-replied keyword:
2633 - SHOULD be used on messages sent in direct response to another
2634 message by an automatic process,
2636 - MUST NOT be used on manually-generated messages,
2638 - MAY be used on Delivery Status Notifications (DSNs) and Message
2639 Disposition Notifications (MDNs),
2641 - MUST NOT be used on messages generated by automatic or periodic
2642 processes, except for messages which are automatic responses to
2645 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2646 to the default Received: header definition.
2648 PH/12 Added log selector acl_warn_skipped (default on).
2650 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2651 variables because (a) they are in the wrong storage pool and (b) even if
2652 they were copied, it wouldn't work properly because of the caching.
2654 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2655 checking when decoding. Apparently there are clients that generate
2656 overlong encoded strings. Why am I not surprised?
2658 PH/15 If the first argument of "${if match_address" was not empty, but did not
2659 contain an "@" character, Exim crashed. Now it writes a panic log message
2660 and treats the condition as false.
2662 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2664 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2665 extension "envelope-auth". The code is finished and in agreement with
2666 other implementations, but there is no documentation so far and in fact,
2667 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2668 not changing the active code.
2670 Print executed "if" and "elsif" statements when debugging is used. This
2671 helps a great deal to understand what a filter does.
2673 Document more things not specified clearly in RFC3028. I had all this
2674 sorted out, when out of a sudden new issues came to my mind. Oops."
2676 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2679 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2680 canonical form (as documented). However, after a host name lookup from
2681 the IP address, check_host() was doing a simple string comparison with
2682 addresses acquired from the DNS when checking that the found name did
2683 have the original IP as one of its addresses. Since any found IPv6
2684 addresses are likely to be in abbreviated form, the comparison could
2685 fail. Luckily, there already exists a function for doing the comparison
2686 by converting both addresses to binary, so now that is used instead of
2687 the text comparison.
2689 PH/20 There was another similar case to PH/19, when a complete host name was
2690 given in a host list; looking up its IP address could give an abbreviated
2691 form, whereas the current host's name might or might not be abbreviated.
2692 The same fix has been applied.
2698 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2699 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2702 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2703 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2705 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2707 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2708 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2709 Also, for "Auto-Submitted", treat anything other than "no" as
2710 non-personal, in accordance with RFC 3834. (Previously it treated
2711 anything starting "auto-" as non-personal.)
2713 TF/01 The control=submission/name=... option had a problem with syntax
2714 errors if the name included a slash character. The /name= option
2715 now slurps the rest of the string, so it can include any characters
2716 but it must come last in the list of options (after /sender_retain
2719 PH/05 Some modifications to the interface to the fake nameserver for the new
2727 TK/01 Added the "success_on_redirect" address verification option. See
2728 NewStuff for rationale and an example.
2730 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2732 PH/02 Patch to exigrep to allow it to work on syslog lines.
2734 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2735 fread() to skip over the body file's header line, because in Cygwin the
2736 header line is locked and is inaccessible.
2738 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2739 co-exist for some time) to make it clear that it is the Exim ID that is
2740 referenced, not the Message-ID: header line.
2742 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2743 string_format() function, because snprintf() does not exist on all
2746 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2747 ${stat: expansion item.
2749 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2750 protocol synchronization error", to keep the pedants happy.
2752 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2753 well as for IRIX systems, when gcc is being used. See the host.c source
2756 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2758 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2761 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2762 transport and to the smtp transport in LMTP mode.
2764 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2766 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2767 run a filter in a subprocess. This could lead to confusion in subsequent
2768 lookups in the parent process. There should also be a search_tidyup() at
2769 the end of the subprocess.
2771 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2772 only if the host matched helo_try_verify_hosts, which caused the
2773 verification to occur when the EHLO/HELO command was issued. The ACL just
2774 tested the remembered result. Now, if a previous verification attempt has
2775 not happened, "verify = helo" does it there and then.
2777 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2779 TK/03 Fix log output including CR from clamd.
2781 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2782 exist provoked a memory error which could cause a segfault.
2784 PH/15 Installed PCRE 6.2
2786 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2788 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2789 of the problem. Specifically, suggested +O2 rather than +O1 for the
2792 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2794 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2795 record, the port was not correctly logged when the outgoing_port log
2796 selector was set (it logged the transort's default port).
2798 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2799 fallback_hosts, and "hosts" in the smtp transport.
2801 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2802 host errors such as "Connection refused".
2804 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2805 authentication with radiusclient 0.4.9:
2807 - Error returned from rc_read_config was caught wrongly
2808 - Username/password not passed on to radius server due to wrong length.
2810 The presumption is that some radiusclient API changes for 4.51/PH/17
2811 were not taken care of correctly. The code is still untested by me (my
2812 Linux distribution still has 0.3.2 of radiusclient), but it was
2813 contributed by a Radius user.
2815 PH/24 When doing a callout, the value of $domain wasn't set correctly when
2816 expanding the "port" option of the smtp transport.
2818 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
2819 while reading a MIME header. Thanks to Tom Hughes for a patch.
2821 PH/24 Include config.h inside local_scan.h so that configuration settings are
2824 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
2825 that in an ACL for RCPT (for example), you can examine exactly what was
2828 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
2829 commands, but it was not correctly comparing the address with the actual
2830 client host address. Thus, it would show the EHLO address in Received:
2831 header lines when this was not necessary.
2833 PH/27 Added the % operator to ${eval:}.
2835 PH/28 Exim tries to create and chdir to its spool directory when it starts;
2836 it should be ignoring failures (because with -C, for example, it has lost
2837 privilege). It wasn't ignoring creation failures other than "already
2840 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
2843 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
2844 because an input line was too long, either on its own, or by virtue of
2845 too many continuations, the temporary file was not being removed, and the
2846 return code was incorrect.
2848 PH/31 Missing "BOOL" in function definition in filtertest.c.
2850 PH/32 Applied Sieve patches from the maintainer.
2852 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
2854 PH/33 Added "verify = not_blind".
2856 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
2857 Local/Makefile (with some defaults set). These are used in built scripts
2858 such as exicyclog, but they have never been used in the exim_install
2859 script (though there are many overriding facilities there). I have
2860 arranged that the exim_install script now takes note of these two
2863 PH/35 Installed configuration files for Dragonfly.
2865 PH/36 When a locally submitted message by a trusted user did not contain a
2866 From: header, and the sender address was obtained from -f or from an SMTP
2867 MAIL command, and the trusted user did not use -F to supply a sender
2868 name, $originator_name was incorrectly used when constructing a From:
2869 header. Furthermore, $originator_name was used for submission mode
2870 messages from external hosts without From: headers in a similar way,
2871 which is clearly wrong.
2873 PH/37 Added control=suppress_local_fixups.
2875 PH/38 When log_selector = +received_sender was set, and the addition of the
2876 sender made the log line's construction buffer exactly full, or one byte
2877 less than full, an overflow happened when the terminating "\n" was
2880 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
2881 when the result of a list match is failure because a DNS lookup failed.
2883 PH/40 RM_COMMAND is now used in the building process.
2885 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
2886 the "build-* directories that it finds.
2888 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
2889 address in a domain literal was a prefix of an interface address.
2891 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
2892 when verifying a sender address, unless rewrite_headers is false.
2894 PH/44 Wrote a long comment about why errors_to addresses are verified as
2895 recipients, not senders.
2897 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
2898 the ratelimit ACL was added.
2900 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
2902 PH/46 Added extra information about PostgreSQL errors to the error string.
2904 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
2905 avoiding the need to install special zones in a real server. This is
2906 backwards compatible; if it can't find the fake resolver, it drops back.
2907 Thus, both old and new test suites can be run.
2909 TF/02 Added util/ratelimit.pl
2911 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
2912 clock is set back in time.
2914 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
2915 Candler <B.Candler@pobox.com>.
2917 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
2918 OK for addresses that are the result of redirections.
2920 PH/48 A number of further additions for the benefit of the new test suite,
2921 including a fake gethostbyname() that interfaces to the fake DNS resolver
2924 TF/06 The fix for widen_domains has also been applied to qualify_single and
2925 search_parents which are the other dnslookup options that can cause
2928 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
2931 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
2933 TF/07 Exim produced the error message "an SRV record indicated no SMTP
2934 service" if it encountered an MX record with an empty target hostname.
2935 The message is now "an MX or SRV record indicated no SMTP service".
2937 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
2938 if the DNS of the sending site is misconfigured. This is quite a
2939 common situation. This change restores the behaviour of treating a
2940 helo verification defer as a failure.
2942 PH/51 If self=fail was set on a router, the bounce message did not include the
2943 actual error message.
2949 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
2951 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
2952 command itself ended in error, the underlying message about the transport
2953 filter timeout was being overwritten with the pipe command error. Now the
2954 underlying error message should be appended to the second error message.
2956 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
2958 PH/02 Reduce the amount of output that "make" produces by default. Full output
2959 can still be requested.
2961 PH/03 The warning log line about a condition test deferring for a "warn" verb
2962 was being output only once per connection, rather than after each
2963 occurrence (because it was using the same function as for successful
2964 "warn" verbs). This seems wrong, so I have changed it.
2966 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
2967 it should not have, which might have caused a crash in the right
2968 circumstances, but probably never did.
2970 PH/04 Installed a modified version of Tony Finch's patch to make submission
2971 mode fix the return path as well as the Sender: header line, and to
2972 add a /name= option so that you can make the user's friendly name appear
2975 TF/03 Added the control = fakedefer ACL modifier.
2977 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
2978 Mark Lowes for thorough testing.
2980 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
2982 TK/03 Merged latest SRS patch from Miles Wilton.
2984 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
2985 with the definition in sysexits.h (which is #included earlier).
2986 Fortunately, Exim does not actually use EX_OK. The code used to try to
2987 preserve the sysexits.h value, by assumimg that macro definitions were
2988 scanned for macro replacements. I have been disabused of this notion,
2989 so now the code just undefines EX_OK before #including unistd.h.
2991 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
2992 in the smtp transport. When a block could not be written in a single
2993 write() function, the timeout was being re-applied to each part-write.
2994 This seems wrong - if the receiver was accepting one byte at a time it
2995 would take for ever. The timeout is now adjusted when this happens. It
2996 doesn't have to be particularly precise.
2998 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
2999 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
3001 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3002 without a domain if the check to <postmaster@domain> fails.
3004 SC/01 Eximstats: added -xls and the ability to specify output files
3005 (patch written by Frank Heydlauf).
3007 SC/02 Eximstats: use FileHandles for outputing results.
3009 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3011 SC/04 Eximstats: fixed display of large numbers with -nvr option
3013 SC/05 Eximstats: fixed merging of reports with empty tables.
3015 SC/06 Eximstats: added the -include_original_destination flag
3017 SC/07 Eximstats: removed tabs and trailing whitespace.
3019 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3021 TK/06 MBOX spool code: Add real "From " MBOX separator line
3022 so the .eml file is really in mbox format (even though
3023 most programs do not really care). Patch from Alex Miller.
3025 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3026 The latter is generated from $received_to and is only set if the
3027 message has one envelope recipient. SA can use these headers,
3028 obviously out-of-the-box. Patch from Alex Miller.
3030 PH/08 The ${def test on a variable was returning false if the variable's
3031 value was "0", contrary to what the specification has always said!
3032 The result should be true unless the variable is empty.
3034 PH/09 The syntax error of a character other than { following "${if
3035 def:variable_name" (after optional whitespace) was not being diagnosed.
3036 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
3037 accidental colon was present, for example, could give incorrect results.
3039 PH/10 Tidied the code in a number of places where the st_size field of a stat()
3040 result is used (not including appendfile, where other changes are about
3043 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
3044 This involved changing a lot of size variables from int to off_t. It
3045 should work with maildirs and everything.
3047 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
3048 spamd dying while we are connected to it.
3050 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
3053 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
3054 function for BDB 4.3.
3056 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
3058 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
3059 the sources for PCRE have been re-arranged and more files are now
3062 PH/15 The code I had for printing potentially long long variables in PH/11
3063 above was not the best (it lost precision). The length of off_t variables
3064 is now inspected at build time, and an appropriate printing format (%ld
3065 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
3066 to be "long long int" or "long int". This is needed for the internal
3067 formatting function string_vformat().
3069 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
3070 the configuration file to be ":syslog", then the script "guesses" where
3071 the logs files are, rather than using the compiled in default. In our
3072 case the guess is not the same as the compiled default, so the script
3073 suddenly stopped working when I started to use syslog. The patch checks
3074 to see if log_file_path is "". If so, it attempts to read it from exim
3075 with no configuration file to get the compiled in version, before it
3076 falls back to the previous guessing code."
3078 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
3079 implementing BATV in an Exim configuration. See NewStuff for the gory
3082 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
3083 Makefile that are specific to HP-UX.
3085 PH/18 If the "use_postmaster" option was set for a recipient callout together
3086 with the "random" option, the postmaster address was used as the MAIL
3087 FROM address for the random test, but not for the subsequent recipient
3088 test. It is now used for both.
3090 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
3091 patch removes a few documentation additions to RFC 3028, because the
3092 latest draft now contains them. It adds the new en;ascii-case comparator
3093 and a new error check for 8bit text in MIME parts. Comparator and
3094 require names are now matched exactly. I enabled the subaddress
3095 extension, but it is not well tested yet (read: it works for me)."
3097 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
3098 rework some of the code of TK/09 above to avoid the hardwired use of
3099 "%lld" and "long long". Replaced the call to snprintf() with a call to
3102 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
3103 records point to non-existent hosts", "retry timeout exceeded", and
3104 "retry time not reached for any host after a long failure period".
3106 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
3107 experimental DomainKeys support:
3109 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
3110 (2) On an error such as an illegally used "control", the wrong name for
3111 the control was given.
3113 These problems did NOT occur unless DomainKeys support was compiled.
3115 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
3117 PH/24 Added ${if match_ip condition.
3119 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
3120 databases so that it will be absolutely obvious if a crash occurs in the
3121 DB library. This is a regular occurrence (often caused by mis-matched
3124 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
3125 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
3126 picked up on a user's system that detects such things. There doesn't seem
3127 to be a gcc warning option for this - only an attribute that has to be
3128 put on the function's prototype. It seems that in Fedora Core 4 they have
3129 set this on a number of new functions. No doubt there will be more in due
3132 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
3133 specify a transport. However, if an address that was verified by such a
3134 router was the subject of a callout, Exim crashed because it tried to
3135 read the rcpt_include_affixes from the non-existent transport. Now it
3136 just assumes that the setting of that option is false. This bug was
3137 introduced by 4.51/PH/31.
3139 PH/28 Changed -d+all to exclude +memory, because that information is very
3140 rarely of interest, but it makes the output a lot bigger. People tend to
3141 do -d+all out of habit.
3143 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3144 code in os-type was giving problems when libc.so lives in lib64, like on
3147 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3148 aren't the modern standard, and it seems that some systems' include files
3149 don't always have them. Exim was already checking for some of the newer
3150 ones like T_AAAA, and defining it itself. I've added checks for all the
3151 record types that Exim uses.
3153 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3154 not automatically generating a new one, as it is supposed to. This
3155 prevented TLS from working. If the file did exist, but contained invalid
3156 data, a new version was generated, as expected. It was only the case of a
3157 non-existent file that was broken.
3159 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3160 with a change in libdomainkeys > 0.64.
3162 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3163 from DNS. If the selector record carries the flag, it now has
3164 precedence over the domain-wide flag.
3166 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3168 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3169 the use of a port name that isn't defined in /etc/services) occurred, the
3170 message was deferred as in a normal delivery, and thus remained on the
3171 spool, instead of being failed because of the mua_wrapper setting. This
3172 is now fixed, and I tidied up some of the mua_wrapper messages at the
3175 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3176 the messages in a hash of arrays rather than using individual hashes.
3177 This is a bit cleaner and results in dramatic memory savings, albeit
3178 at a slight CPU cost.
3180 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3181 as requested by Marc Sherman.
3183 SC/10 Eximstats: added histograms for user specified patterns as requested
3186 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3188 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3189 fopen() in the content-scanning modules that did not already have it.
3195 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3196 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3198 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3200 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3202 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3203 to test Sieve filters that use "vacation".
3205 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3206 that changes the way the GnuTLS parameters are stored in the cache file.
3207 The new format can be generated externally. For backward compatibility,
3208 if the data in the cache doesn't make sense, Exim assumes it has read an
3209 old-format file, and it generates new data and writes a new file. This
3210 means that you can't go back to an older release without removing the
3213 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3214 work if there are any delivery delays because "one_time" forces the
3215 parent to be marked "delivered", so its unseen clone is never tried
3216 again. For this reason, Exim now forbids the simultaneous setting of
3219 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3220 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3221 entry if you want to know the details. The fix, however, neglected to
3222 consider the case when local delivery batching is involved. The test for
3223 "previously delivered" was not happening when checking to see if an
3224 address could be batched with a previous (undelivered) one; under
3225 certain circumstances this could lead to multiple deliveries to the same
3228 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3229 in its include files, and this causes problems building Exim.
3231 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3232 header_syntax) but Exim was just ignoring anything given after a slash.
3233 In particular, this caused confusion with an attempt to use "verify =
3234 reverse_host_lookup/defer_ok". An error is now given when options are
3235 supplied for verify items that do not have them. (Maybe reverse_host_
3236 lookup should have a defer_ok option, but that's a different point.)
3238 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3239 defined by RFC 821) to 2048, because there were problems with some AUTH
3240 commands, and RFC 1869 says the size should be increased for extended
3241 SMTP commands that take arguments.
3243 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3246 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3247 "unknown" error; now it says that the functionality isn't in the binary.
3249 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3250 an address' error message when a string expansion fails (syntax or
3251 whatever). Otherwise the password may appear in the log. Following change
3252 PH/42 below, there is no longer a chance of it appearing in a bounce
3255 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3257 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3258 of its addresses was ever tried. (Bugzilla bug #2.)
3260 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3261 the result incorrectly in the debug output. (It correctly added a newline
3262 to what was transported.)
3264 TF/01 Added $received_time.
3266 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3267 commented out examples of how to interface to a virus scanner and to
3268 SpamAssassin. Also added commented examples of av_scanner and
3269 spamd_address settings.
3271 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3272 and controls are allowed in which ACLs. There were a couple of minor
3273 errors. Some of the entries in the conditions table (which is a table of
3274 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3275 negation of where the condition IS allowed.
3277 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3279 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3280 header file does not have a version number, so I've had to invent a new
3281 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3282 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3283 radiusclient), but it was contributed by a Radius user.
3285 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3286 files or directories, for OpenSSL.
3288 PH/19 When an Exim process that is running as root has to create an Exim log
3289 file, it does so in a subprocess that runs as exim:exim so as to get the
3290 ownership right at creation (otherwise, other Exim processes might see
3291 the file with the wrong ownership). There was no test for failure of this
3292 fork() call, which would lead to the process getting stuck as it waited
3293 for a non-existent subprocess. Forks do occasionally fail when resources
3294 run out. I reviewed all the other calls to fork(); they all seem to check
3297 PH/20 When checking for unexpected SMTP input at connect time (before writing
3298 the banner), Exim was not dealing correctly with a non-positive return
3299 from the read() function. If the client had disconnected by this time,
3300 the result was a log entry for a synchronization error with an empty
3301 string after "input=" when read() returned zero. If read() returned -1
3302 (an event I could not check), uninitialized data bytes were printed.
3303 There were reports of junk text (parts of files, etc) appearing after
3306 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3308 PH/22 Added support for macro redefinition, and (re)definition in between
3309 driver and ACL definitions.
3311 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3312 forgetting to use the resulting value; it was using the unexpanded value.
3314 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3315 hadn't been configured. The fix is from Juergen Kreileder, who
3316 understands it better than I do:
3318 "Here's what I see happening with three configured cyrus_sasl
3319 authenticators configured (plain, login, cram-md5):
3321 On startup auth_cyrus_sasl_init() gets called for each of these.
3322 This means three calls to sasl_listmech() without a specified mech_list.
3323 => SASL tests which mechs of all available mechs actually work
3324 => three warnings about OTP not working
3325 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3327 With the patch, sasl_listmech() also gets called three times. But now
3328 SASL's mech_list option is set to the server_mech specified in the the
3329 authenticator. Or in other words, the answer from sasl_listmech()
3330 gets limited to just the mech you're testing for (which is different
3332 => the return list contains just 'plain' or 'login', 'cram-md5' or
3333 nothing depending on the value of ob->server_mech.
3335 I've just tested the patch: Authentication still works fine,
3336 unavailable mechs specified in the exim configuration are still
3337 caught, and the auth.log warnings about OTP are gone."
3339 PH/25 When debugging is enabled, the contents of the command line are added
3340 to the debugging output, even when log_selector=+arguments is not
3343 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3344 answer is "GNU", and only if the return is "GNU/something" is the answer
3347 PH/27 $acl_verify_message is now set immediately after the failure of a
3348 verification in an ACL, and so is available in subsequent modifiers. In
3349 particular, the message can be preserved by coding like this:
3351 warn !verify = sender
3352 set acl_m0 = $acl_verify_message
3354 Previously, $acl_verify_message was set only while expanding "message"
3355 and "log_message" when a very denied access.
3357 PH/28 Modified OS/os.c-Linux with
3359 -#ifndef OS_LOAD_AVERAGE
3360 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3362 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3363 nomenclature these days.)
3365 PH/29 Installed patch from the Sieve maintainer that adds the options
3366 sieve_useraddress and sieve_subaddress to the redirect router.
3368 PH/30 In these circumstances:
3369 . Two addresses routed to the same list of hosts;
3370 . First host does not offer TLS;
3371 . First host accepts first address;
3372 . First host gives temporary error to second address;
3373 . Second host offers TLS and a TLS session is established;
3374 . Second host accepts second address.
3375 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3376 and peerdn, if requested) that were in fact used only for the second
3379 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3380 attention to any local part prefix or suffix that was matched by the
3381 router that accepted the address. It now behaves in the same way as it
3382 does for delivery: the affixes are removed from the local part unless
3383 rcpt_include_affixes is set on the transport.
3385 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3386 timeout during the DATA phase of an incoming message.
3388 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3389 applied a patch sanctioned by the Sieve maintainer.
3391 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3392 the uid or gid is negative. A case of a negative gid caused this to be
3393 noticed. The fix allows for either to be negative.
3395 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3396 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3399 PH/36 The change PH/12 above was broken. Fixed it.
3401 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3402 the grounds that routing the same address twice would always produce the
3403 same answer. This might have been true once, but it is certainly no
3404 longer true now. Routing a child address may depend on the previous
3405 routing that produced that child. Some complicated redirection strategies
3406 went wrong when messages had multiple recipients, and made Exim's
3407 behaviour dependent on the order in which the addresses were given.
3409 I have moved the duplicate checking until after the routing is complete.
3410 Exim scans the addresses that are assigned to local and remote
3411 transports, and removes any duplicates. This means that more work will be
3412 done, as duplicates will always all be routed, but duplicates are
3413 presumably rare, so I don't expect this is of any significance.
3415 For deliveries to pipes, files, and autoreplies, the duplicate checking
3416 still happens during the routing process, since they are not going to be
3419 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3420 It corrects a timeout issue with spamd. This is Ian's comment: "The
3421 background is that sometimes spamd either never reads data from a
3422 connection it has accepted, or it never writes response data. The exiscan
3423 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3424 blindly assumes that writes won't block so it may never time out."
3426 PH/39 Allow G after quota size as well as K and M.
3428 PH/40 The value set for $authenticated_id in an authenticator may not contain
3429 binary zeroes or newlines because the value is written to log lines and
3430 to spool files. There was no check on this. Now the value is run through
3431 the string_printing() function so that such characters are converted to
3432 printable escape sequences.
3434 PH/41 $message_linecount is a new variable that contains the total number of
3435 lines in the message. Compare $body_linecount, which is the count for the
3438 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3439 bounce and delay warning messages, except in certain special cases, which
3442 (a) An SMTP error message from a remote host;
3443 (b) A message specified in a :fail: redirection;
3444 (c) A message specified in a "fail" command in a system filter;
3445 (d) A message specified in a FAIL return from the queryprogram router;
3446 (e) A message specified by the cannot_route_message router option.
3448 In these cases only, Exim does include the error details in bounce and
3449 warning messages. There are also a few cases where bland messages such
3450 as "unrouteable address" or "local delivery error" are given.
3452 PH/43 $value is now also set for the "else" part of a ${run expansion.
3454 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3455 being worked on, but at least Exim now implements the latest version to
3458 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3459 process to complete was treated as a delivery failure, a timeout while
3460 writing the message to the pipe was logged, but erroneously treated as a
3461 successful delivery. Such timeouts include transport filter timeouts. For
3462 consistency with the overall process timeout, these timeouts are now
3463 treated as errors, giving rise to delivery failures by default. However,
3464 there is now a new Boolean option for the pipe transport called
3465 timeout_defer, which, if set TRUE, converts the failures into defers for
3466 both kinds of timeout. A transport filter timeout is now identified in
3469 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3470 systems where "make" and "gmake" are different, calling "gmake" at top
3471 level broke things. I've arranged for the value of $(MAKE) to be passed
3472 from the Makefile to this script so that it can call the same version of
3476 A note about Exim versions 4.44 and 4.50
3477 ----------------------------------------
3479 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3480 changes of various kinds. As a consequence, a big documentation update was
3481 needed. This delayed the release for rather longer than seemed good, especially
3482 in the light of a couple of (minor) security issues. Therefore, the changes
3483 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3484 release. So 4.44 and 4.50 are in effect two different branches that both start
3487 I have left the 4.50 change log unchanged; it contains all the changes since
3488 4.43. The change log for 4.44 is below; many of its items are identical to
3489 those for 4.50. This seems to be the most sensible way to preserve the
3490 historical information.
3496 1. Minor wording change to the doc/README.SIEVE file.
3498 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3499 computation of the current number of files was incorrect.
3501 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3502 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3505 4. Give more explanation in the error message when the command for a transport
3506 filter fails to execute.
3508 5. There are several places where Exim runs a non-Exim command in a
3509 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3510 was being done only for the command run by the queryprogram router. It is
3511 now done for all such subprocesses. The other cases are: ${run, transport
3512 filters, and the commands run by the lmtp and pipe transports.
3514 6. Added CONFIGURE_GROUP build-time option.
3516 7. Some older OS have a limit of 256 on the maximum number of file
3517 descriptors. Exim was using setrlimit() to set 1000 as a large value
3518 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3519 systems. I've change it so that if it can't get 1000, it tries for 256.
3521 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3522 was an oversight, and furthermore, ever since the addition of extra
3523 controls (e.g. 4.43/32), the checks on when to allow different forms of
3524 "control" were broken. There should now be diagnostics for all cases when a
3525 control that does not make sense is encountered.
3527 9. Added the /retain_sender option to "control=submission".
3529 10. $recipients is now available in the predata ACL (oversight).
3531 11. Tidy the search cache before the fork to do a delivery from a message
3532 received from the command line. Otherwise the child will trigger a lookup
3533 failure and thereby defer the delivery if it tries to use (for example) a
3534 cached ldap connection that the parent has called unbind on.
3536 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3537 of $address_data from the recipient verification was clobbered by the
3538 sender verification.
3540 13. The value of address_data from a sender verification is now available in
3541 $sender_address_data in subsequent conditions in the ACL statement.
3543 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3545 15. Added a new option "connect=<time>" to callout options, to set a different
3548 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3549 was its contents. (It was OK if the option was not defined at all.)
3551 17. A "Completed" log line is now written for messages that are removed from
3552 the spool by the -Mrm option.
3554 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3555 information about exactly what failed.
3557 19. Added -dd to debug only the daemon process.
3559 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3560 handles timeouts, both on the server side and network timeouts. Renamed the
3561 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3563 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3564 It is now set to "smtps".
3566 22. $host_address is now set to the target address during the checking of
3567 ignore_target_hosts.
3569 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3570 being passed; this would have caused $sender_host_name to have been used if
3571 matching the list had actually called for a host name (not very likely,
3572 since this list is usually IP addresses). A host name is now passed as
3575 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3576 code that specifies a non-restarting handler (typically sigaction() in
3577 modern systems) in an attempt to fix a rare and obscure crash bug.
3579 25. Narrowed the window for a race in the daemon that could cause it to ignore
3580 SIGCHLD signals. This is not a major problem, because they are used only to
3581 wake it up if nothing else does.
3583 26. A malformed maildirsize file could cause Exim to calculate negative values
3584 for the mailbox size or file count. Odd effects could occur as a result.
3585 The maildirsize information is now recalculated if the size or filecount
3588 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3589 support for a long time. Removed HAVE_SYS_VFS_H.
3591 28. Installed the latest version of exipick from John Jetmore.
3593 29. In an address list, if the pattern was not a regular expression, an empty
3594 subject address (from a bounce message) matched only if the pattern was an
3595 empty string. Non-empty patterns were not even tested. This was the wrong
3596 because it is perfectly reasonable to use an empty address as part of a
3597 database query. An empty address is now tested by patterns that are
3598 lookups. However, all the other forms of pattern expect the subject to
3599 contain a local part and a domain, and therefore, for them, an empty
3600 address still always fails if the pattern is not itself empty.
3602 30. Exim went into a mad DNS loop when attempting to do a callout where the
3603 host was specified on an smtp transport, and looking it up yielded more
3604 than one IP address.
3606 31. Re-factored the code for checking spool and log partition space into a
3607 function that finds that data and another that does the check. The former
3608 is then used to implement four new variables: $spool_space, $log_space,
3609 $spool_inodes, and $log_inodes.
3611 32. The RFC2047 encoding function was originally intended for short strings
3612 such as real names; it was not keeping to the 75-character limit for
3613 encoded words that the RFC imposes. It now respects the limit, and
3614 generates multiple encoded words if necessary. To be on the safe side, I
3615 have increased the buffer size for the ${rfc2047: expansion operator from
3618 33. It is now permitted to omit both strings after an "if" condition; if the
3619 condition is true, the result is "true". As before, when the second string
3620 is omitted, a false condition yields an empty string. This makes it less
3621 cumbersome to write custom ACL and router conditions.
3623 34. Failure to deliver a bounce message always caused it to be frozen, even if
3624 there was an errors_to setting on the router. The errors_to setting is now
3627 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3628 canonical form (fully expanded) before being placed in
3629 $sender_host_address.
3631 36. The table in the code that translates DNS record types into text (T_A to
3632 "A" for instance) was missing entries for NS and CNAME. It is just possible
3633 that this could have caused confusion if both these types were looked up
3634 for the same domain, because the text type is used as part of Exim's
3635 per-process caching. But the chance of anyone hitting this buglet seems
3638 37. The dnsdb lookup has been extended in a number of ways.
3640 (1) There is a new type, "zns", which walks up the domain tree until it
3641 finds some nameserver records. It should be used with care.
3643 (2) There is a new type, "mxh", which is like "mx" except that it returns
3644 just the host names, not the priorities.
3646 (3) It is now possible to give a list of domains (or IP addresses) to be
3647 looked up. The behaviour when one of the lookups defers can be
3648 controlled by a keyword.
3650 (4) It is now possible to specify the separator character for use when
3651 multiple records are returned.
3653 38. The dnslists ACL condition has been extended: it is now possible to supply
3654 a list of IP addresses and/or domains to be looked up in a particular DNS
3657 39. Added log_selector=+queue_time_overall.
3659 40. When running the queue in the test harness, wait just a tad after forking a
3660 delivery process, to get repeatability of debugging output.
3662 41. Include certificate and key file names in error message when GnuTLS fails
3663 to set them up, because the GnuTLS error message doesn't include the name
3664 of the failing file when there is a problem reading it.
3666 42. Allow both -bf and -bF in the same test run.
3668 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3670 44. The "Exiscan patch" is now merged into the mainline Exim source.
3672 45. Sometimes the final signoff response after QUIT could fail to get
3673 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3674 < 0 before doing a fflush(). This bug looks as though it goes back to the
3675 introduction of TLS in release 3.20, but "sometimes" must have been rare
3676 because the tests only now provoked it.
3678 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3679 (this can affect the format of dates).
3681 47. exim_tidydb, when checking for the continued existence of a message for
3682 which it has found a message-specific retry record, was not finding
3683 messages that were in split spool directories. Consequently, it was
3684 deleting retry records that should have stayed in existence.
3686 48. Steve fixed some bugs in eximstats.
3688 49. The SPA authentication driver was not abandoning authentication and moving
3689 on to the next authenticator when an expansion was forced to fail,
3690 contradicting the general specification for all authenticators. Instead it
3691 was generating a temporary error. It now behaves as specified.
3693 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3694 (the order specifies the preference for clients). The order is now AES256,
3695 AES128, 3DES, ARCFOUR128.
3697 51. Small patch to Sieve code - explicitly set From: when generating an
3700 52. Exim crashed if a remote delivery caused a very long error message to be
3701 recorded - for instance if somebody sent an entire SpamAssassin report back
3702 as a large number of 550 error lines. This bug was coincidentally fixed by
3703 increasing the size of one of Exim's internal buffers (big_buffer) that
3704 happened as part of the Exiscan merge. However, to be on the safe side, I
3705 have made the code more robust (and fixed the comments that describe what
3708 53. Now that there can be additional text after "Completed" in log lines (if
3709 the queue_time_overall log selector is set), a one-byte patch to exigrep
3710 was needed to allow it to recognize "Completed" as not the last thing in
3713 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3714 patch that reportedly fixes this has been added. I am not expert enough to
3715 create a test for it. This is what the patch creator wrote:
3717 "I found a little strange behaviour of ldap code when working with
3718 Windows 2003 AD Domain, where users was placed in more than one
3719 Organization Units. When I tried to give exim partial DN, the exit code
3720 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3721 But simultaneously result of request was absolutely normal ldap result,
3722 so I produce this patch..."
3724 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3725 REFERENCE, so I have modified the code to exclude the patch when that macro
3728 55. Some experimental protocols are using DNS PTR records for new purposes. The
3729 keys for these records are domain names, not reversed IP addresses. The
3730 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3731 leaves it alone. Component reversal etc. now happens only for IP addresses.
3734 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3736 57. Double the size of the debug message buffer (to 2048) so that more of very
3737 long debug lines gets shown.
3739 58. The exicyclog utility now does better if the number of log files to keep
3740 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3742 59. Two changes related to the smtp_active_hostname option:
3744 (1) $smtp_active_hostname is now available as a variable.
3745 (2) The default for smtp_banner uses $smtp_active_hostname instead
3746 of $primary_hostname.
3748 60. The host_aton() function is supposed to be passed a string that is known
3749 to be a valid IP address. However, in the case of IPv6 addresses, it was
3750 not checking this. This is a hostage to fortune. Exim now panics and dies
3751 if the condition is not met. A case was found where this could be provoked
3752 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3753 components; fortuitously, this particular loophole had already been fixed
3754 by change 4.50/55 above.
3756 If there are any other similar loopholes, the new check in host_aton()
3757 itself should stop them being exploited. The report I received stated that
3758 data on the command line could provoke the exploit when Exim was running as
3759 exim, but did not say which command line option was involved. All I could
3760 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3761 running as the user.
3764 61. There was a buffer overflow vulnerability in the SPA authentication code
3765 (which came originally from the Samba project). I have added a test to the
3766 spa_base64_to_bits() function which I hope fixes it.
3769 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3770 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3772 63. The daemon start-up calls getloadavg() while still root for those OS that
3773 need the first call to be done as root, but it missed one case: when
3774 deliver_queue_load_max is set with deliver_drop_privilege. This is
3775 necessary for the benefit of the queue runner, because there is no re-exec
3776 when deliver_drop_privilege is set.
3778 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3779 This has been fixed.
3781 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3782 was in use, was not putting the data itself into the right store pool;
3783 consequently, it could be overwritten for a subsequent message in the same
3784 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3787 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3789 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3790 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3791 the function were treating the return as a boolean value, which happened to
3792 work because 0=false and not-0=true, but is not correct code.
3794 68. The host_aton() function was not handling scoped IPv6 addresses (those
3795 with, for example, "%eth0" on the end) correctly.
3797 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3798 negated items (that is, ~something) in unsigned ints. Some compilers
3799 apparently mutter when there is no cast.
3801 70. If an address verification called from an ACL failed, and did not produce a
3802 user-specific message (i.e. there was only a "system" message), nothing was
3803 put in $acl_verify_message. In this situation, it now puts the system
3806 71. Change 4.23/11 added synchronization checking at the start of an SMTP
3807 session; change 4.31/43 added the unwanted input to the log line - except
3808 that it did not do this in the start of session case. It now does.
3810 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
3811 This is wrong and can cause the other end to generate a synchronization
3812 error if it is another Exim or anything else that does the synchronization
3813 check. A QUIT command is no longer sent after a timeout.
3815 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
3816 during host lookups.
3818 74. The defer_ok option of callout verification was not working if it was used
3819 when verifying addresses in header lines, that is, for this case:
3821 verify = header_sender/callout=defer_ok
3823 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
3824 those file descriptors could be used for SMTP connections. If anything
3825 wrote to stderr (the example that came up was "warn" in embedded Perl), it
3826 could be sent to the SMTP client, causing chaos. The daemon now opens
3827 stdin, stdout, and stderr to /dev/null when it puts itself into the
3830 76. Arrange for output from Perl's "warn" command to be written to Exim's main
3831 log by default. The user can override this with suitable Perl magic.
3833 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
3834 the log message when discard triggers, was not working for the DATA ACL or
3835 for the non-SMTP ACL.
3837 78. Error message wording change in sieve.c.
3839 79. If smtp_accept_max_per_host was set, the number of connections could be
3840 restricted to fewer than expected, because the daemon was trying to set up
3841 a new connection before checking whether the processes handling previous
3842 connections had finished. The check for completed processes is now done
3843 earlier. On busy systems, this bug wouldn't be noticed because something
3844 else would have woken the daemon, and it would have reaped the completed
3847 80. If a message was submitted locally by a user whose login name contained one
3848 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
3849 It caused a spool format error. I have fixed the spool reading code. A
3850 related problem was that the "from" clause in the Received: line became
3851 illegal because of the space(s). It is now covered by ${quote_local_part.
3853 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
3856 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
3858 83. Patch from Sieve maintainer to fix unterminated string problem in
3859 "vacation" handling.
3861 84. Some minor changes to the Linux configuration files to help with other
3862 OS variants using glibc.
3864 85. One more patch for Sieve to update vacation handling to latest spec.
3867 ----------------------------------------------------
3868 See the note above about the 4.44 and 4.50 releases.
3869 ----------------------------------------------------
3875 1. Change 4.43/35 introduced a bug that caused file counts to be
3876 incorrectly computed when quota_filecount was set in an appendfile
3879 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3880 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3883 3. Give more explanation in the error message when the command for a transport
3884 filter fails to execute.
3886 4. There are several places where Exim runs a non-Exim command in a
3887 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3888 was being done only for the command run by the queryprogram router. It is
3889 now done for all such subprocesses. The other cases are: ${run, transport
3890 filters, and the commands run by the lmtp and pipe transports.
3892 5. Some older OS have a limit of 256 on the maximum number of file
3893 descriptors. Exim was using setrlimit() to set 1000 as a large value
3894 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3895 systems. I've change it so that if it can't get 1000, it tries for 256.
3897 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3898 was an oversight, and furthermore, ever since the addition of extra
3899 controls (e.g. 4.43/32), the checks on when to allow different forms of
3900 "control" were broken. There should now be diagnostics for all cases when a
3901 control that does not make sense is encountered.
3903 7. $recipients is now available in the predata ACL (oversight).
3905 8. Tidy the search cache before the fork to do a delivery from a message
3906 received from the command line. Otherwise the child will trigger a lookup
3907 failure and thereby defer the delivery if it tries to use (for example) a
3908 cached ldap connection that the parent has called unbind on.
3910 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3911 of $address_data from the recipient verification was clobbered by the
3912 sender verification.
3914 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3915 was its contents. (It was OK if the option was not defined at all.)
3917 11. A "Completed" log line is now written for messages that are removed from
3918 the spool by the -Mrm option.
3920 12. $host_address is now set to the target address during the checking of
3921 ignore_target_hosts.
3923 13. When checking ignore_target_hosts for an ipliteral router, no host name was
3924 being passed; this would have caused $sender_host_name to have been used if
3925 matching the list had actually called for a host name (not very likely,
3926 since this list is usually IP addresses). A host name is now passed as
3929 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3930 code that specifies a non-restarting handler (typically sigaction() in
3931 modern systems) in an attempt to fix a rare and obscure crash bug.
3933 15. Narrowed the window for a race in the daemon that could cause it to ignore
3934 SIGCHLD signals. This is not a major problem, because they are used only to
3935 wake it up if nothing else does.
3937 16. A malformed maildirsize file could cause Exim to calculate negative values
3938 for the mailbox size or file count. Odd effects could occur as a result.
3939 The maildirsize information is now recalculated if the size or filecount
3942 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3943 support for a long time. Removed HAVE_SYS_VFS_H.
3945 18. Updated exipick to current release from John Jetmore.
3947 19. Allow an empty sender to be matched against a lookup in an address list.
3948 Previously the only cases considered were a regular expression, or an
3951 20. Exim went into a mad DNS lookup loop when doing a callout where the
3952 host was specified on the transport, if the DNS lookup yielded more than
3955 21. The RFC2047 encoding function was originally intended for short strings
3956 such as real names; it was not keeping to the 75-character limit for
3957 encoded words that the RFC imposes. It now respects the limit, and
3958 generates multiple encoded words if necessary. To be on the safe side, I
3959 have increased the buffer size for the ${rfc2047: expansion operator from
3962 22. Failure to deliver a bounce message always caused it to be frozen, even if
3963 there was an errors_to setting on the router. The errors_to setting is now
3966 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3967 canonical form (fully expanded) before being placed in
3968 $sender_host_address.
3970 24. Updated eximstats to version 1.33
3972 25. Include certificate and key file names in error message when GnuTLS fails
3973 to set them up, because the GnuTLS error message doesn't include the name
3974 of the failing file when there is a problem reading it.
3976 26. Expand error message when OpenSSL has problems setting up cert/key files.
3979 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
3980 (this can affect the format of dates).
3982 28. exim_tidydb, when checking for the continued existence of a message for
3983 which it has found a message-specific retry record, was not finding
3984 messages that were in split spool directories. Consequently, it was
3985 deleting retry records that should have stayed in existence.
3987 29. eximstats updated to version 1.35
3988 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
3989 1.35 - bugfix such that pie charts by volume are generated correctly
3991 30. The SPA authentication driver was not abandoning authentication and moving
3992 on to the next authenticator when an expansion was forced to fail,
3993 contradicting the general specification for all authenticators. Instead it
3994 was generating a temporary error. It now behaves as specified.
3996 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
3997 (the order specifies the preference for clients). The order is now AES256,
3998 AES128, 3DES, ARCFOUR128.
4000 31. Small patch to Sieve code - explicitly set From: when generating an
4003 32. Exim crashed if a remote delivery caused a very long error message to be
4004 recorded - for instance if somebody sent an entire SpamAssassin report back
4005 as a large number of 550 error lines. This bug was coincidentally fixed by
4006 increasing the size of one of Exim's internal buffers (big_buffer) that
4007 happened as part of the Exiscan merge. However, to be on the safe side, I
4008 have made the code more robust (and fixed the comments that describe what
4011 33. Some experimental protocols are using DNS PTR records for new purposes. The
4012 keys for these records are domain names, not reversed IP addresses. The
4013 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4014 leaves it alone. Component reversal etc. now happens only for IP addresses.
4017 34. The host_aton() function is supposed to be passed a string that is known
4018 to be a valid IP address. However, in the case of IPv6 addresses, it was
4019 not checking this. This is a hostage to fortune. Exim now panics and dies
4020 if the condition is not met. A case was found where this could be provoked
4021 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4022 components; fortuitously, this particular loophole had already been fixed
4023 by change 4.50/55 or 4.44/33 above.
4025 If there are any other similar loopholes, the new check in host_aton()
4026 itself should stop them being exploited. The report I received stated that
4027 data on the command line could provoke the exploit when Exim was running as
4028 exim, but did not say which command line option was involved. All I could
4029 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4030 running as the user.
4033 35. There was a buffer overflow vulnerability in the SPA authentication code
4034 (which came originally from the Samba project). I have added a test to the
4035 spa_base64_to_bits() function which I hope fixes it.
4038 36. The daemon start-up calls getloadavg() while still root for those OS that
4039 need the first call to be done as root, but it missed one case: when
4040 deliver_queue_load_max is set with deliver_drop_privilege. This is
4041 necessary for the benefit of the queue runner, because there is no re-exec
4042 when deliver_drop_privilege is set.
4044 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4045 was in use, was not putting the data itself into the right store pool;
4046 consequently, it could be overwritten for a subsequent message in the same
4047 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4050 38. Sometimes the final signoff response after QUIT could fail to get
4051 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4052 < 0 before doing a fflush(). This bug looks as though it goes back to the
4053 introduction of TLS in release 3.20, but "sometimes" must have been rare
4054 because the tests only now provoked it.
4060 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
4061 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
4062 Now it returns an integer. A number of calls were still expecting a T/F
4063 return. Fortuitously, in all cases, the tests worked in OK situations,
4064 which is the norm. However, things would have gone wrong on any write
4065 failures on the smtp file descriptor. This function is used when sending
4066 messages over SMTP and also when doing verify callouts.
4068 2. When Exim is called to do synchronous delivery of a locally submitted
4069 message (the -odf or -odi options), it no longer closes stderr before doing
4072 3. Implemented the mua_wrapper option.
4074 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
4076 5. Implemented the functions header_remove(), header_testname(),
4077 header_add_at_position(), and receive_remove_recipient(), and exported them
4080 6. If an ACL "warn" statement specified the addition of headers, Exim already
4081 inserted X-ACL-Warn: at the start if there was no header name. However, it
4082 was not making this test for the second and subsequent header lines if
4083 there were newlines in the string. This meant that an invalid header could
4084 be inserted if Exim was badly configured.
4086 7. Allow an ACL "warn" statement to add header lines at the start or after all
4087 the Received: headers, as well as at the end.
4089 8. Added the rcpt_4xx retry error code.
4091 9. Added postmaster_mailfrom=xxx to callout verification option.
4093 10. Added mailfrom=xxxx to the callout verification option, for verify=
4096 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
4097 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
4099 12. Inserted some casts to stop certain compilers warning when using pointer
4100 differences as field lengths or precisions in printf-type calls (mostly
4101 affecting debugging statements).
4103 13. Added optional readline() support for -be (dynamically loaded).
4105 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
4106 same clock tick as a message's arrival, so that its received time was the
4107 same as the "first fail" time on the retry record, and that message
4108 remained on the queue past the ultimate address timeout, every queue runner
4109 would try a delivery (because it was past the ultimate address timeout) but
4110 after another failure, the ultimate address timeout, which should have then
4111 bounced the address, did not kick in. This was a "< instead of <=" error;
4112 in most cases the first failure would have been in the next clock tick
4113 after the received time, and all would be well.
4115 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
4116 being recognized when the domain list was tested by the match_domain
4117 condition in an expansion string.
4119 16. Added the ${str2b64: operator.
4121 17. Exim was always calling setrlimit() to set a large limit for the number of
4122 processes, without checking whether the existing limit was already
4123 adequate. (It did check for the limit on file descriptors.) Furthermore,
4124 errors from getrlimit() and setrlimit() were being ignored. Now they are
4125 logged to the main and panic logs, but Exim does carry on, to try to do its
4126 job under whatever limits there are.
4128 18. Imported PCRE 5.0.
4130 19. Trivial typo in log message " temporarily refused connection" (the leading
4133 20. If the log selector return_path_on_delivery was set and an address was
4134 redirected to /dev/null, the delivery process crashed because it assumed
4135 that a return path would always be set for a "successful" delivery. In this
4136 case, the whole delivery is bypassed as an optimization, and therefore no
4139 21. Internal re-arrangement: the function for sending a challenge and reading
4140 a response while authentication was assuming a zero-terminated challenge
4141 string. It's now changed to take a pointer and a length, to allow for
4142 binary data in such strings.
4144 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4146 23. Exim was not respecting finduser_retries when seeking the login of the
4147 uid under which it was called; it was always trying 10 times. (The default
4148 setting of finduser_retries is zero.) Also, it was sleeping after the final
4149 failure, which is pointless.
4151 24. Implemented tls_on_connect_ports.
4153 25. Implemented acl_smtp_predata.
4155 26. If the domain in control=submission is set empty, Exim assumes that the
4156 authenticated id is a complete email address when it generates From: or
4157 Sender: header lines.
4159 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4160 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4161 chown and chgrp in /bin and hostname in /usr/bin.
4163 28. Exim was keeping the "process log" file open after each use, just as it
4164 does for the main log. This opens the possibility of it remaining open for
4165 long periods when the USR1 signal hits a daemon. Occasional processlog
4166 errors were reported, that could have been caused by this. Anyway, it seems
4167 much more sensible not to leave this file open at all, so that is what now
4170 29. The long-running daemon process does not normally write to the log once it
4171 has entered its main loop, and it closes the log before doing so. This is
4172 so that log files can straightforwardly be renamed and moved. However,
4173 there are a couple of unusual error situations where the daemon does write
4174 log entries, and I had neglected to close the log afterwards.
4176 30. The text of an SMTP error response that was received during a remote
4177 delivery was being truncated at 512 bytes. This is too short for some of
4178 the long messages that one sometimes sees. I've increased the limit to
4181 31. It is now possible to make retry rules that apply only when a message has a
4182 specific sender, in particular, an empty sender.
4184 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4185 it possible to be selective about when SMTP synchronization is enforced.
4187 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4189 32. Implemented hosts_connection_nolog.
4191 33. Added an ACL for QUIT.
4193 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4196 35. Added mailbox_size and mailbox_filecount to appendfile.
4198 36. Added control = no_multiline_responses to ACLs.
4200 37. There was a bug in the logic of the code that waits for the clock to tick
4201 in the case where the clock went backwards by a substantial amount such
4202 that the microsecond fraction of "now" was more than the microsecond
4203 fraction of "then" (but the whole seconds number was less).
4205 38. Added support for the libradius Radius client library this is found on
4206 FreeBSD (previously only the radiusclient library was supported).
4212 1. When certain lookups returned multiple values in the form name=value, the
4213 quoting of the values was not always being done properly. Specifically:
4214 (a) If the value started with a double quote, but contained no whitespace,
4216 (b) If the value contained whitespace other than a space character (i.e.
4217 tabs or newlines or carriage returns) it was not quoted.
4218 This fix has been applied to the mysql and pgsql lookups by writing a
4219 separate quoting function and calling it from the lookup code. The fix
4220 should probably also be applied to nisplus, ibase and oracle lookups, but
4221 since I cannot test any of those, I have not disturbed their existing code.
4223 2. A hit in the callout cache for a specific address caused a log line with no
4224 reason for rejecting RCPT. Now it says "Previous (cached) callout
4225 verification failure".
4227 3. There was an off-by-one bug in the queryprogram router. An over-long
4228 return line was truncated at 256 instead of 255 characters, thereby
4229 overflowing its buffer with the terminating zero. As well as fixing this, I
4230 have increased the buffer size to 1024 (and made a note to document this).
4232 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4233 when Exim is waiting for an SMTP response from a remote server, Exim
4234 restarts its select() call on the socket, thereby resetting its timeout.
4235 This is not a problem when such interrupts are rare. Somebody set up a cron
4236 job to run exiwhat every 2 minutes, which is less than the normal select()
4237 timeout (5 or 10 minutes). This meant that the select() timeout never
4238 kicked in because it was always reset. I have fixed this by comparing the
4239 time when an interrupt arrives with the time at the start of the first call
4240 to select(). If more time than the timeout has elapsed, the interrupt is
4241 treated as a timeout.
4243 5. Some internal re-factoring in preparation for the addition of Sieve
4244 extensions (by MH). In particular, the "personal" test is moved to a
4245 separate function, and given an option for scanning Cc: and Bcc: (which is
4246 not set for Exim filters).
4248 6. When Exim created an email address using the login of the caller as the
4249 local part (e.g. when creating a From: or Sender: header line), it was not
4250 quoting the local part when it contained special characters such as @.
4252 7. Installed new OpenBSD configuration files.
4254 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4255 try to make them clearer.
4257 9. Callout options, other than the timeout value, were being ignored when
4258 verifying sender addresses in header lines. For example, when using
4260 verify = header_sender/callout=no_cache
4262 the cache was (incorrectly) being used.
4264 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4265 only the Cygwin environment.
4267 11. When return_path_on_delivery was set as a log selector, if different remote
4268 addresses in the same message used different return paths and parallel
4269 remote delivery occurred, the wrong values would sometimes be logged.
4270 (Whenever a remote delivery process finished, the return path value from
4271 the most recently started remote delivery process was logged.)
4273 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4274 lines when AUTH and/or TLS are in use. This is the "received protocol"
4275 field. Exim used to use "asmtp" for authenticated SMTP, without any
4276 indication (in the protocol name) for TLS use. Now it follows the RFC and
4277 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4278 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4279 names appear in log lines as well as in Received: header lines.
4281 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4282 extensions, and comparison tests, and to fix some bugs.
4284 14. Changes to the "personal" filter test:
4286 (1) The test was buggy in that it was just doing the equivalent of
4287 "contains" tests on header lines. For example, if a user's address was
4288 anne@some.where, the "personal" test would incorrectly be true for
4290 To: susanne@some.where
4292 This test is now done by extracting each address from the header in turn,
4293 and checking the entire address. Other tests that are part of "personal"
4294 are now done using regular expressions (for example, to check local parts
4295 of addresses in From: header lines).
4297 (2) The list of non-personal local parts in From: addresses has been
4298 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4299 taken from the Sieve specification recommendations.
4301 (3) If the message contains any header line starting with "List-" it is
4302 treated as non-personal.
4304 (4) The test for "circular" in the Subject: header line has been removed
4305 because it now seems ill-conceived.
4307 15. Minor typos in src/EDITME comments corrected.
4309 16. Installed latest exipick from John Jetmore.
4311 17. If headers_add on a router specified a text string that was too long for
4312 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4313 of string_sprintf() is now avoided.
4315 18. $message_body_size was not set (it was always zero) when running the DATA
4316 ACL and the local_scan() function.
4318 19. For the "mail" command in an Exim filter, no default was being set for
4319 the once_repeat time, causing a random time value to be used if "once" was
4320 specified. (If the value happened to be <= 0, no repeat happened.) The
4321 default is now 0s, meaning "never repeat". The "vacation" command was OK
4322 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4323 (I found it when inspecting the code).
4325 20. There is now an overall timeout for performing a callout verification. It
4326 defaults to 4 times the callout timeout, which applies to individual SMTP
4327 commands during the callout. The overall timeout applies when there is more
4328 than one host that can be tried. The timeout is checked before trying the
4329 next host. This prevents very long delays if there are a large number of
4330 hosts and all are timing out (e.g. when the network connections are timing
4331 out). The value of the overall timeout can be changed by specifying an
4332 additional sub-option for "callout", called "maxwait". For example:
4334 verify = sender/callout=5s,maxwait=20s
4336 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4337 to the end before writing, but this should make it even safer).
4339 22. Exim was forgetting that it had advertised PIPELINING for the second and
4340 subsequent messages on an SMTP connection. It was also not resetting its
4341 memory on STARTTLS and an internal HELO.
4343 23. When Exim logs an SMTP synchronization error within a session, it now
4344 records whether PIPELINING has been advertised or not.
4346 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4347 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4348 rather than long int.
4350 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4352 26. Added the never_mail option to autoreply.
4358 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4359 crash if the getsockname() call failed; this can happen if a connection is
4360 closed very soon after it is established. The problem was simply in the
4361 order in which certain operations were done, causing Exim to try to write
4362 to the SMTP stream before it had set up the file descriptor. The bug has
4363 been fixed by making things happen in the correct order.
4369 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4370 before the connection was closed, thus losing the rejection response.
4372 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4373 some early Solaris releases, but causes trouble in current releases where
4374 socklen_t is defined.
4376 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4379 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4382 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4383 that releasing the top of it at the end releases what was used for sub-
4384 expansions (unless the block got too big). However, discard this block if
4385 the first thing is a variable or header, so that we can use its block when
4386 it is dynamic (useful for very large $message_headers, for example).
4388 6. Lookups now cache *every* query, not just the most recent. A new, separate
4389 store pool is used for this. It can be recovered when all lookup caches are
4390 flushed. Lookups now release memory at the end of their result strings.
4391 This has involved some general refactoring of the lookup sources.
4393 7. Some code has been added to the store_xxx() functions to reduce the amount
4394 of flapping under certain conditions.
4396 8. log_incoming_interface used to affect only the <= reception log lines. Now
4397 it causes the local interface and port to be added to several more SMTP log
4398 lines, for example "SMTP connection from", and rejection lines.
4400 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4402 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4404 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4405 could be overwritten at the end of the current message (or the start of a
4406 new message if it was set in a HELO ACL). The value is now preserved for
4407 the duration of the SMTP connection.
4409 12. If a transport had a headers_rewrite setting, and a matching header line
4410 contained an unqualified address, that address was qualified, even if it
4411 did not match any rewriting rules. The underlying bug was that the values
4412 of the flags that permit the existence of unqualified sender and recipient
4413 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4414 non-local messages, and by -bnq for local messages) were not being
4415 preserved with the message after it was received.
4417 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4418 "next input=" as part of the text comprising the host identity instead of
4419 the correct text. The code was using the same buffer for two different
4420 strings. However, depending on which order the printing function evaluated
4421 its arguments, the bug did not always show up. Under Linux, for example, my
4422 test suite worked just fine.
4424 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4425 doesn't work with some older versions of Perl. It has been changed to "my",
4426 which in any case is probably the better facility to use.
4428 15. A really picky compiler found some instances of statements for creating
4429 error messages that either had too many or two few arguments for the format
4432 16. The size of the buffer for calls to the DNS resolver has been increased
4433 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4434 for addresses that have a lot of PTR records. This alleviates a problem; it
4435 does not fully solve it.
4437 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4438 buffer now truncates the list and logs the incident, which is the same
4439 action as happens when Exim is looking up a host name and its aliases.
4440 Previously in this situation something unpredictable would happen;
4441 sometimes it was "internal error: store_reset failed".
4443 18. If a server dropped the connection unexpectedly when an Exim client was
4444 using GnuTLS and trying to read a response, the client delivery process
4445 crashed while trying to generate an error log message.
4447 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4448 string, for example:
4450 warn message = H1: something\nH2: something
4452 the text was added as a single header line from Exim's point of view
4453 though it ended up OK in the delivered message. However, searching for the
4454 second and subsequent header lines using $h_h2: did not work. This has been
4455 fixed. Similarly, if a system filter added multiple headers in this way,
4456 the routers could not see them.
4458 20. Expanded the error message when iplsearch is called with an invalid key to
4459 suggest using net-iplsearch in a host list.
4461 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4462 ACLs are no longer actually imposed (and a message to that effect is
4465 22. If a "gecos" field in a passwd entry contained escaped characters, in
4466 particular, if it contained a \" sequence, Exim got it wrong when building
4467 a From: or a Sender: header from that name. A second bug also caused
4468 incorrect handling when an unquoted " was present following a character
4469 that needed quoting.
4471 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4472 was not being matched caselessly.
4474 24. Arranged for all hyphens in the exim.8 source to be escaped with
4477 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4478 properly. Recipient callout cache records were still being keyed to include
4479 the sender, even when use_sender was set false. This led to far more
4480 callouts that were necessary. The sender is no longer included in the key
4481 when use_sender is false.
4483 26. Added "control = submission" modifier to ACLs.
4485 27. Added the ${base62d: operator to decode base 62 numbers.
4487 28. dnsdb lookups can now access SRV records.
4489 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4490 the configuration file.
4492 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4493 (-v) mode. This makes the output for a verbose queue run more intelligible.
4495 31. Added a use_postmaster feature to recipient callouts.
4497 32. Added the $body_zerocount variable, containing the number of binary zero
4498 bytes in the message body.
4500 33. The time of last modification of the "new" subdirectory is now used as the
4501 "mailbox time last read" when there is a quota error for a maildir
4504 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4506 35. Added +ignore_unknown as a special item in host lists.
4508 36. Code for decoding IPv6 addresses in host lists is now included, even if
4509 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4510 address was recognized as an IP address, but was then not correctly decoded
4511 into binary, causing unexpected and incorrect effects when compared with
4518 1. Very minor rewording of debugging text in manualroute to say "list of
4519 hosts" instead of "hostlist".
4521 2. If verify=header_syntax was set, and a header line with an unqualified
4522 address (no domain) and a large number of spaces between the end of the
4523 name and the colon was received, the reception process suffered a buffer
4524 overflow, and (when I tested it) crashed. This was caused by some obsolete
4525 code that should have been removed. The fix is to remove it!
4527 3. When running in the test harness, delay a bit after writing a bounce
4528 message to get a bit more predictability in the log output.
4530 4. Added a call to search_tidyup() just before forking a reception process. In
4531 theory, someone could use a lookup in the expansion of smtp_accept_max_
4532 per_host which, without the tidyup, could leave open a database connection.
4534 5. Added the variables $recipient_data and $sender_data which get set from a
4535 lookup success in an ACL "recipients" or "senders" condition, or a router
4536 "senders" option, similar to $domain_data and $local_part_data.
4538 6. Moved the writing of debug_print from before to after the "senders" test
4541 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4542 problems for message scanning, either using a data ACL, or using
4543 local_scan() because the Received: header was not generated till after they
4544 were called (in order to set the time as the time of reception completion).
4545 I have revised the way this works. The header is now generated after the
4546 body is received, but before the ACL or local_scan() are called. After they
4547 are run, the timestamp in the header is updated.
4553 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4554 before starting a queue runner without re-exec. This happened only when
4555 deliver_drop_privilege was set or when the Exim user was set to root. The
4556 effect of the bug was that timeouts during subsequent deliveries caused
4557 crashes instead of being properly handled. The handler is now left at its
4558 default (and expected) setting.
4560 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4561 message, again when deliver_drop_privilege is set or Exim is run as root.
4562 The bug described in (1) was not present in this case, but the tidying up
4563 of the other signals was missing. I have made the two cases consistent.
4565 3. The ignore_target_hosts setting on a manualroute router was being ignored
4566 for hosts that were looked up using the /MX notation.
4568 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4571 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4572 operated on the sender address. After changing the $sender_address to <>
4573 for the sender address verify, Exim was re-instated it as the original
4574 (before rewriting) address, but remembering that it had rewritten it, so it
4575 wasn't rewriting it again. This bug also had the effect of breaking the
4576 sender address verification caching when the sender address was rewritten.
4578 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4579 This has been changed so that if the ip literal address matches
4580 ignore_target_hosts, the router declines.
4582 7. Added expansion conditions match_domain, match_address, and match_local_
4583 part (NOT match_host).
4585 8. The placeholder for the Received: header didn't have a length field set.
4587 9. Added code to Exim itself and to exim_lock to test for a specific race
4588 condition that could lead to file corruption when using MBX delivery. The
4589 issue is with the lockfile that is created in /tmp. If this file is removed
4590 after a process has opened it but before that process has acquired a lock,
4591 there is the potential for a second process to recreate the file and also
4592 acquire a lock. This could lead to two Exim processes writing to the file
4593 at the same time. The added code performs the same test as UW imapd; it
4594 checks after acquiring the lock that its file descriptor still refers to
4595 the same named file.
4597 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4598 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4601 11. Added the smtp_active_hostname option. If used, this will typically be made
4602 to depend on the incoming interface address. Because $interface_address is
4603 not set up until the daemon has forked a reception process, error responses
4604 that can happen earlier (such as "too many connections") no longer contain
4607 12. If an expansion in a condition on a "warn" statement fails because a lookup
4608 defers, the "warn" statement is abandoned, and the next ACL statement is
4609 processed. Previously this caused the whole ACL to be aborted.
4611 13. Added the iplsearch lookup type.
4613 14. Added ident_timeout as a log selector.
4615 15. Added tls_certificate_verified as a log selector.
4617 16. Added a global option tls_require_ciphers (compare the smtp transport
4618 option of the same name). This controls incoming TLS connections.
4620 17. I finally figured out how to make tls_require_ciphers do a similar thing
4621 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4622 before starting the TLS session.
4624 18. Tabs are now shown as \t in -bP output.
4626 19. If the log selector return_path_on_delivery was set, Exim crashed when
4627 bouncing a message because it had too many Received: header lines.
4629 20. If two routers both had headers_remove settings, and the first one included
4630 a superfluous trailing colon, the final name in the first list and the
4631 first name in the second list were incorrectly joined into one item (with a
4632 colon in the middle).
4638 1. Added -C and -D options to the exinext utility, mainly to make it easier
4639 to include in the automated testing, but these could be helpful when
4640 multiple configurations are in use.
4642 2. The exinext utility was not formatting the output nicely when there was
4643 an alternate port involved in the retry record key, nor when there was a
4644 message id as well (for retries that were specific to a specific message
4645 and a specific host). It was also confused by IPv6 addresses, because of
4646 the additional colons they contain. I have fixed the IPv4 problem, and
4647 patched it up to do a reasonable job for IPv6.
4649 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4650 delivery, the log line now contains "pipelined" if PIPELINING was used.
4652 4. An SMTP transport process used to panic and die if the bind() call to set
4653 an explicit outgoing interface failed. This has been changed; it is now
4654 treated in the same way as a connect() failure.
4656 5. A reference to $sender_host_name in the part of a conditional expansion
4657 that was being skipped was still causing a DNS lookup. This no longer
4660 6. The def: expansion condition was not recognizing references to header lines
4661 that used bh_ and bheader_.
4663 7. Added the _cache feature to named lists.
4665 8. The code for checking quota_filecount in the appendfile transport was
4666 allowing one more file than it should have been.
4668 9. For compatibility with Sendmail, the command line option
4676 and sets the incoming protocol and host name (for trusted callers). The
4677 host name and its colon can be omitted when only the protocol is to be set.
4678 Note the Exim already has two private options, -pd and -ps, that refer to
4679 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4680 "s", but I don't think that's a major issue.
4682 10. A number of refactoring changes to the code, none of which should affect
4685 (a) The number of logging options was getting close to filling up the
4686 32-bit word that was used as a bit map. I have split them into two classes:
4687 those that are passed in the argument to log_write(), and those that are
4688 only ever tested independently outside of that function. These are now in
4689 separate 32-bit words, so there is plenty of room for expansion again.
4690 There is no change in the user interface or the logging behaviour.
4692 (b) When building, for example, log lines, the code previously used a
4693 macro that called string_cat() twice, in order to add two strings. This is
4694 not really sufficiently general. Furthermore, there was one instance where
4695 it was actually wrong because one of the argument was used twice, and in
4696 one call a function was used. (As it happened, calling the function twice
4697 did not affect the overall behaviour.) The macro has been replaced by a
4698 function that can join an arbitrary number of extra strings onto a growing
4701 (c) The code for expansion conditions now uses a table and a binary chop
4702 instead of a serial search (which was left over from when there were very
4703 few conditions). Also, it now recognizes conditions like "pam" even when
4704 the relevant support is not compiled in: a suitably worded error message is
4705 given if an attempt is made to use such a condition.
4707 11. Added ${time_interval:xxxxx}.
4709 12. A bug was causing one of the ddress fields not to be passed back correctly
4710 from remote delivery subprocesses. The field in question was not being
4711 subsequently used, so this caused to problems in practice.
4713 13. Added new log selectors queue_time and deliver_time.
4715 14. Might have fixed a bug in maildirsizefile handling that threw up
4716 "unexpected character" debug warnings, and recalculated the data
4717 unnecessarily. In any case, I expanded the warning message to give more
4720 15. Added the message "Restricted characters in address" to the statements in
4721 the default ACL that block characters like @ and % in local parts.
4723 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4724 Three changes have been made:
4726 (a) There was a serious bug; a negative response to MAIL caused the whole
4727 recipient domain to be cached as invalid, thereby blocking all messages
4728 to all local parts at the same domain, from all senders. This bug has
4729 been fixed. The domain is no longer cached after a negative response to
4730 MAIL if the sender used is not empty.
4732 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4735 (c) A new callout option, "use_sender" has been added for people who want
4736 the modified behaviour.
4742 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4745 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4746 indeed breaks things for older releases.
4748 3. Added additional logging to the case where there is a problem reading data
4749 from a filter that is running in a subprocess using a pipe, in order to
4750 try to track down a specific problem.
4752 4. Testing facility fudge: when running in the test harness and attempting
4753 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4754 getting "No route to host". Convert this to a timeout.
4756 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4759 6. Some OS don't have socklen_t but use size_t instead. This affects the
4760 fifth argument of getsockopt() amongst other things. This is now
4761 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4762 can be set for individual OS. I have set it for SunOS5, OSF1, and
4763 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4764 some earlier ones do not.
4766 7. Change 4.30/15 was not doing the test caselessly.
4768 8. The standard form for an IPv6 address literal was being rejected by address
4769 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4770 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4771 this, as well as the form without the "IPv6" on the front (but only when
4772 address literals are enabled, of course).
4774 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4776 10. Exim crashed if a message with an empty sender address specified by -f
4777 encountered a router with an errors_to setting. This could be provoked only
4778 by a command such as
4782 where an empty string was supplied; "<>" did not hit this bug.
4784 11. Installed PCRE release 4.5.
4786 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4787 remained set. It is now erased.
4789 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4790 times from message ids (which are base 36 rather than the normal 62).
4792 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4793 were being counted as actual protocol errors, and logged if the log
4794 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4795 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4796 and DATA following a set of rejected RCPTs do not count as protocol errors.
4797 In other words, Exim assumes they were pipelined, though this may not
4798 actually be the case. Of course, in all cases the client gets an
4799 appropriate error code.
4801 15. If a lookup fails in an ACL condition, a message about the failure may
4802 be available; it is used if testing the ACL cannot continue, because most
4803 such messages specify what the cause of the deferral is. However, some
4804 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4805 that caused an old message to be retained and used if a later statement
4806 caused a defer, replacing the real cause of the deferral.
4808 16. If an IP address had so many PTR records that the DNS lookup buffer
4809 was not large enough to hold them, Exim could crash while trying to process
4810 the truncated data. It now detects and logs this case.
4812 17. Further to 4.21/58, another change has been made: if (and only if) the
4813 first line of a message (the first header line) ends with CRLF, a bare LF
4814 in a subsequent header line has a space inserted after it, so as not to
4815 terminate the header.
4817 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
4818 unnecessarily, used atoi() instead of strtol(), and didn't check the
4819 termination when getting file sizes from file names by regex.
4821 19. Completely re-implemented the support for maildirsize files, in the light
4822 of a number of problems with the previous contributed implementation
4823 (4.30/29). In particular:
4825 . If the quota is zero, the maildirsize file is maintained, but no quota is
4828 . If the maildir directory does not exist, it is created before any attempt
4829 to write a maildirsize file.
4831 . The quota value in the file is just a cache; if the quota is changed in
4832 the transport, the new value overrides.
4834 . A regular expression is available for excluding directories from the
4837 20. The autoreply transport checks the characters in options that define the
4838 message's headers; it allows continued headers, but it was checking with
4839 isspace() after an embedded newline instead of explicitly looking for a
4842 21. If all the "regular" hosts to which an address was routed had passed their
4843 expiry times, and had not reached their retry times, the address was
4844 bounced, even if fallback hosts were defined. Now Exim should go on to try
4847 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
4848 equivalent code in the SMTP transport. Some hosts send humungous responses
4849 to HELO/EHLO, more than 1024 it seems.
4851 23. Refactoring: code in filter.c used (void *) for "any old type" but this
4852 gives compiler warnings in some environments. I've now done it "properly",
4855 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
4856 (because of problems with the built-in one) was declared to return uschar *
4857 instead of char *, causing compiler failure.
4859 25. Fixed a file descriptor leak when processing alias/forward files.
4861 26. Fixed a minor format string issue in dbfn.c.
4863 27. Typo in exim.c: ("dmbnz" for "dbmnz").
4865 28. If a filter file refered to $h_xxx or $message_headers, and the headers
4866 contained RFC 2047 "words", Exim's memory could, under certain conditions,
4869 29. When a sender address is verified, it is cached, to save repeating the test
4870 when there is more than one recipient in a message. However, when the
4871 verification involves a callout, it is possible for different callout
4872 options to be set for different recipients. It is too complicated to keep
4873 track of this in the cache, so now Exim always runs a verification when a
4874 callout is required, relying on the callout cache for the optimization.
4875 The overhead is duplication of the address routing, but this should not be
4878 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
4879 to be verified with callout=postmaster, and the main callout worked but the
4880 postmaster check failed, the verification correctly failed. However, if a
4881 subsequent RCPT command asked for sender verification *without* the
4882 postmaster check, incorrect caching caused this verification also to fail,
4885 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
4886 it was not caching the DNS options (qualify_single, search_parents) that
4887 were used when the lookup failed. A subsequent lookup with different
4888 options therefore always gave the same answer, though there were cases
4889 where it should not have. (Example: a "domains = !$mx_any" option on a
4890 dnslookup router: the "domains" option is always processed without any
4891 widening, but the router might have qualify_single set.) Now Exim uses the
4892 cached value only when the same options are set.
4894 32. Added John Jetmore's "exipick" utility to the distribution.
4896 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
4897 than a timeout (e.g. a certificate is required, and is not provided), an
4898 Exim server now closes the connection immediately. Previously it waited for
4899 the client to close - but if the client is SSL, it seems that they each
4900 wait for each other, leading to a delay before one of them times out.
4902 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
4903 maintained 0.8.x compatibility because I don't think many are using it, and
4904 it is clearly obsolete.
4906 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
4909 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
4910 client certificate was expired. A simple patch fixes this, though I don't
4911 understand the full logic of why the verify callback is called multiple
4914 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
4915 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
4916 which causes problems with some clients (such as the Certicom SSL Plus
4917 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
4918 disables the coutermeasure allowing Eudora to connect."
4920 38. Exim was not checking that a write() to a log file succeeded. This could
4921 lead to Bad Things if a log got too big, in particular if it hit a file
4922 size limit. Exim now panics and dies if it cannot write to a log file, just
4923 as it does if it cannot open a log file.
4925 39. Modified OS/Makefile-Linux so that it now contains
4927 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
4929 The two -D definitions ensure that Exim is compiled with large file
4930 support, which makes it possible to handle log files that are bigger than
4933 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
4934 instance) a domain was checked against a named list that involved a lookup,
4935 causing $domain_data to be set, then another domain was checked against the
4936 same list, then the first domain was re-checked, the value of $domain_data
4937 after the final check could be wrong. In particular, if the second check
4938 failed, it could be set empty. This bug probably also applied to
4941 41. The strip_trailing_dot option was not being applied to the address given
4942 with the -f command-line option.
4944 42. The code for reading a message's header from the spool was incrementing
4945 $received_count, but never initializing it. This meant that the value was
4946 incorrect (doubled) while delivering a message in the same process in which
4947 it was received. In the most common configuration of Exim, this never
4948 happens - a fresh exec is done - but it can happen when
4949 deliver_drop_privilege is set.
4951 43. When Exim logs an SMTP synchronization error - client data sent too soon -
4952 it now includes up to 150 characters of the unexpected data in the log
4955 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
4956 and building data strings. The size of both of these buffers was 10 000
4957 bytes - far larger than anybody would *ever* want, thought I. Needless to
4958 say, somebody hit the limit. I have increased the maximum line length to
4959 20 000 and the maximum data length of concatenated lines to 100 000. I have
4960 also fixed two bugs, because there was no checking on these buffers. Tsk,
4961 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
4962 buffer is too small.
4964 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
4965 lsearch lookups. Now it does.
4967 46. When parsing a route_list item in a manualroute router, a fixed-length
4968 buffer was used for the list of hosts. I made this 1024 bytes long,
4969 thinking that nobody would ever have a list of hosts that long. Wrong.
4970 Somebody had a whole pile of complicated expansion conditions, and the
4971 string was silently truncated, leading to an expansion error. It turns out
4972 that it is easier to change to an unlimited length (owing to other changes
4973 that have happened since this code was originally written) than to build
4974 structure for giving a limitation error. The length of the item that
4975 expands into the list of hosts is now unlimited.
4977 47. The lsearch lookup could not handle data where the length of text line was
4978 more than 4095 characters. Such lines were truncated, leading to shortened
4979 data being returned. It should now handle lines of any length.
4981 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
4982 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
4985 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
4986 replacing strings such as BIN_DIRECTORY in a source file: the replacement
4987 no longer happens in comment lines. A list of replacements is now placed
4988 at the head of all of the source files, except those whose only change is
4989 to replace PERL_COMMAND in the very first #! line.
4991 50. Replaced the slow insertion sort in queue.c, for sorting the list of
4992 messages on the queue, with a bottom-up merge sort, using code contributed
4993 by Michael Haardt. This should make operations like -bp somewhat faster on
4994 large queues. It won't affect queue runners, except when queue_run_in_order
4997 51. Installed eximstats 1.31 in the distribution.
4999 52. Added support for SRV lookups to the dnslookup router.
5001 53. If an ACL referred to $message_body or $message_body_end, the value was not
5002 reset for any messages that followed in the same SMTP session.
5004 54. The store-handling optimization for building very long strings was not
5005 differentiating between the different store pools. I don't think this
5006 actually made any difference in practice, but I've tidied it.
5008 55. While running the routers to verify a sender address, $sender_address
5009 was still set to the sender address. This is wrong, because when routing to
5010 send a bounce to the sender, it would be empty. Therefore, I have changed
5011 it so that, while verifying a sender address, $sender_address is set to <>.
5012 (There is no change to what happens when verifying a recipient address.)
5014 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
5015 target A or AAAA records (if not already returned) without resetting the
5016 qualify_single or search_parents options of the DNS resolver. These are
5017 inappropriate in this case because the targets of MX and SRV records must
5018 be FQDNs. A broken DNS record could cause trouble if it happened to have a
5019 target that, when qualified, matched something in the local domain. These
5020 two options are now turned off when doing these lookups.
5022 57. It seems that at least some releases of Reiserfs (which does not have the
5023 concept of a fixed number of inodes) returns zero and not -1 for the
5024 number of available inodes. This interacted badly with check_spool_inodes,
5025 which assumed that -1 was the "no such thing" setting. What I have done is
5026 to check that the total number of inodes is greater than zero before doing
5027 the test of how many are available.
5029 58. When a "warn" ACL statement has a log_message modifier, the message is
5030 remembered, and not repeated. This is to avoid a lot of repetition when a
5031 message has many recipients that cause the same warning to be written.
5032 Howewer, Exim was preserving the list of already written lines for an
5033 entire SMTP session, which doesn't seem right. The memory is now reset if a
5034 new message is started.
5036 59. The "rewrite" debugging flag was not showing the result of rewriting in the
5037 debugging output unless log_rewrite was also set.
5039 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
5040 of (int)(handle) when we know that handle contains (void *)(-1).
5042 61. The Exim daemon panic-logs an error return when it closes the incoming
5043 connection. However "connection reset by peer" seems to be common, and
5044 isn't really an error worthy of noting specially, so that particular error
5047 62. When Exim is trying to find all the local interfaces, it used to panic and
5048 die if the ioctl to get the interface flags failed. However, it seems that
5049 on at least one OS (Solaris 9) it is possible to have an interface that is
5050 included in the list of interfaces, but for which you get a failure error
5051 for this call. This happens when the interface is not "plumbed" into a
5052 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
5053 failure of the "get flags" call assumes that the interface is down.
5055 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
5056 makes life easier for people who are doing arithmetic on fields extracted
5057 from dates, where you often get leading zeros that should not be
5058 interpreted as octal.
5060 64. Added qualify_domain to the redirect router, to override the global
5063 65. If a pathologically long header line contained very many addresses (the
5064 report of this problem mentioned 10 000) and each of them was rewritten,
5065 Exim could use up a very large amount of memory. (It kept on making new
5066 copies of the header line as it rewrote, and never released the old ones.)
5067 At the expense of a bit more processing, the header rewriting function has
5068 been changed so that it no longer eats memory in this way.
5070 66. The generation of the Received: header has been moved from the time that a
5071 message starts to be received, to the time that it finishes. The timestamp
5072 in the Received: header should now be very close to that of the <= log
5073 line. There are two side-effects of this change:
5075 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
5076 logged header lines no longer include the local Received: line, because
5077 it has not yet been created. The same applies to a copy of the message
5078 that is returned to a non-SMTP sender when a message is rejected.
5080 (b) When a filter file is tested using -bf, no additional Received: header
5081 is added to the test message. After some thought, I decided that this
5084 This change does not affect the value of $received_for. It is still set
5085 after address rewriting, but before local_scan() is called.
5087 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
5089 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
5090 gave an unhelpful panic error message, and a defer error. I have managed to
5091 change this behaviour so that it now rejects any supplied certificate,
5092 which seems right, as the list of acceptable certificates is empty.
5094 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
5095 gave an unhelpful defer error. I have not managed to make this reject any
5096 supplied certificates, but the error message it gives is "no certificate
5097 supplied", which is not helpful.
5099 70. exigrep's output now also includes lines that are not associated with any
5100 message, but which match the given pattern. Implemented by a patch from
5101 Martin Sluka, which also tidied up the Perl a bit.
5103 71. Recipient callout verification, like sender verification, was using <> in
5104 the MAIL FROM command. This isn't really the right thing, since the actual
5105 sender may affect whether the remote host accepts the recipient or not. I
5106 have changed it to use the actual sender in the callout; this means that
5107 the cache record is now keyed on a recipient/sender pair, not just the
5108 recipient address. There doesn't seem to be a real danger of callout loops,
5109 since a callout by the remote host to check the sender would use <>.
5110 [SEE ABOVE: changed after hitting problems.]
5112 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
5113 temporary errors. However, in the case of such a code being given after
5114 the end of a data transmission (i.e. after ".") Exim was failing to write
5115 a retry record for the message. (Yes, there was some broken host that was
5116 actually sending 8xx at this point.)
5118 73. An unknown lookup type in a host list could cause Exim to panic-die when
5119 the list was checked. (An example that provoked this was putting <; in the
5120 middle of a list instead of at the start.) If this happened during a DATA
5121 ACL check, a -D file could be left lying around. This kind of configuration
5122 error no longer causes Exim to die; instead it causes a defer errror. The
5123 incident is still logged to the main and panic logs.
5125 74. Buglet left over from Exim 3 conversion. The message "too many messages
5126 in one connection" was written to the rejectlog but not the mainlog, except
5127 when address rewriting (yes!) was being logged.
5129 75. Added write_rejectlog option.
5131 76. When a system filter was run not as root (that is, when system_filter_user
5132 was set), the values of the $n variables were not being returned to the
5133 main process; thus, they were not subsequently available in the $sn
5136 77. Added +return_path_on_delivery log selector.
5138 78. A connection timeout was being treated differently from recipients deferred
5139 when testing hosts_max_try with a message that was older than the host's
5140 retry timeout. (The host should not be counted, thus allowing all hosts to
5141 be tried at least once before bouncing.) This may have been the cause of an
5142 occasionally reported bug whereby a message would remain on the queue
5143 longer than the retry timeout, but would be bounced if a delivery was
5144 forced. I say "may" because I never totally pinned down the problem;
5145 setting up timeout/retry tests is difficult. See also the next item.
5147 79. The ultimate address timeout was not being applied to errors that involved
5148 a combination of host plus message (for example, a timeout on a MAIL
5149 command). When an address resolved to a number of possible hosts, and they
5150 were not all tried for each delivery (e.g. because of hosts_max_try), a
5151 message could remain on the queue longer than the retry timeout.
5153 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5156 81. Fixed an obscure SMTP outgoing bug which required at least the following
5157 conditions: (a) there was another message waiting for the same server;
5158 (b) the server returned 5xx to all RCPT commands in the first message so
5159 that the message was not completed; (c) the server dropped the connection
5160 or gave a negative response to the RSET that Exim sends to abort the
5161 transaction. The observed case was a dropped connection after DATA that had
5162 been sent in pipelining mode. That is, the server had advertised PIPELINING
5163 but was not implementing it correctly. The effect of the bug was incorrect
5164 behaviour, such as trying another host, and this could lead to a crash.
5170 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5171 and daemon.c were passed as pointers to ints; they should have been
5172 pointers to socklen_t variables (which are typically unsigned ints).
5174 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5177 3. Fixed a really odd bug that affected only the testing scheme; patching a
5178 certain fixed string in the binary changed the value of another string that
5179 happened to be identical to the end of the original first string.
5181 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5182 name", it returns that address as the IP address. On some operating
5183 systems (e.g. Solaris), it also passes back the IP address string as the
5184 "host name". However, on others (e.g. Linux), it passes back an empty
5185 string. Exim wasn't checking for this, and was changing the host name to an
5186 empty string, assuming it had been canonicized.
5188 5. Although rare, it is permitted to have more than one PTR record for a given
5189 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5190 all the names associated with an address, because they do in Solaris.
5191 However, it seems that they do not in Linux for data that comes from the
5192 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5193 I found this out when I moved to a new Linux workstation and tried to run
5194 the Exim test suite.
5196 To get round this problem I have changed the code so that it now does its
5197 own call to the DNS to look up PTR records when searching for a host name.
5198 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5199 addresses that are only in /etc/hosts are still found.
5201 This behaviour is, however, controlled by an option called host_lookup_
5202 order, which defaults to "bydns:byaddr". If people want to use the other
5203 order, or indeed, just use one or the other means of lookup, they can
5204 specify it in this variable.
5206 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5207 some operating systems, this comes back from gethostbyaddr() as an empty
5208 string, and this is what Exim used to test for. However, it seems that in
5209 other systems, "." is yielded. Exim now tests for this case too.
5211 7. The values of check_spool_space and check_log_space are now held internally
5212 as a number of kilobytes instead of an absolute number of bytes. If a
5213 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5214 kilobyte. This means that much larger values can be stored.
5216 8. Exim monitor: an attempt to get the action menu when not actually pointing
5217 at a message produces an empty menu entitled "No message selected". This
5218 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5219 no entries in it ("Shell widget menu has zero width and/or height"). So I
5220 have added a single, blank menu entry in this case.
5222 9. Added ${quote_local_part.
5224 10. MIME decoding is now applied to the contents of Subject: header lines when
5227 11. Now that a reference to $sender_host_address automatically causes a reverse
5228 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5229 host lookup before query-style lookups in lists that might use this
5230 variable. This has therefore been abolished, and the "net-" prefix is no
5231 longer necessary for query-style lookups.
5233 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5234 have been a typo for LFLAGS, so it has been changed.
5236 13. The install script calls Exim with "-C /dev/null" in order to find the
5237 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5238 to be output. Howeve, since Exim outputs its version number before the
5239 error, it didn't break the script. It just looked ugly. I fixed this by
5240 always allowing "-C /dev/null" if the caller is root.
5242 14. Ignore overlarge ACL variable number when reading spool file - insurance
5243 against a later release with more variables having written the file.
5245 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5246 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5247 this, as well as the form without the "IPv6" on the front.
5249 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5250 OS/Makefile-Darwin file.
5252 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5253 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5255 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5256 variable. However, some OS use ints for inodes. I've added cast to long int
5257 to get rid of the compiler warning.
5259 19. I had forgotten to lock out "/../" in configuration file names when
5260 ALT_CONFIG_PREFIX was set.
5262 20. Routers used for verification do not need to specify transports. However,
5263 if such a router generated a host list, and callout was configured, Exim
5264 crashed, because it could not find a port number from the (non-existent)
5265 transport. It now assumes port 25 in this circumstance.
5267 21. Added the -t option to exigrep.
5269 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5270 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5271 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5272 them is set, LOOKUP_LSEARCH is forced.
5274 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5276 24. Added sender and host information to the "rejected by local_scan()" log
5277 line; previously there was no indication of these.
5279 25. Added .include_if_exists.
5281 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5282 Linux. It turns out that not all file systems support this. Apparently some
5283 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5284 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5285 not supported on the file descriptor, is now ignored when Exim is trying to
5286 sync a directory. This applies only to Linux.
5288 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5290 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5291 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5294 29. Added support for maildirsize files from supplied patch (modified a bit).
5296 30. The use of :fail: followed by an empty string could lead Exim to respond to
5297 sender verification failures with (e.g.):
5299 550 Verification failed for <xxx>
5300 550 Sender verify failed
5302 where the first response line was missing the '-' that indicates it is not
5303 the final line of the response.
5305 31. The loop for finding the name of the user that called Exim had a hardwired
5306 limit of 10; it now uses the value of finduser_retries, which is used for
5307 all other user lookups.
5309 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5312 33. Exim was neglecting to zero errno before one call of strtol() when
5313 expanding a string and expecting an integer value. On some systems this
5314 resulted in spurious "integer overflow" errors. Also, it was casting the
5315 result into an int without checking.
5317 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5318 did not work. The code looks as if it has *never* worked, though it appears
5319 to have been documented since at least releast 1.62. I have made it work.
5321 35. The "timeout_DNS" error in retry rules, also documented since at least
5322 1.62, also never worked. As it isn't clear exactly what this means, and
5323 clearly it isn't a major issue, I have abolished the feature by treating it
5324 as "timeout", and writing a warning to the main and panic logs.
5326 36. The display of retry rules for -brt wasn't always showing the error code
5329 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5330 timeout_connect_A, timeout_connect_MX.
5332 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5333 to the empty sender.
5335 39. The daemon was not analysing the content of -oX till after it had closed
5336 stderr and disconnected from the controlling terminal. This meant that any
5337 syntax errors were only noted on the panic log, and the return code from
5338 the command was 0. By re-arranging the code a little, I've made the
5339 decoding happen first, so such errors now appear on stderr, and the return
5340 code is 1. However, the actual setting up of the sockets still happens in
5341 the disconnected process, so errors there are still only recorded on the
5344 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5345 connections (as happens on some IP stacks) was logged at start up time as
5346 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5347 it from "IPv6 and IPv4", which means that two separate sockets are being
5350 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5351 says whether AF_INET or AF_INET6 was passed as an argument.
5353 42. Exiwhat output was messed up when time zones were included in log
5356 43. Exiwhat now gives more information about the daemon's listening ports,
5357 and whether -tls-on-connect was used.
5359 44. The "port" option of the smtp transport is now expanded.
5361 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5362 silently ignored. Now an error message is written to the main and panic
5365 46. There's a new ACL modifier called "logwrite" which writes to a log file
5366 as soon as it is encountered.
5368 47. Added $local_user_uid and $local_user_gid at routing time.
5370 48. Exim crashed when trying to verify a sender address that was being
5373 49. Exim was recognizing only a space character after ".include". It now also
5374 recognizes a tab character.
5376 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5377 extracting the relevant information from the specification. The man page no
5378 longer contains scrambled data for the -d option, and I've added a section
5379 at the front about calling Exim under different names.
5381 51. Added "extra_headers" argument to the "mail" command in filter files.
5383 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5386 53. Installed eximstats 1.29.
5388 54. Added transport_filter_timeout as a generic transport option.
5390 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5391 Cc: header lines. This was required by RFC 822, but it not required by RFC
5394 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5395 incoming messages that did not have them. Now it does so only if the
5396 message originates locally, that is, if there is no associated remote host
5397 address. When Resent- header lines are present, this applies to the Resent-
5398 lines rather than the non-Resent- lines.
5400 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5401 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5403 58. Messages for configuration errors now include the name of the main
5404 configuration file - useful now that there may be more than one file in a
5405 list (.included file names were always shown).
5407 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5408 for those rare installations that do not start the daemon as root or run it
5409 setuid root. I've cut out the call to initgroups() if the daemon is not
5412 60. The Exim user and group can now be bound into the binary as text strings
5413 that are looked up at the start of Exim's processing.
5415 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5417 62. Added $mailstore_basename variable.
5419 63. Installed patch to sieve.c from Michael Haardt.
5421 64. When Exim failed to open the panic log after failing to open the main log,
5422 the original message it was trying to log was written to stderr and debug
5423 output, but if they were not available (the usual case in production), it
5424 was lost. Now it is written to syslog before the two lines that record the
5425 failures to open the logs.
5427 65. Users' Exim filters run in subprocesses under the user's uid. It is
5428 possible for a "deliver" command or an alias in a "personal" command to
5429 provoke an address rewrite. If logging of address rewriting is configured,
5430 this fails because the process is not running as root or exim. There may be
5431 a better way of dealing with this, but for the moment (because 4.30 needs
5432 to be released), I have disabled address rewrite logging when running a
5433 filter in a non-root, non-exim process.
5439 1. The buildconfig auxiliary program wasn't quoting the value set for
5440 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5441 not defined. This bug was masked in 4.22 by the effect that was fixed in
5444 2. Some messages that were rejected after a message id was allocated were
5445 shown as "incomplete" by exigrep. It no longer does this for messages that
5446 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5448 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5449 have allow_domain_literals set, the ID did not get logged in the <= line.
5450 Domain literals are now always recognized in Message-ID: header lines.
5452 4. The first argument for a ${extract expansion item is the key name or field
5453 number. Leading and trailing spaces in this item were not being ignored,
5454 causing some misleading effects.
5456 5. When deliver_drop_privilege was set, single queue runner processes started
5457 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5458 same command in the process it spins off) were not dropping privilege.
5460 6. When the daemon running as "exim" started a queue runner, it always
5461 re-executed Exim in the spun-off process. This is a waste of effort when
5462 deliver_drop_privilege is set. The new process now just calls the
5463 queue-runner function directly.
5469 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5472 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5473 ignored. Though the use of -oP was forcing the writing of a pid file, it
5474 was always written to the default place.
5476 3. If the message "no IP address found for host xxxx" is generated during
5477 incoming verification, it is now followed by identification of the incoming
5478 connection (so you can more easily find what provoked it).
5480 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5482 5. Added some features to "harden" Exim a bit more against certain attacks:
5484 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5485 be put in Local/Makefile. This is like the never_users runtime option,
5486 but it cannot be overridden. The default setting is "root".
5488 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5489 prefix string with which any file named in a -C command line option
5492 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5493 is retained for -C and -D only if the caller of Exim is root. Without
5494 it, the exim user may also use -C and -D and retain privilege.
5496 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5497 command line option is disabled.
5499 6. Macro names set by the -D option must start with an upper case letter, just
5500 like macro names defined in the configuration file.
5502 7. Added "dereference=" facility to LDAP.
5504 8. Two instances of the typo "uknown" in the source files are fixed.
5506 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5507 the Configure-Makefile script screwed up while processing it.
5509 10. Incorporated PCRE 4.4.
5511 11. The SMTP synchronization check was not operating right at the start of an
5512 SMTP session. For example, it could not catch a HELO sent before the client
5513 waited for the greeting. There is now a check for outstanding input at the
5514 point when the greeting is written. Because of the duplex, asynchronous
5515 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5516 way, but not yet received, when the check is performed.
5518 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5519 on TCP/IP sockets, because this apparently causes some broken clients to
5522 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5523 unchanged) from the Cygwin maintainer.
5525 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5526 was supported instead of testing for mbx. Effectively a typo.
5528 15. The spa authenticator server code was not checking that the input it
5529 received was valid base64.
5531 16. The debug output line for the "set" modifier in ACLs was not showing the
5532 name of the variable that was being set.
5534 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5536 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5537 lookup on its own. Something else was needed to trigger the lookup. For
5538 example, a match in host_lookup or the need for a host name in a host list.
5539 Now, if $sender_host_name is referenced and the host name has not yet been
5540 looked up, a lookup is performed. If the lookup fails, the variable remains
5541 empty, and $host_lookup_failed is set to "1".
5543 19. Added "eqi" as a case-independent comparison operator.
5545 20. The saslauthd authentication condition could segfault if neither service
5546 nor realm was specified.
5548 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5549 error message that was logged was misleading, and incoming SMTP
5550 connections were dropped. The message is now more accurate, and temporary
5551 errors are given to SMTP connections.
5553 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5554 (except RSET) with a 421 error, until QUIT is received. However, it was
5555 failing to send a response to QUIT.
5557 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5558 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5559 ACL is now run after the helo_try_verify_hosts code.
5561 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5562 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5563 case-independent, so other case variants are also recognized). Apparently
5564 some systems use these upper case variants.
5566 25. If more than two messages were waiting for the same host, and a transport
5567 filter was specified for the transport, Exim sent two messages over the
5568 same TCP/IP connection, and then failed with "socket operation on non-
5569 socket" when it tried to send the third.
5571 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5573 27. The extern definition of crypt16() in expand.c was not being excluded when
5574 the OS had its own crypt16() function.
5576 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5577 as a preferred synonym for return_size_limit, both as an option and as an
5580 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5582 30. Changed the default configuration ACL to relax the local part checking rule
5583 for addresses that are not in any local domains. For these addresses,
5584 slashes and pipe symbols are allowed within local parts, but the sequence
5585 /../ is explicitly forbidden.
5587 31. SPA server authentication was not clearing the challenge buffer before
5590 32. log_message in a "warn" ACL statement was writing to the reject log as
5591 well as to the main log, which contradicts the documentation and doesn't
5592 seem right (because no rejection is happening). So I have stopped it.
5594 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5595 However, I am unable to do any testing of this.
5597 34. Fixed an infelicity in the appendfile transport. When checking directories
5598 for a mailbox, to see if any needed to be created, it was accidentally
5599 using path names with one or more superfluous leading slashes; tracing
5600 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5602 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5603 contents are added to the log line that is written for every discarded
5604 recipient. (Previously a log_message setting was ignored.)
5606 36. The ${quote: operator now quotes the string if it is empty.
5608 37. The install script runs exim in order to find its version number. If for
5609 some reason other than non-existence or emptiness, which it checks, it
5610 could not run './exim', it was installing it with an empty version number,
5611 i.e. as "exim-". This error state is now caught, and the installation is
5614 38. An argument was missing from the function that creates an error message
5615 when Exim fails to connect to the socket for saslauthd authentication.
5616 This could cause Exim to crash, or give a corrupted message.
5618 39. Added isip, isip4, and isip6 to ${if conditions.
5620 40. The ACL variables $acl_xx are now saved with the message, and can be
5621 accessed later in routers, transports, and filters.
5623 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5624 strings in the file are not string-expanded.
5626 42. If a MAIL command specified a SIZE value that was too large to fit into an
5627 int variable, the check against message_size_limit failed. Such values are
5628 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5629 day this will have to be increased, but I don't think I want to be around
5630 when emails are that large.
5637 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5638 iconv() is not standard in FreeBSD.
5640 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5641 IPv6 enabled. The observed symptom was a segmentation fault on return from
5642 the function os_common_find_running_interfaces() in src/os.c.
5644 3. In the check_special_case() function in daemon.c I had used "errno" as an
5645 argument name, which causes warnings on some systems. This was basically a
5646 typo, since it was named "eno" in the comments!
5648 4. The code that waits for the clock to tick (at a resolution of some fraction
5649 of a second) so as to ensure message-id uniqueness was always waiting for
5650 at least one whole tick, when it could have waited for less. [This is
5651 almost certainly not relevant at current processor speeds, where it is
5652 unlikely to ever wait at all. But we try to future-proof.]
5654 5. The function that sleeps for a time interval that includes fractions of a
5655 second contained a race. It did not block SIGALRM between setting the
5656 timer, and suspending (a couple of lines later). If the interval was short
5657 and the sigsuspend() was delayed until after it had expired, the suspension
5658 never ended. On busy systems this could lead to processes getting stuck for
5661 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5662 process, before it forks any delivery processes. The open lookup caching
5663 mechanism meant that the open file or database connection was passed into
5664 the delivery process. The problem was that delivery processes always tidy
5665 up cached lookup data. This could cause a problem for the next delivery
5666 process started by the queue runner, because the external queue runner
5667 process does not know about the closure. So the next delivery process
5668 still has data in the lookup cache. In the case of a file lookup, there was
5669 no problem because closing a file descriptor in a subprocess doesn't affect
5670 the parent. However, if the lookup was caching a connection to a database,
5671 the connection was closed, and the second delivery process was likely to
5672 see errors such as "PGSQL: query failed: server closed the connection
5673 unexpectedly". The problem has been fixed by closing all cached lookups
5674 in a queue runner before running a delivery process.
5676 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5677 seem to have the "const" qualifier which it has on other OS. I've
5680 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5681 *of the same type* (client or server) with the same public name that an
5682 error should be diagnosed.
5684 9. When Exim looked up a host name for an IP address, but failed to find the
5685 original IP address when looking up the host name (a safety check), it
5686 output the message "<ip address> does not match any IP for NULL", which was
5687 confusing, to say the least. The bug was that the host name should have
5688 appeared instead of "NULL".
5690 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5691 user that is built into the binary, and the -C or -D options is used, root
5692 privilege is dropped before the configuration file is read. In addition,
5693 logging is switched to stderr instead of the normal log files. If the
5694 configuration then re-defines the Exim user, the unprivileged environment
5695 is probably not what is expected, so Exim logs a panic warning message (but
5698 However, if deliver_drop_privilege is set, the unprivileged state may well
5699 be exactly what is intended, so the warning has been cut out in that case,
5700 and Exim is allowed to try to write to its normal log files.
5706 1. smtp_return_error_details was not giving details for temporary sender
5707 or receiver verification errors.
5709 2. Diagnose a configuration error if two authenticators have the same public
5712 3. Exim used not to create the message log file for a message until the first
5713 delivery attempt. This could be confusing when incoming messages were held
5714 for policy or load reasons. The message log file is now created at the time
5715 the message is received, and an initial "Received" line is written to it.
5717 4. The automatically generated man page for command line options had a minor
5718 bug that caused no ill effects; however, a more serious problem was that
5719 the procedure for building the man page automatically didn't always
5720 operate. Consequently, release 4.20 contains an out-of-date version. This
5721 shouldn't happen again.
5723 5. When building Exim with embedded Perl support, the script that builds the
5724 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5725 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5727 6. The freeze_tell option was not being used for messages that were frozen on
5728 arrival, either by an ACL or by local_scan().
5730 7. Added the smtp_incomplete_transaction log selector.
5732 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5733 was accepting AUTH without a new EHLO.
5735 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5736 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5739 10. Logging of TCP/IP connections (when configured) now happens in the main
5740 daemon process instead of the child process, so that the TCP/IP connection
5741 count is more accurate (but it can never be perfect).
5743 11. The use of "drop" in a nested ACL was not being handled correctly in the
5744 outer ACL. Now, if condition failure induced by the nested "drop" causes
5745 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5746 or "require"), the connection is dropped.
5748 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5749 that yield "discard" can now be used with an "accept" or a "discard" verb,
5750 but an error is generated for any others (because I can't see a useful way
5751 to define what should happen).
5753 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5754 are now processed in the same way as lines in the Exim configuration file.
5755 In particular, continuation lines are supported.
5757 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5759 15. Added -ti meaning -t -i.
5761 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5762 domains, and warn by logging if others are found.
5764 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5765 returned from GIFCONF when Exim is trying to find the list of interfaces on
5766 a host. The code in os.c has been modified to copy each ifreq to an aligned
5767 structure in all cases.
5769 Also, in some cases, the returned ifreq's were being copied to a 'struct
5770 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5771 means the last couple of bytes of an IPv6 address could be chopped if the
5772 ifreq contained only a normal sockaddr (14 bytes storage).
5774 18. Named domain lists were not supported in the hosts_treat_as_local option.
5775 An entry such as +xxxx was not recognized, and was treated as a literal
5778 19. Ensure that header lines added by a DATA ACL are included in the reject log
5779 if the ACL subsequently rejects the message.
5781 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5782 MD5 (which is deprecated).
5784 21. When testing a filter file using -bf, Exim was writing a message when it
5785 took the sender from a "From " line in the message, but it was not doing so
5786 when it took $return_path from a Return-Path: header line. It now does.
5788 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5789 with a valid header line field name (a series of printing characters
5790 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5792 23. Changed "disc" in the source to "disk" to conform to the documentation and
5793 the book and for uniformity.
5795 24. Ignore Sendmail's -Ooption=value command line item.
5797 25. When execve() failed while trying to run a command in a pipe transport,
5798 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5799 could be confused with a return value of 69 from the command itself. This
5800 has been changed to 127, the value the shell returns if it is asked to run
5801 a non-existent command. The wording for the related log line suggests a
5802 non-existent command as the problem.
5804 26. If received_header_text expands to an empty string, do not add a Received:
5805 header line to the message. (Well, it adds a token one on the spool, but
5806 marks it "old" so that it doesn't get used or transmitted.)
5808 27. Installed eximstats 1.28 (addition of -nt option).
5810 28. There was no check for failure on the call to getsockname() in the daemon
5811 code. This can fail if there is a shortage of resources on the system, with
5812 ENOMEM, for example. A temporary error is now given on failure.
5814 29. Contrary to the C standard, it seems that in some environments, the
5815 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
5816 program. Exim now does this explicitly; it affects the formatting of
5817 timestamps using strftime().
5819 30. If exiqsumm was given junk data, it threw up some uninitialized variable
5820 complaints. I've now initialized all the variables, to avoid this.
5822 32. Header lines added by a system filter were not being "seen" during
5823 transport-time rewrites.
5825 33. The info_callback() function passed to OpenSSL is set up with type void
5826 (*)(SSL *, int, int), as described somewhere. However, when calling the
5827 function (actually a macro) that sets it up, the type void(*)() is
5828 expected. I've put in a cast to prevent warnings from picky compilers.
5830 34. If a DNS black list lookup found a CNAME record, but there were no A
5831 records associated with the domain it pointed at, Exim crashed.
5833 35. If a DNS black list lookup returned more than one A record, Exim ignored
5834 all but the first. It now scans all returned addresses if a particular IP
5835 value is being sought. In this situation, the contents of the
5836 $dnslist_value variable are a list of all the addresses, separated by a
5839 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
5840 to accept a host name and all its aliases if the forward lookup for any of
5841 them yielded the IP address of the incoming connection. Now it accepts only
5842 those names whose forward lookup yields the correct IP address. Any other
5843 names are discarded. This closes a loophole whereby a rogue DNS
5844 administrator could create reverse DNS records to break through a
5845 wildcarded host restriction in an ACL.
5847 37. If a user filter or a system filter that ran in a subprocess used any of
5848 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
5849 the wrong values were passed to the pipe command ($thisaddress had the
5850 value of $0, $0 had the value of $1, etc). This bug was introduced by
5851 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
5853 38. Improved the line breaking for long SMTP error messages from ACLs.
5854 Previously, if there was no break point between 40 and 75 characters, Exim
5855 left the rest of the message alone. Two changes have been made: (a) I've
5856 reduced the minimum length to 35 characters; (b) if it can't find a break
5857 point between 35 and 75 characters, it looks ahead and uses the first one
5858 that it finds. This may give the occasional overlong line, but at least the
5859 remaining text gets split now.
5861 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
5862 file descriptors might be low, and that setting 1000 would always raise it.
5863 It turns out that in some environments, the limit is already over 1000 and
5864 that lowering it causes trouble. So now Exim takes care not to decrease it.
5866 40. When delivering a message, the value of $return_path is set to $sender_
5867 address at the start of routing (routers may change the value). By an
5868 oversight, this default was not being set up when an address was tested by
5869 -bt or -bv, which affected the outcome if any router or filter referred to
5872 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
5873 log only when "message" or "log_message" are set. However, if one of the
5874 conditions was an address verification, or a call to a nested ACL, the
5875 messages generated by the underlying test were being passed through. This
5876 no longer happens. The underlying message is available in $acl_verify_
5877 message for both "message" and "log_message" expansions, so it can be
5878 passed through if needed.
5880 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
5881 new expansion $bh_ to give the encoded byte string without charset
5882 translation. Translation happens only if iconv() is available; HAVE_ICONV
5883 indicates this at build time. HEADERS_CHARSET gives the charset to
5884 translate to; headers_charset can change it in the configuration, and
5885 "headers charset" can change it in an individual filter file.
5887 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
5888 that creates RFC 2047 encoded "words" labels them as that charset instead
5889 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
5890 expansion operator; (ii) when Exim creates a From: line for a local
5891 message; (iii) when a header line is rewritten to include a "phrase" part.
5893 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
5894 buggy, causing it to skip the first lines of messages whose message ID
5895 ended in 'D'. This would not have bitten before Exim release 4.14, because
5896 message IDs were unlikely to end in 'D' before then. The effect was to have
5897 incorrect size information for certain domains.
5899 45. #include "config.h" was missing at the start of the crypt16.c module. This
5900 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
5903 46. If there was a timeout during a "random" callout check, Exim treated it as
5904 a failure of the random address, and carried on sending RSET and the real
5905 address. If the delay was just some slowness somewhere, the response to the
5906 original RCPT would be taken as a response to RSET and so on, causing
5907 mayhem of various kinds.
5909 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
5910 when I implemented it. It didn't allow for the fact that some option values
5911 may legitimatetly be negative (e.g. size_addition), and it didn't even do
5912 the right test for positive values.
5914 48. Domain names in DNS records are case-independent. Exim always looks them up
5915 in lower case. Some resolvers return domain names in exactly the case they
5916 appear in the zone file, that is, they may contain uppercase letters. Not
5917 all resolvers do this - some return always lower case. Exim was treating a
5918 change of case by a resolver as a change of domain, similar to a widening
5919 of a domain abbreviation. This triggered its re-routing code and so it was
5920 trying to route what was effectively the same domain again. This normally
5921 caused routing to fail (because the router wouldn't handle the domain
5922 twice). Now Exim checks for this case specially, and just changes the
5923 casing of the domain that it ultimately uses when it transmits the message
5926 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
5929 50. If a filter generated a file delivery with a non-absolute name (possible if
5930 no home directory exists for the router), the forbid_file option was not
5933 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
5934 the existing equality matching.
5936 52. Exim was using ints instead of ino_t variables in some places where it was
5937 dealing with inode numbers.
5939 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
5940 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
5941 called TMPDIR, and if it finds it is different, it changes its value.
5943 54. The smtp_printf() function is now made available to local_scan() so
5944 additional output lines can be written before returning. There is also an
5945 smtp_fflush() function to enable the detection of a dropped connection.
5946 The variables smtp_input and smtp_batched_input are exported to
5949 55. Changed the default runtime configuration: the message "Unknown user"
5950 has been removed from the ACL, and instead placed on the localuser router,
5951 using the cannot_route_message feature. This means that any verification
5952 failures that generate their own messages won't get overridden. Similarly,
5953 the "Unrouteable address" message that was in the ACL for unverifiable
5954 relay addresses has also been removed.
5956 56. Added hosts_avoid_esmtp to the smtp transport.
5958 57. The exicyclog script was not checking for the esoteric option
5959 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
5960 will work only if exicyclog is run under the appropriate euid.
5962 58. Following a discussion on the list, the rules by which Exim recognises line
5963 endings on incoming messages have been changed. The -dropcr and drop_cr
5964 options are now no-ops, retained only for backwards compatibility. The
5965 following line terminators are recognized: LF CRLF CR. However, special
5966 processing applies to CR:
5968 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
5969 nor a local message in the state where . is a terminator.
5971 (ii) If a bare CR is encountered in a header line, an extra space is added
5972 after the line terminator so as not to end the header. The reasoning
5973 behind this is that bare CRs in header lines are most likely either
5974 to be mistakes, or people trying to play silly games.
5976 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
5977 was being incorrectly given as 18 bytes larger than it should have been.
5978 This is a VOB (very old bug).
5980 60. This may never have affected anything current, but just in case it has:
5981 When the local host is found other than at the start of a list of hosts,
5982 the local host, those with the same MX, and any that follow, are discarded.
5983 When the list in question was part of a longer list of hosts, the following
5984 hosts (not currently being processed) were also being discarded. This no
5985 longer happens. I'm not sure if this situation could ever has previously
5988 61. Added the "/MX" feature to lists of hosts in the manualroute and query
5991 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
5992 header. This is something that is recommended in a new Internet Draft, and
5993 is something that is documented as being done by Sendmail. There are two
5994 possible values. For messages generated by the autoreply transport, Exim
5997 Auto-Submitted: auto-replied
5999 whereas for all other generated messages (e.g. bounces) it adds
6001 Auto-Submitted: auto-generated
6003 63. The "personal" condition in filters now includes a test for the
6004 Auto-Submitted: header. If it contains the string "auto-" the message it
6005 not considered personal.
6007 64. Added rcpt_include_affixes as a generic transport option.
6009 65. Added queue_only_override (default true).
6011 66. Added the syslog_duplication option.
6013 67. If what should have been the first header line of a message consisted of
6014 a space followed by a colon, Exim was mis-interpreting it as a header line.
6015 It isn't of course - it is syntactically invalid and should therefore be
6016 treated as the start of the message body. The misbehaviour could have
6017 caused a number of strange effects, including loss of data in subsequent
6018 header lines, and spool format errors.
6020 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
6021 client host had authenticated. This control can now be exercised by an ACL
6022 for more flexibility.
6024 69. By default, callouts do not happen when testing with -bh. There is now a
6025 variant, -bhc, which does actually run the callout code, including
6026 consulting and updating the callout cache.
6028 70. Added support for saslauthd authentication, courtesy of Alexander
6031 71. If statvfs() failed on the spool or log directories while checking their
6032 size for availability, Exim confusingly gave the error "space shortage".
6033 Furthermore, in debugging mode it crashed with a floating point exception.
6034 These checks are done if check_{spool,log}_{space,inodes} are set, and when
6035 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
6036 serious problem, Exim now writes to the main and panic logs when this
6037 happens, with details of the failure. It then refuses to accept the
6038 incoming message, giving the message "spool directory problem" or "log
6039 directory problem" with a 421 code for SMTP messages.
6041 72. When Exim is about to re-exec itself, it ensures that the file descriptors
6042 0, 1, and 2 exist, because some OS complain for execs without them (see
6043 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
6044 descriptors. However, the code omitted to check that the open succeeded,
6045 causing mysterious errors if for some reason the permissions on /dev/null
6046 got screwed. Now Exim writes a message to the main and panic logs, and
6047 bombs out if it can't open /dev/null.
6049 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
6050 interact so that it is all more flexible. It is supposed to remain
6051 backwards compatible. Also added extra_local_interfaces.
6053 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
6054 to bomb out with an assertion failure - to the client this appears as a
6055 connection drop. This problem occurs in the part of the code that was taken
6056 from the Samba project. Fortunately, the assertion is in a very simple
6057 function, so I have fixed this by reproducing the function inline in the
6058 one place where it is called, and arranging for authentication to fail
6059 instead of killing the process with assert().
6061 75. The SPA client code was not working when the server requested OEM rather
6062 than Unicode encoding.
6064 76. Added code to make require_files with a specific uid setting more usable in
6065 the case where statting the file as root fails - usually a non-root-mounted
6066 NFS file system. When this happens and the failure is EACCES, Exim now
6067 forks a subprocess and does the per-uid checking as the relevant uid.
6069 77. Added process_log_path.
6071 78. If log_file_path was not explicitly set, a setting of check_log_space or
6072 check_log_inodes was ignored.
6074 79. If a space check for the spool or log partitions fails, the incident is now
6075 logged. Of course, in the latter case the data may get lost...
6077 80. Added the %p formatting code to string_format() so that it can be used to
6078 print addresses in debug_print(). Adjusted all the address printing in the
6079 debugging in store.c to use %p rather than %d.
6081 81. There was a concern that a line of code in smtp_in.c could overflow a
6082 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
6083 initially expressed, the concern was not well-founded, because trailing
6084 spaces are removed early. However, if the trailing spaces were followed by
6085 a NULL, they did not get removed, so the overflow was possible. Two fixes
6088 (a) I re-wrote the offending code in a cleaner fashion.
6089 (b) If an incoming SMTP command contains a NULL character, it is rejected
6092 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
6093 runs initgroups(), so that if the Exim user is in any additional groups,
6094 they will be used during message reception.
6100 The change log for 4.20 and earlier releases has been archived.
HCoop / hcoop / debian / exim4.git / blob