Commit | Line | Data |
---|---|---|
d38e06ff CE |
1 | ##################################################### |
2 | ### main/01_exim4-config_listmacrosdefs | |
3 | ##################################################### | |
4 | ###################################################################### | |
5 | # Runtime configuration file for Exim 4 (Debian Packaging) # | |
6 | ###################################################################### | |
7 | ||
8 | ###################################################################### | |
9 | # /etc/exim4/exim4.conf.template is only used with the non-split | |
10 | # configuration scheme. | |
11 | # /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs is only used | |
12 | # with the split configuration scheme. | |
13 | # If you find this comment anywhere else, somebody copied it there. | |
14 | # Documentation about the Debian exim4 configuration scheme can be | |
15 | # found in /usr/share/doc/exim4-base/README.Debian.gz. | |
16 | ###################################################################### | |
17 | ||
18 | ###################################################################### | |
19 | # MAIN CONFIGURATION SETTINGS # | |
20 | ###################################################################### | |
21 | ||
22 | # Just for reference and scripts. | |
23 | # On Debian systems, the main binary is installed as exim4 to avoid | |
24 | # conflicts with the exim 3 packages. | |
25 | exim_path = /usr/sbin/exim4 | |
26 | ||
27 | # Macro defining the main configuration directory. | |
28 | # We do not use absolute paths. | |
29 | .ifndef CONFDIR | |
30 | CONFDIR = /etc/exim4 | |
31 | .endif | |
32 | ||
33 | # debconf-driven macro definitions get inserted after this line | |
34 | UPEX4CmacrosUPEX4C = 1 | |
35 | ||
36 | # Create domain and host lists for relay control | |
37 | # '@' refers to 'the name of the local host' | |
38 | ||
39 | # List of domains considered local for exim. Domains not listed here | |
40 | # need to be deliverable remotely. | |
41 | domainlist local_domains = MAIN_LOCAL_DOMAINS | |
42 | ||
43 | # List of recipient domains to relay _to_. Use this list if you're - | |
44 | # for example - fallback MX or mail gateway for domains. | |
45 | domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS | |
46 | ||
47 | # List of sender networks (IP addresses) to _unconditionally_ relay | |
48 | # _for_. If you intend to be SMTP AUTH server, you do not need to enter | |
49 | # anything here. | |
50 | hostlist relay_from_hosts = MAIN_RELAY_NETS | |
51 | ||
52 | ||
53 | # Decide which domain to use to add to all unqualified addresses. | |
54 | # If MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN is defined, the primary | |
55 | # hostname is used. If not, but MAIN_QUALIFY_DOMAIN is set, the value | |
56 | # of MAIN_QUALIFY_DOMAIN is used. If both macros are not defined, | |
57 | # the first line of /etc/mailname is used. | |
58 | .ifndef MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN | |
59 | .ifndef MAIN_QUALIFY_DOMAIN | |
60 | qualify_domain = ETC_MAILNAME | |
61 | .else | |
62 | qualify_domain = MAIN_QUALIFY_DOMAIN | |
63 | .endif | |
64 | .endif | |
65 | ||
66 | # listen on all all interfaces? | |
67 | .ifdef MAIN_LOCAL_INTERFACES | |
68 | local_interfaces = MAIN_LOCAL_INTERFACES | |
69 | .endif | |
70 | ||
71 | .ifndef LOCAL_DELIVERY | |
72 | # The default transport, set in /etc/exim4/update-exim4.conf.conf, | |
73 | # defaulting to mail_spool. See CONFDIR/conf.d/transport/ for possibilities | |
74 | LOCAL_DELIVERY=mail_spool | |
75 | .endif | |
76 | ||
77 | # The gecos field in /etc/passwd holds not only the name. see passwd(5). | |
78 | gecos_pattern = ^([^,:]*) | |
79 | gecos_name = $1 | |
80 | ||
81 | # define macros to be used in acl/30_exim4-config_check_rcpt to check | |
82 | # recipient local parts for strange characters. | |
83 | ||
84 | # This macro definition really should be in | |
85 | # acl/30_exim4-config_check_rcpt but cannot be there due to | |
86 | # http://www.exim.org/bugzilla/show_bug.cgi?id=101 as of exim 4.62. | |
87 | ||
88 | # These macros are documented in acl/30_exim4-config_check_rcpt, | |
89 | # can be changed here or overridden by a locally added configuration | |
90 | # file as described in README.Debian chapter 2.1.2 | |
91 | ||
92 | .ifndef CHECK_RCPT_LOCAL_LOCALPARTS | |
93 | CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?] | |
94 | .endif | |
95 | ||
96 | .ifndef CHECK_RCPT_REMOTE_LOCALPARTS | |
97 | CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./ | |
98 | .endif | |
99 | ||
100 | # always log tls_peerdn as we use TLS for outgoing connects by default | |
101 | .ifndef MAIN_LOG_SELECTOR | |
102 | MAIN_LOG_SELECTOR = +tls_peerdn | |
103 | .endif | |
104 | ##################################################### | |
105 | ### end main/01_exim4-config_listmacrosdefs | |
106 | ##################################################### | |
107 | ##################################################### | |
108 | ### main/02_exim4-config_options | |
109 | ##################################################### | |
110 | ||
111 | ### main/02_exim4-config_options | |
112 | ################################# | |
113 | ||
114 | ||
115 | # Defines the access control list that is run when an | |
116 | # SMTP MAIL command is received. | |
117 | # | |
118 | .ifndef MAIN_ACL_CHECK_MAIL | |
119 | MAIN_ACL_CHECK_MAIL = acl_check_mail | |
120 | .endif | |
121 | acl_smtp_mail = MAIN_ACL_CHECK_MAIL | |
122 | ||
123 | ||
124 | # Defines the access control list that is run when an | |
125 | # SMTP RCPT command is received. | |
126 | # | |
127 | .ifndef MAIN_ACL_CHECK_RCPT | |
128 | MAIN_ACL_CHECK_RCPT = acl_check_rcpt | |
129 | .endif | |
130 | acl_smtp_rcpt = MAIN_ACL_CHECK_RCPT | |
131 | ||
132 | ||
133 | # Defines the access control list that is run when an | |
134 | # SMTP DATA command is received. | |
135 | # | |
136 | .ifndef MAIN_ACL_CHECK_DATA | |
137 | MAIN_ACL_CHECK_DATA = acl_check_data | |
138 | .endif | |
139 | acl_smtp_data = MAIN_ACL_CHECK_DATA | |
140 | ||
141 | ||
142 | # Message size limit. The default (used when MESSAGE_SIZE_LIMIT | |
143 | # is unset) is 50 MB | |
144 | .ifdef MESSAGE_SIZE_LIMIT | |
145 | message_size_limit = MESSAGE_SIZE_LIMIT | |
146 | .endif | |
147 | ||
148 | ||
149 | # If you are running exim4-daemon-heavy or a custom version of Exim that | |
150 | # was compiled with the content-scanning extension, you can cause incoming | |
151 | # messages to be automatically scanned for viruses. You have to modify the | |
152 | # configuration in two places to set this up. The first of them is here, | |
153 | # where you define the interface to your scanner. This example is typical | |
154 | # for ClamAV; see the manual for details of what to set for other virus | |
155 | # scanners. The second modification is in the acl_check_data access | |
156 | # control list. | |
157 | ||
158 | # av_scanner = clamd:/tmp/clamd | |
159 | ||
160 | ||
161 | # For spam scanning, there is a similar option that defines the interface to | |
162 | # SpamAssassin. You do not need to set this if you are using the default, which | |
163 | # is shown in this commented example. As for virus scanning, you must also | |
164 | # modify the acl_check_data access control list to enable spam scanning. | |
165 | ||
166 | # spamd_address = 127.0.0.1 783 | |
167 | ||
168 | # Domain used to qualify unqualified recipient addresses | |
169 | # If this option is not set, the qualify_domain value is used. | |
170 | # qualify_recipient = <value of qualify_domain> | |
171 | ||
172 | ||
173 | # Allow Exim to recognize addresses of the form "user@[10.11.12.13]", | |
174 | # where the domain part is a "domain literal" (an IP address) instead | |
175 | # of a named domain. The RFCs require this facility, but it is disabled | |
176 | # in the default config since it is seldomly used and frequently abused. | |
177 | # Domain literal support also needs a special router, which is automatically | |
178 | # enabled if you use the enable macro MAIN_ALLOW_DOMAIN_LITERALS. | |
179 | # Additionally, you might want to make your local IP addresses (or @[]) | |
180 | # local domains. | |
181 | .ifdef MAIN_ALLOW_DOMAIN_LITERALS | |
182 | allow_domain_literals | |
183 | .endif | |
184 | ||
185 | ||
186 | # Do a reverse DNS lookup on all incoming IP calls, in order to get the | |
187 | # true host name. If you feel this is too expensive, the networks for | |
188 | # which a lookup is done can be listed here. | |
189 | .ifndef DC_minimaldns | |
190 | .ifndef MAIN_HOST_LOOKUP | |
191 | MAIN_HOST_LOOKUP = * | |
192 | .endif | |
193 | host_lookup = MAIN_HOST_LOOKUP | |
194 | .endif | |
195 | ||
196 | ||
197 | # In a minimaldns setup, update-exim4.conf guesses the hostname and | |
198 | # dumps it here to avoid DNS lookups being done at Exim run time. | |
199 | .ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME | |
200 | primary_hostname = MAIN_HARDCODE_PRIMARY_HOSTNAME | |
201 | .endif | |
202 | ||
203 | # The settings below, which are actually the same as the defaults in the | |
204 | # code, cause Exim to make RFC 1413 (ident) callbacks for all incoming SMTP | |
205 | # calls. You can limit the hosts to which these calls are made, and/or change | |
206 | # the timeout that is used. If you set the timeout to zero, all RFC 1413 calls | |
207 | # are disabled. RFC 1413 calls are cheap and can provide useful information | |
208 | # for tracing problem messages, but some hosts and firewalls are | |
209 | # misconfigured to drop the requests instead of either answering or | |
210 | # rejecting them. This can result in a timeout instead of an immediate refused | |
211 | # connection, leading to delays on starting up SMTP sessions. (The default was | |
212 | # reduced from 30s to 5s for release 4.61.) | |
213 | # rfc1413_hosts = * | |
214 | # rfc1413_query_timeout = 5s | |
215 | ||
216 | # When using an external relay tester (such as rt.njabl.org and/or the | |
217 | # currently defunct relay-test.mail-abuse.org, the test may be aborted | |
218 | # since exim complains about "too many nonmail commands". If you want | |
219 | # the test to complete, add the host from where "your" relay tester | |
220 | # connects from to the MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS macro. | |
221 | # Please note that a non-empty setting may cause extra DNS lookups to | |
222 | # happen, which is the reason why this option is commented out in the | |
223 | # default settings. | |
224 | # MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS = !rt.njabl.org | |
225 | .ifdef MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS | |
226 | smtp_accept_max_nonmail_hosts = MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS | |
227 | .endif | |
228 | ||
229 | # By default, exim forces a Sender: header containing the local | |
230 | # account name at the local host name in all locally submitted messages | |
231 | # that don't have the local account name at the local host name in the | |
232 | # From: header, deletes any Sender: header present in the submitted | |
233 | # message and forces the envelope sender of all locally submitted | |
234 | # messages to the local account name at the local host name. | |
235 | # The following settings allow local users to specify their own envelope sender | |
236 | # in a locally submitted message. Sender: headers existing in a locally | |
237 | # submitted message are not removed, and no automatic Sender: headers | |
238 | # are added. These settings are fine for most hosts. | |
239 | # If you run exim on a classical multi-user systems where all users | |
240 | # have local mailboxes that can be reached via SMTP from the Internet | |
241 | # with the local FQDN as the domain part of the address, you might want | |
242 | # to disable the following three lines for traceability reasons. | |
243 | .ifndef MAIN_FORCE_SENDER | |
244 | local_from_check = false | |
245 | local_sender_retain = true | |
246 | untrusted_set_sender = * | |
247 | .endif | |
248 | ||
249 | ||
250 | # By default, Exim expects all envelope addresses to be fully qualified, that | |
251 | # is, they must contain both a local part and a domain. Configure exim | |
252 | # to accept unqualified addresses from certain hosts. When this is done, | |
253 | # unqualified addresses are qualified using the settings of qualify_domain | |
254 | # and/or qualify_recipient (see above). | |
255 | # sender_unqualified_hosts = <unset> | |
256 | # recipient_unqualified_hosts = <unset> | |
257 | ||
258 | ||
259 | # Configure Exim to support the "percent hack" for certain domains. | |
260 | # The "percent hack" is the feature by which mail addressed to x%y@z | |
261 | # (where z is one of the domains listed) is locally rerouted to x@y | |
262 | # and sent on. If z is not one of the "percent hack" domains, x%y is | |
263 | # treated as an ordinary local part. The percent hack is rarely needed | |
264 | # nowadays but frequently abused. You should not enable it unless you | |
265 | # are sure that you really need it. | |
266 | # percent_hack_domains = <unset> | |
267 | ||
268 | ||
269 | # Bounce handling | |
270 | .ifndef MAIN_IGNORE_BOUNCE_ERRORS_AFTER | |
271 | MAIN_IGNORE_BOUNCE_ERRORS_AFTER = 2d | |
272 | .endif | |
273 | ignore_bounce_errors_after = MAIN_IGNORE_BOUNCE_ERRORS_AFTER | |
274 | ||
275 | .ifndef MAIN_TIMEOUT_FROZEN_AFTER | |
276 | MAIN_TIMEOUT_FROZEN_AFTER = 7d | |
277 | .endif | |
278 | timeout_frozen_after = MAIN_TIMEOUT_FROZEN_AFTER | |
279 | ||
280 | .ifndef MAIN_FREEZE_TELL | |
281 | MAIN_FREEZE_TELL = postmaster | |
282 | .endif | |
283 | freeze_tell = MAIN_FREEZE_TELL | |
284 | ||
285 | ||
286 | # Define spool directory | |
287 | .ifndef SPOOLDIR | |
288 | SPOOLDIR = /var/spool/exim4 | |
289 | .endif | |
290 | spool_directory = SPOOLDIR | |
291 | ||
292 | ||
293 | # trusted users can set envelope-from to arbitrary values | |
294 | .ifndef MAIN_TRUSTED_USERS | |
295 | MAIN_TRUSTED_USERS = uucp | |
296 | .endif | |
297 | trusted_users = MAIN_TRUSTED_USERS | |
298 | .ifdef MAIN_TRUSTED_GROUPS | |
299 | trusted_groups = MAIN_TRUSTED_GROUPS | |
300 | .endif | |
301 | ||
302 | ||
303 | # users in admin group can do many other things | |
304 | # admin_groups = <unset> | |
305 | ||
306 | ||
307 | # SMTP Banner. The example includes the Debian version in the SMTP dialog | |
308 | # MAIN_SMTP_BANNER = "${primary_hostname} ESMTP Exim ${version_number} (Debian package MAIN_PACKAGE_VERSION) ${tod_full}" | |
309 | # smtp_banner = $smtp_active_hostname ESMTP Exim $version_number $tod_full | |
310 | ##################################################### | |
311 | ### end main/02_exim4-config_options | |
312 | ##################################################### | |
313 | ##################################################### | |
314 | ### main/03_exim4-config_tlsoptions | |
315 | ##################################################### | |
316 | ||
317 | ### main/03_exim4-config_tlsoptions | |
318 | ################################# | |
319 | ||
320 | # TLS/SSL configuration for exim as an SMTP server. | |
321 | # See /usr/share/doc/exim4-base/README.Debian.gz for explanations. | |
322 | ||
323 | .ifdef MAIN_TLS_ENABLE | |
324 | # Defines what hosts to 'advertise' STARTTLS functionality to. The | |
325 | # default, *, will advertise to all hosts that connect with EHLO. | |
326 | .ifndef MAIN_TLS_ADVERTISE_HOSTS | |
327 | MAIN_TLS_ADVERTISE_HOSTS = * | |
328 | .endif | |
329 | tls_advertise_hosts = MAIN_TLS_ADVERTISE_HOSTS | |
330 | ||
331 | ||
332 | # Full paths to Certificate and Private Key. The Private Key file | |
333 | # must be kept 'secret' and should be owned by root.Debian-exim mode | |
334 | # 640 (-rw-r-----). exim-gencert takes care of these prerequisites. | |
335 | # Normally, exim4 looks for certificate and key in different files: | |
336 | # MAIN_TLS_CERTIFICATE - path to certificate file, | |
337 | # CONFDIR/exim.crt if unset | |
338 | # MAIN_TLS_PRIVATEKEY - path to private key file | |
339 | # CONFDIR/exim.key if unset | |
340 | # You can also configure exim to look for certificate and key in the | |
341 | # same file, set MAIN_TLS_CERTKEY to that file to enable. This takes | |
342 | # precedence over all other settings regarding certificate and key file. | |
343 | .ifdef MAIN_TLS_CERTKEY | |
344 | tls_certificate = MAIN_TLS_CERTKEY | |
345 | .else | |
346 | .ifndef MAIN_TLS_CERTIFICATE | |
347 | MAIN_TLS_CERTIFICATE = CONFDIR/exim.crt | |
348 | .endif | |
349 | tls_certificate = MAIN_TLS_CERTIFICATE | |
350 | ||
351 | .ifndef MAIN_TLS_PRIVATEKEY | |
352 | MAIN_TLS_PRIVATEKEY = CONFDIR/exim.key | |
353 | .endif | |
354 | tls_privatekey = MAIN_TLS_PRIVATEKEY | |
355 | .endif | |
356 | ||
357 | # Pointer to the CA Certificates against which client certificates are | |
358 | # checked. This is controlled by the `tls_verify_hosts' and | |
359 | # `tls_try_verify_hosts' lists below. | |
360 | # If you want to check server certificates, you need to add an | |
361 | # tls_verify_certificates statement to the smtp transport. | |
362 | # /etc/ssl/certs/ca-certificates.crt is generated by | |
363 | # the "ca-certificates" package's update-ca-certificates(8) command. | |
364 | .ifndef MAIN_TLS_VERIFY_CERTIFICATES | |
365 | MAIN_TLS_VERIFY_CERTIFICATES = ${if exists{/etc/ssl/certs/ca-certificates.crt}\ | |
366 | {/etc/ssl/certs/ca-certificates.crt}\ | |
367 | {/dev/null}} | |
368 | .endif | |
369 | tls_verify_certificates = MAIN_TLS_VERIFY_CERTIFICATES | |
370 | ||
371 | ||
372 | # A list of hosts which are constrained by `tls_verify_certificates'. A host | |
373 | # that matches `tls_verify_host' must present a certificate that is | |
374 | # verifyable through `tls_verify_certificates' in order to be accepted as an | |
375 | # SMTP client. If it does not, the connection is aborted. | |
376 | .ifdef MAIN_TLS_VERIFY_HOSTS | |
377 | tls_verify_hosts = MAIN_TLS_VERIFY_HOSTS | |
378 | .endif | |
379 | ||
380 | # A weaker form of checking: if a client matches `tls_try_verify_hosts' (but | |
381 | # not `tls_verify_hosts'), request a certificate and check it against | |
382 | # `tls_verify_certificates' but do not abort the connection if there is no | |
383 | # certificate or if the certificate presented does not match. (This | |
384 | # condition can be tested for in ACLs through `verify = certificate') | |
385 | # By default, this check is done for all hosts. It is known that some | |
386 | # clients (including incredimail's version downloadable in February | |
387 | # 2008) choke on this. To disable, set MAIN_TLS_TRY_VERIFY_HOSTS to an | |
388 | # empty value. | |
389 | .ifndef MAIN_TLS_TRY_VERIFY_HOSTS | |
390 | MAIN_TLS_TRY_VERIFY_HOSTS = * | |
391 | .endif | |
392 | tls_try_verify_hosts = MAIN_TLS_TRY_VERIFY_HOSTS | |
393 | ||
394 | .endif | |
395 | ##################################################### | |
396 | ### end main/03_exim4-config_tlsoptions | |
397 | ##################################################### | |
398 | ##################################################### | |
399 | ### main/90_exim4-config_log_selector | |
400 | ##################################################### | |
401 | ||
402 | ### main/90_exim4-config_log_selector | |
403 | ################################# | |
404 | ||
405 | # uncomment this for debugging | |
406 | # MAIN_LOG_SELECTOR == MAIN_LOG_SELECTOR +all -subject -arguments | |
407 | ||
408 | .ifdef MAIN_LOG_SELECTOR | |
409 | log_selector = MAIN_LOG_SELECTOR | |
410 | .endif | |
411 | ##################################################### | |
412 | ### end main/90_exim4-config_log_selector | |
413 | ##################################################### | |
414 | ##################################################### | |
415 | ### acl/00_exim4-config_header | |
416 | ##################################################### | |
417 | ||
418 | ###################################################################### | |
419 | # ACL CONFIGURATION # | |
420 | # Specifies access control lists for incoming SMTP mail # | |
421 | ###################################################################### | |
422 | begin acl | |
423 | ||
424 | ||
425 | ##################################################### | |
426 | ### end acl/00_exim4-config_header | |
427 | ##################################################### | |
428 | ##################################################### | |
429 | ### acl/20_exim4-config_local_deny_exceptions | |
430 | ##################################################### | |
431 | ||
432 | ### acl/20_exim4-config_local_deny_exceptions | |
433 | ################################# | |
434 | ||
435 | # This is used to determine whitelisted senders and hosts. | |
436 | # It checks for CONFDIR/host_local_deny_exceptions and | |
437 | # CONFDIR/sender_local_deny_exceptions. | |
438 | # | |
439 | # It is meant to be used from some other acl entry. | |
440 | # | |
441 | # See exim4-config_files(5) for details. | |
442 | # | |
443 | # If the files do not exist, the white list never matches, which is | |
444 | # the desired behaviour. | |
445 | # | |
446 | # The old file names CONFDIR/local_host_whitelist and | |
447 | # CONFDIR/local_sender_whitelist will continue to be honored for a | |
448 | # transition period. Their use is deprecated. | |
449 | ||
450 | acl_local_deny_exceptions: | |
451 | accept | |
452 | hosts = ${if exists{CONFDIR/host_local_deny_exceptions}\ | |
453 | {CONFDIR/host_local_deny_exceptions}\ | |
454 | {}} | |
455 | accept | |
456 | senders = ${if exists{CONFDIR/sender_local_deny_exceptions}\ | |
457 | {CONFDIR/sender_local_deny_exceptions}\ | |
458 | {}} | |
459 | accept | |
460 | hosts = ${if exists{CONFDIR/local_host_whitelist}\ | |
461 | {CONFDIR/local_host_whitelist}\ | |
462 | {}} | |
463 | accept | |
464 | senders = ${if exists{CONFDIR/local_sender_whitelist}\ | |
465 | {CONFDIR/local_sender_whitelist}\ | |
466 | {}} | |
467 | ||
468 | # This hook allows you to hook in your own ACLs without having to | |
469 | # modify this file. If you do it like we suggest, you'll end up with | |
470 | # a small performance penalty since there is an additional file being | |
471 | # accessed. This doesn't happen if you leave the macro unset. | |
472 | .ifdef LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE | |
473 | .include LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE | |
474 | .endif | |
475 | ||
476 | # this is still supported for a transition period and is deprecated. | |
477 | .ifdef WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE | |
478 | .include WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE | |
479 | .endif | |
480 | ##################################################### | |
481 | ### end acl/20_exim4-config_local_deny_exceptions | |
482 | ##################################################### | |
483 | ##################################################### | |
484 | ### acl/30_exim4-config_check_mail | |
485 | ##################################################### | |
486 | ||
487 | ### acl/30_exim4-config_check_mail | |
488 | ################################# | |
489 | ||
490 | # This access control list is used for every MAIL command in an incoming | |
491 | # SMTP message. The tests are run in order until the address is either | |
492 | # accepted or denied. | |
493 | # | |
494 | acl_check_mail: | |
495 | .ifdef CHECK_MAIL_HELO_ISSUED | |
496 | deny | |
497 | message = no HELO given before MAIL command | |
498 | condition = ${if def:sender_helo_name {no}{yes}} | |
499 | .endif | |
500 | ||
501 | accept | |
502 | ##################################################### | |
503 | ### end acl/30_exim4-config_check_mail | |
504 | ##################################################### | |
505 | ##################################################### | |
506 | ### acl/30_exim4-config_check_rcpt | |
507 | ##################################################### | |
508 | ||
509 | ### acl/30_exim4-config_check_rcpt | |
510 | ################################# | |
511 | ||
512 | # This access control list is used for every RCPT command in an incoming | |
513 | # SMTP message. The tests are run in order until the address is either | |
514 | # accepted or denied. | |
515 | # | |
516 | acl_check_rcpt: | |
517 | ||
518 | # Accept if the source is local SMTP (i.e. not over TCP/IP). We do this by | |
519 | # testing for an empty sending host field. | |
520 | accept | |
521 | hosts = : | |
522 | ||
523 | ||
524 | # The following section of the ACL is concerned with local parts that contain | |
525 | # certain non-alphanumeric characters. Dots in unusual places are | |
526 | # handled by this ACL as well. | |
527 | # | |
528 | # Non-alphanumeric characters other than dots are rarely found in genuine | |
529 | # local parts, but are often tried by people looking to circumvent | |
530 | # relaying restrictions. Therefore, although they are valid in local | |
531 | # parts, these rules disallow certain non-alphanumeric characters, as | |
532 | # a precaution. | |
533 | # | |
534 | # Empty components (two dots in a row) are not valid in RFC 2822, but Exim | |
535 | # allows them because they have been encountered. (Consider local parts | |
536 | # constructed as "firstinitial.secondinitial.familyname" when applied to | |
537 | # a name without a second initial.) However, a local part starting | |
538 | # with a dot or containing /../ can cause trouble if it is used as part of a | |
539 | # file name (e.g. for a mailing list). This is also true for local parts that | |
540 | # contain slashes. A pipe symbol can also be troublesome if the local part is | |
541 | # incorporated unthinkingly into a shell command line. | |
542 | # | |
543 | # These ACL components will block recipient addresses that are valid | |
544 | # from an RFC2822 point of view. We chose to have them blocked by | |
545 | # default for security reasons. | |
546 | # | |
547 | # If you feel that your site should have less strict recipient | |
548 | # checking, please feel free to change the default values of the macros | |
549 | # defined in main/01_exim4-config_listmacrosdefs or override them from a | |
550 | # local configuration file. | |
551 | # | |
552 | # Two different rules are used. The first one has a quite strict | |
553 | # default, and is applied to messages that are addressed to one of the | |
554 | # local domains handled by this host. | |
555 | ||
556 | # The default value of CHECK_RCPT_LOCAL_LOCALPARTS is defined in | |
557 | # main/01_exim4-config_listmacrosdefs: | |
558 | # CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?] | |
559 | # This blocks local parts that begin with a dot or contain a quite | |
560 | # broad range of non-alphanumeric characters. | |
561 | .ifdef CHECK_RCPT_LOCAL_LOCALPARTS | |
562 | deny | |
563 | domains = +local_domains | |
564 | local_parts = CHECK_RCPT_LOCAL_LOCALPARTS | |
565 | message = restricted characters in address | |
566 | .endif | |
567 | ||
568 | ||
569 | # The second rule applies to all other domains, and its default is | |
570 | # considerably less strict. | |
571 | ||
572 | # The default value of CHECK_RCPT_REMOTE_LOCALPARTS is defined in | |
573 | # main/01_exim4-config_listmacrosdefs: | |
574 | # CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./ | |
575 | ||
576 | # It allows local users to send outgoing messages to sites | |
577 | # that use slashes and vertical bars in their local parts. It blocks | |
578 | # local parts that begin with a dot, slash, or vertical bar, but allows | |
579 | # these characters within the local part. However, the sequence /../ is | |
580 | # barred. The use of some other non-alphanumeric characters is blocked. | |
581 | # Single quotes might probably be dangerous as well, but they're | |
582 | # allowed by the default regexps to avoid rejecting mails to Ireland. | |
583 | # The motivation here is to prevent local users (or local users' malware) | |
584 | # from mounting certain kinds of attack on remote sites. | |
585 | .ifdef CHECK_RCPT_REMOTE_LOCALPARTS | |
586 | deny | |
587 | domains = !+local_domains | |
588 | local_parts = CHECK_RCPT_REMOTE_LOCALPARTS | |
589 | message = restricted characters in address | |
590 | .endif | |
591 | ||
592 | ||
593 | # Accept mail to postmaster in any local domain, regardless of the source, | |
594 | # and without verifying the sender. | |
595 | # | |
596 | accept | |
597 | .ifndef CHECK_RCPT_POSTMASTER | |
598 | local_parts = postmaster | |
599 | .else | |
600 | local_parts = CHECK_RCPT_POSTMASTER | |
601 | .endif | |
602 | domains = +local_domains : +relay_to_domains | |
603 | ||
604 | ||
605 | # Deny unless the sender address can be verified. | |
606 | # | |
607 | # This is disabled by default so that DNSless systems don't break. If | |
608 | # your system can do DNS lookups without delay or cost, you might want | |
609 | # to enable this feature. | |
610 | # | |
611 | # This feature does not work in smarthost and satellite setups as | |
612 | # with these setups all domains pass verification. See spec.txt chapter | |
613 | # 39.31 with the added information that a smarthost/satellite setup | |
614 | # routes all non-local e-mail to the smarthost. | |
615 | .ifdef CHECK_RCPT_VERIFY_SENDER | |
616 | deny | |
617 | message = Sender verification failed | |
618 | !acl = acl_local_deny_exceptions | |
619 | !verify = sender | |
620 | .endif | |
621 | ||
622 | # Verify senders listed in local_sender_callout with a callout. | |
623 | # | |
624 | # In smarthost and satellite setups, this causes the callout to be | |
625 | # done to the smarthost. Verification will thus only be reliable if the | |
626 | # smarthost does reject illegal addresses in the SMTP dialog. | |
627 | deny | |
628 | !acl = acl_local_deny_exceptions | |
629 | senders = ${if exists{CONFDIR/local_sender_callout}\ | |
630 | {CONFDIR/local_sender_callout}\ | |
631 | {}} | |
632 | !verify = sender/callout | |
633 | ||
634 | ||
635 | # Accept if the message comes from one of the hosts for which we are an | |
636 | # outgoing relay. It is assumed that such hosts are most likely to be MUAs, | |
637 | # so we set control=submission to make Exim treat the message as a | |
638 | # submission. It will fix up various errors in the message, for example, the | |
639 | # lack of a Date: header line. If you are actually relaying out out from | |
640 | # MTAs, you may want to disable this. If you are handling both relaying from | |
641 | # MTAs and submissions from MUAs you should probably split them into two | |
642 | # lists, and handle them differently. | |
643 | ||
644 | # Recipient verification is omitted here, because in many cases the clients | |
645 | # are dumb MUAs that don't cope well with SMTP error responses. If you are | |
646 | # actually relaying out from MTAs, you should probably add recipient | |
647 | # verification here. | |
648 | ||
649 | # Note that, by putting this test before any DNS black list checks, you will | |
650 | # always accept from these hosts, even if they end up on a black list. The | |
651 | # assumption is that they are your friends, and if they get onto black | |
652 | # list, it is a mistake. | |
653 | accept | |
654 | hosts = +relay_from_hosts | |
655 | control = submission/sender_retain | |
656 | ||
657 | ||
658 | # Accept if the message arrived over an authenticated connection, from | |
659 | # any host. Again, these messages are usually from MUAs, so recipient | |
660 | # verification is omitted, and submission mode is set. And again, we do this | |
661 | # check before any black list tests. | |
662 | accept | |
663 | authenticated = * | |
664 | control = submission/sender_retain | |
665 | ||
666 | ||
667 | # Insist that any other recipient address that we accept is either in one of | |
668 | # our local domains, or is in a domain for which we explicitly allow | |
669 | # relaying. Any other domain is rejected as being unacceptable for relaying. | |
670 | require | |
671 | message = relay not permitted | |
672 | domains = +local_domains : +relay_to_domains | |
673 | ||
674 | ||
675 | # We also require all accepted addresses to be verifiable. This check will | |
676 | # do local part verification for local domains, but only check the domain | |
677 | # for remote domains. | |
678 | require | |
679 | verify = recipient | |
680 | ||
681 | ||
682 | # Verify recipients listed in local_rcpt_callout with a callout. | |
683 | # This is especially handy for forwarding MX hosts (secondary MX or | |
684 | # mail hubs) of domains that receive a lot of spam to non-existent | |
685 | # addresses. The only way to check local parts for remote relay | |
686 | # domains is to use a callout (add /callout), but please read the | |
687 | # documentation about callouts before doing this. | |
688 | deny | |
689 | !acl = acl_local_deny_exceptions | |
690 | recipients = ${if exists{CONFDIR/local_rcpt_callout}\ | |
691 | {CONFDIR/local_rcpt_callout}\ | |
692 | {}} | |
693 | !verify = recipient/callout | |
694 | ||
695 | ||
696 | # CONFDIR/local_sender_blacklist holds a list of envelope senders that | |
697 | # should have their access denied to the local host. Incoming messages | |
698 | # with one of these senders are rejected at RCPT time. | |
699 | # | |
700 | # The explicit white lists are honored as well as negative items in | |
701 | # the black list. See exim4-config_files(5) for details. | |
702 | deny | |
703 | message = sender envelope address $sender_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster | |
704 | !acl = acl_local_deny_exceptions | |
705 | senders = ${if exists{CONFDIR/local_sender_blacklist}\ | |
706 | {CONFDIR/local_sender_blacklist}\ | |
707 | {}} | |
708 | ||
709 | ||
710 | # deny bad sites (IP address) | |
711 | # CONFDIR/local_host_blacklist holds a list of host names, IP addresses | |
712 | # and networks (CIDR notation) that should have their access denied to | |
713 | # The local host. Messages coming in from a listed host will have all | |
714 | # RCPT statements rejected. | |
715 | # | |
716 | # The explicit white lists are honored as well as negative items in | |
717 | # the black list. See exim4-config_files(5) for details. | |
718 | deny | |
719 | message = sender IP address $sender_host_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster | |
720 | !acl = acl_local_deny_exceptions | |
721 | hosts = ${if exists{CONFDIR/local_host_blacklist}\ | |
722 | {CONFDIR/local_host_blacklist}\ | |
723 | {}} | |
724 | ||
725 | ||
726 | # Warn if the sender host does not have valid reverse DNS. | |
727 | # | |
728 | # If your system can do DNS lookups without delay or cost, you might want | |
729 | # to enable this. | |
730 | # If sender_host_address is defined, it's a remote call. If | |
731 | # sender_host_name is not defined, then reverse lookup failed. Use | |
732 | # this instead of !verify = reverse_host_lookup to catch deferrals | |
733 | # as well as outright failures. | |
734 | .ifdef CHECK_RCPT_REVERSE_DNS | |
735 | warn | |
736 | message = X-Host-Lookup-Failed: Reverse DNS lookup failed for $sender_host_address (${if eq{$host_lookup_failed}{1}{failed}{deferred}}) | |
737 | condition = ${if and{{def:sender_host_address}{!def:sender_host_name}}\ | |
738 | {yes}{no}} | |
739 | .endif | |
740 | ||
741 | ||
742 | # Use spfquery to perform a pair of SPF checks (for details, see | |
743 | # http://www.openspf.org/) | |
744 | # | |
745 | # This is quite costly in terms of DNS lookups (~6 lookups per mail). Do not | |
746 | # enable if that's an issue. Also note that if you enable this, you must | |
747 | # install "libmail-spf-query-perl" which provides the spfquery command. | |
748 | # Missing libmail-spf-query-perl will trigger the "Unexpected error in | |
749 | # SPF check" warning. | |
750 | .ifdef CHECK_RCPT_SPF | |
751 | deny | |
752 | message = [SPF] $sender_host_address is not allowed to send mail from ${if def:sender_address_domain {$sender_address_domain}{$sender_helo_name}}. \ | |
753 | Please see http://www.openspf.org/Why?scope=${if def:sender_address_domain {mfrom}{helo}};identity=${if def:sender_address_domain {$sender_address}{$sender_helo_name}};ip=$sender_host_address | |
754 | log_message = SPF check failed. | |
755 | !acl = acl_local_deny_exceptions | |
756 | condition = ${run{/usr/bin/spfquery --ip \"$sender_host_address\" --mail-from \"$sender_address\" --helo \"$sender_helo_name\"}\ | |
757 | {no}{${if eq {$runrc}{1}{yes}{no}}}} | |
758 | ||
759 | defer | |
760 | message = Temporary DNS error while checking SPF record. Try again later. | |
761 | condition = ${if eq {$runrc}{5}{yes}{no}} | |
762 | ||
763 | warn | |
764 | message = Received-SPF: ${if eq {$runrc}{0}{pass}{${if eq {$runrc}{2}{softfail}\ | |
765 | {${if eq {$runrc}{3}{neutral}{${if eq {$runrc}{4}{unknown}{${if eq {$runrc}{6}{none}{error}}}}}}}}}} | |
766 | condition = ${if <={$runrc}{6}{yes}{no}} | |
767 | ||
768 | warn | |
769 | log_message = Unexpected error in SPF check. | |
770 | condition = ${if >{$runrc}{6}{yes}{no}} | |
771 | ||
772 | # Support for best-guess (see http://www.openspf.org/developers-guide.html) | |
773 | warn | |
774 | message = X-SPF-Guess: ${run{/usr/bin/spfquery --ip \"$sender_host_address\" --mail-from \"$sender_address\" \ --helo \"$sender_helo_name\" --guess true}\ | |
775 | {pass}{${if eq {$runrc}{2}{softfail}{${if eq {$runrc}{3}{neutral}{${if eq {$runrc}{4}{unknown}\ | |
776 | {${if eq {$runrc}{6}{none}{error}}}}}}}}}} | |
777 | condition = ${if <={$runrc}{6}{yes}{no}} | |
778 | ||
779 | defer | |
780 | message = Temporary DNS error while checking SPF record. Try again later. | |
781 | condition = ${if eq {$runrc}{5}{yes}{no}} | |
782 | .endif | |
783 | ||
784 | ||
785 | # Check against classic DNS "black" lists (DNSBLs) which list | |
786 | # sender IP addresses | |
787 | .ifdef CHECK_RCPT_IP_DNSBLS | |
788 | warn | |
789 | message = X-Warning: $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text) | |
790 | log_message = $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text) | |
791 | dnslists = CHECK_RCPT_IP_DNSBLS | |
792 | .endif | |
793 | ||
794 | ||
795 | # Check against DNSBLs which list sender domains, with an option to locally | |
796 | # whitelist certain domains that might be blacklisted. | |
797 | # | |
798 | # Note: If you define CHECK_RCPT_DOMAIN_DNSBLS, you must append | |
799 | # "/$sender_address_domain" after each domain. For example: | |
800 | # CHECK_RCPT_DOMAIN_DNSBLS = rhsbl.foo.org/$sender_address_domain \ | |
801 | # : rhsbl.bar.org/$sender_address_domain | |
802 | .ifdef CHECK_RCPT_DOMAIN_DNSBLS | |
803 | warn | |
804 | message = X-Warning: $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text) | |
805 | log_message = $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text) | |
806 | !senders = ${if exists{CONFDIR/local_domain_dnsbl_whitelist}\ | |
807 | {CONFDIR/local_domain_dnsbl_whitelist}\ | |
808 | {}} | |
809 | dnslists = CHECK_RCPT_DOMAIN_DNSBLS | |
810 | .endif | |
811 | ||
812 | ||
813 | # This hook allows you to hook in your own ACLs without having to | |
814 | # modify this file. If you do it like we suggest, you'll end up with | |
815 | # a small performance penalty since there is an additional file being | |
816 | # accessed. This doesn't happen if you leave the macro unset. | |
817 | .ifdef CHECK_RCPT_LOCAL_ACL_FILE | |
818 | .include CHECK_RCPT_LOCAL_ACL_FILE | |
819 | .endif | |
820 | ||
821 | ||
822 | ############################################################################# | |
823 | # This check is commented out because it is recognized that not every | |
824 | # sysadmin will want to do it. If you enable it, the check performs | |
825 | # Client SMTP Authorization (csa) checks on the sending host. These checks | |
826 | # do DNS lookups for SRV records. The CSA proposal is currently (May 2005) | |
827 | # an Internet draft. You can, of course, add additional conditions to this | |
828 | # ACL statement to restrict the CSA checks to certain hosts only. | |
829 | # | |
830 | # require verify = csa | |
831 | ############################################################################# | |
832 | ||
833 | ||
834 | # Accept if the address is in a domain for which we are an incoming relay, | |
835 | # but again, only if the recipient can be verified. | |
836 | ||
837 | accept | |
838 | domains = +relay_to_domains | |
839 | endpass | |
840 | verify = recipient | |
841 | ||
842 | ||
843 | # At this point, the address has passed all the checks that have been | |
844 | # configured, so we accept it unconditionally. | |
845 | ||
846 | accept | |
847 | ##################################################### | |
848 | ### end acl/30_exim4-config_check_rcpt | |
849 | ##################################################### | |
850 | ##################################################### | |
851 | ### acl/40_exim4-config_check_data | |
852 | ##################################################### | |
853 | ||
854 | ### acl/40_exim4-config_check_data | |
855 | ################################# | |
856 | ||
857 | # This ACL is used after the contents of a message have been received. This | |
858 | # is the ACL in which you can test a message's headers or body, and in | |
859 | # particular, this is where you can invoke external virus or spam scanners. | |
860 | ||
861 | acl_check_data: | |
862 | ||
863 | # Deny unless the address list headers are syntactically correct. | |
864 | # | |
865 | # If you enable this, you might reject legitimate mail. | |
866 | .ifdef CHECK_DATA_VERIFY_HEADER_SYNTAX | |
867 | deny | |
868 | message = Message headers fail syntax check | |
869 | !acl = acl_local_deny_exceptions | |
870 | !verify = header_syntax | |
871 | .endif | |
872 | ||
873 | ||
874 | # require that there is a verifiable sender address in at least | |
875 | # one of the "Sender:", "Reply-To:", or "From:" header lines. | |
876 | .ifdef CHECK_DATA_VERIFY_HEADER_SENDER | |
877 | deny | |
878 | message = No verifiable sender address in message headers | |
879 | !acl = acl_local_deny_exceptions | |
880 | !verify = header_sender | |
881 | .endif | |
882 | ||
883 | ||
884 | # Deny if the message contains malware. Before enabling this check, you | |
885 | # must install a virus scanner and set the av_scanner option in the | |
886 | # main configuration. | |
887 | # | |
888 | # exim4-daemon-heavy must be used for this section to work. | |
889 | # | |
890 | # deny | |
891 | # malware = * | |
892 | # message = This message was detected as possible malware ($malware_name). | |
893 | ||
894 | ||
895 | # Add headers to a message if it is judged to be spam. Before enabling this, | |
896 | # you must install SpamAssassin. You also need to set the spamd_address | |
897 | # option in the main configuration. | |
898 | # | |
899 | # exim4-daemon-heavy must be used for this section to work. | |
900 | # | |
901 | # Please note that this is only suiteable as an example. There are | |
902 | # multiple issues with this configuration method. For example, if you go | |
903 | # this way, you'll give your spamassassin daemon write access to the | |
904 | # entire exim spool which might be a security issue in case of a | |
905 | # spamassassin exploit. | |
906 | # | |
907 | # See the exim docs and the exim wiki for more suitable examples. | |
908 | # | |
909 | # warn | |
910 | # spam = Debian-exim:true | |
911 | # message = X-Spam_score: $spam_score\n\ | |
912 | # X-Spam_score_int: $spam_score_int\n\ | |
913 | # X-Spam_bar: $spam_bar\n\ | |
914 | # X-Spam_report: $spam_report | |
915 | ||
916 | ||
917 | # This hook allows you to hook in your own ACLs without having to | |
918 | # modify this file. If you do it like we suggest, you'll end up with | |
919 | # a small performance penalty since there is an additional file being | |
920 | # accessed. This doesn't happen if you leave the macro unset. | |
921 | .ifdef CHECK_DATA_LOCAL_ACL_FILE | |
922 | .include CHECK_DATA_LOCAL_ACL_FILE | |
923 | .endif | |
924 | ||
925 | ||
926 | # accept otherwise | |
927 | accept | |
928 | ##################################################### | |
929 | ### end acl/40_exim4-config_check_data | |
930 | ##################################################### | |
931 | ##################################################### | |
932 | ### router/00_exim4-config_header | |
933 | ##################################################### | |
934 | ||
935 | ###################################################################### | |
936 | # ROUTERS CONFIGURATION # | |
937 | # Specifies how addresses are handled # | |
938 | ###################################################################### | |
939 | # THE ORDER IN WHICH THE ROUTERS ARE DEFINED IS IMPORTANT! # | |
940 | # An address is passed to each router in turn until it is accepted. # | |
941 | ###################################################################### | |
942 | ||
943 | begin routers | |
944 | ||
945 | ##################################################### | |
946 | ### end router/00_exim4-config_header | |
947 | ##################################################### | |
948 | ##################################################### | |
949 | ### router/100_exim4-config_domain_literal | |
950 | ##################################################### | |
951 | ||
952 | ### router/100_exim4-config_domain_literal | |
953 | ################################# | |
954 | ||
955 | # This router handles e-mail addresses in "domain literal" form like | |
956 | # <user@[10.11.12.13]>. The RFCs require this facility, but it is disabled | |
957 | # in the default config since it is seldomly used and frequently abused. | |
958 | # Domain literal support also needs to be enabled in the main config, | |
959 | # which is automatically done if you use the enable macro | |
960 | # MAIN_ALLOW_DOMAIN_LITERALS. | |
961 | ||
962 | .ifdef MAIN_ALLOW_DOMAIN_LITERALS | |
963 | domain_literal: | |
964 | debug_print = "R: domain_literal for $local_part@$domain" | |
965 | driver = ipliteral | |
966 | domains = ! +local_domains | |
967 | transport = remote_smtp | |
968 | .endif | |
969 | ##################################################### | |
970 | ### end router/100_exim4-config_domain_literal | |
971 | ##################################################### | |
972 | ##################################################### | |
973 | ### router/150_exim4-config_hubbed_hosts | |
974 | ##################################################### | |
975 | ||
976 | # router/150_exim4-config_hubbed_hosts | |
977 | ################################# | |
978 | ||
979 | # route specific domains manually. | |
980 | # | |
981 | # see exim4-config_files(5) and spec.txt chapter 20.3 through 20.7 for | |
982 | # more detailed documentation. | |
983 | ||
984 | hubbed_hosts: | |
985 | debug_print = "R: hubbed_hosts for $domain" | |
986 | driver = manualroute | |
987 | domains = "${if exists{CONFDIR/hubbed_hosts}\ | |
988 | {partial-lsearch;CONFDIR/hubbed_hosts}\ | |
989 | fail}" | |
990 | same_domain_copy_routing = yes | |
991 | route_data = ${lookup{$domain}partial-lsearch{CONFDIR/hubbed_hosts}} | |
992 | transport = remote_smtp | |
993 | ##################################################### | |
994 | ### end router/150_exim4-config_hubbed_hosts | |
995 | ##################################################### | |
996 | ##################################################### | |
997 | ### router/200_exim4-config_primary | |
998 | ##################################################### | |
999 | ||
1000 | ### router/200_exim4-config_primary | |
1001 | ################################# | |
1002 | # This file holds the primary router, responsible for nonlocal mails | |
1003 | ||
1004 | .ifdef DCconfig_internet | |
1005 | # configtype=internet | |
1006 | # | |
1007 | # deliver mail to the recipient if recipient domain is a domain we | |
1008 | # relay for. We do not ignore any target hosts here since delivering to | |
1009 | # a site local or even a link local address might be wanted here, and if | |
1010 | # such an address has found its way into the MX record of such a domain, | |
1011 | # the local admin is probably in a place where that broken MX record | |
1012 | # could be fixed. | |
1013 | ||
1014 | dnslookup_relay_to_domains: | |
1015 | debug_print = "R: dnslookup_relay_to_domains for $local_part@$domain" | |
1016 | driver = dnslookup | |
1017 | domains = ! +local_domains : +relay_to_domains | |
1018 | transport = remote_smtp | |
1019 | same_domain_copy_routing = yes | |
1020 | no_more | |
1021 | ||
1022 | # deliver mail directly to the recipient. This router is only reached | |
1023 | # for domains that we do not relay for. Since we most probably can't | |
1024 | # have broken MX records pointing to site local or link local IP | |
1025 | # addresses fixed, we ignore target hosts pointing to these addresses. | |
1026 | ||
1027 | dnslookup: | |
1028 | debug_print = "R: dnslookup for $local_part@$domain" | |
1029 | driver = dnslookup | |
1030 | domains = ! +local_domains | |
1031 | transport = remote_smtp | |
1032 | same_domain_copy_routing = yes | |
1033 | # ignore private rfc1918 and APIPA addresses | |
1034 | ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 192.168.0.0/16 :\ | |
1035 | 172.16.0.0/12 : 10.0.0.0/8 : 169.254.0.0/16 :\ | |
1036 | 255.255.255.255 | |
1037 | no_more | |
1038 | ||
1039 | .endif | |
1040 | ||
1041 | ||
1042 | .ifdef DCconfig_local | |
1043 | # configtype=local | |
1044 | # | |
1045 | # Stand-alone system, so generate an error for mail to a non-local domain | |
1046 | nonlocal: | |
1047 | debug_print = "R: nonlocal for $local_part@$domain" | |
1048 | driver = redirect | |
1049 | domains = ! +local_domains | |
1050 | allow_fail | |
1051 | data = :fail: Mailing to remote domains not supported | |
1052 | no_more | |
1053 | ||
1054 | .endif | |
1055 | ||
1056 | ||
1057 | .ifdef DCconfig_smarthost DCconfig_satellite | |
1058 | # configtype=smarthost or configtype=satellite | |
1059 | # | |
1060 | # Send all non-local mail to a single other machine (smarthost). | |
1061 | # | |
1062 | # This means _ALL_ non-local mail goes to the smarthost. This will most | |
1063 | # probably not do what you want for domains that are listed in | |
1064 | # relay_domains. The most typical use for relay_domains is to control | |
1065 | # relaying for incoming e-mail on secondary MX hosts. In that case, | |
1066 | # it doesn't make sense to send the mail to the smarthost since the | |
1067 | # smarthost will probably send the message right back here, causing a | |
1068 | # loop. | |
1069 | # | |
1070 | # If you want to use a smarthost while being secondary MX for some | |
1071 | # domains, you'll need to copy the dnslookup_relay_to_domains router | |
1072 | # here so that mail to relay_domains is handled separately. | |
1073 | ||
1074 | smarthost: | |
1075 | debug_print = "R: smarthost for $local_part@$domain" | |
1076 | driver = manualroute | |
1077 | domains = ! +local_domains | |
1078 | transport = remote_smtp_smarthost | |
1079 | route_list = * DCsmarthost byname | |
1080 | host_find_failed = defer | |
1081 | same_domain_copy_routing = yes | |
1082 | no_more | |
1083 | ||
1084 | .endif | |
1085 | ||
1086 | ||
1087 | # The "no_more" above means that all later routers are for | |
1088 | # domains in the local_domains list, i.e. just like Exim 3 directors. | |
1089 | ##################################################### | |
1090 | ### end router/200_exim4-config_primary | |
1091 | ##################################################### | |
1092 | ##################################################### | |
1093 | ### router/300_exim4-config_real_local | |
1094 | ##################################################### | |
1095 | ||
1096 | ### router/300_exim4-config_real_local | |
1097 | ################################# | |
1098 | ||
1099 | # This router allows reaching a local user while avoiding local | |
1100 | # processing. This can be used to inform a user of a broken .forward | |
1101 | # file, for example. The userforward router does this. | |
1102 | ||
1103 | COND_LOCAL_SUBMITTER = "\ | |
1104 | ${if match_ip{$sender_host_address}{:@[]}\ | |
1105 | {1}{0}\ | |
1106 | }" | |
1107 | ||
1108 | real_local: | |
1109 | debug_print = "R: real_local for $local_part@$domain" | |
1110 | driver = accept | |
1111 | domains = +local_domains | |
1112 | condition = COND_LOCAL_SUBMITTER | |
1113 | local_part_prefix = real- | |
1114 | check_local_user | |
1115 | transport = LOCAL_DELIVERY | |
1116 | ||
1117 | ##################################################### | |
1118 | ### end router/300_exim4-config_real_local | |
1119 | ##################################################### | |
1120 | ##################################################### | |
1121 | ### router/400_exim4-config_system_aliases | |
1122 | ##################################################### | |
1123 | ||
1124 | ### router/400_exim4-config_system_aliases | |
1125 | ################################# | |
1126 | ||
1127 | # This router handles aliasing using a traditional /etc/aliases file. | |
1128 | # | |
1129 | ##### NB You must ensure that /etc/aliases exists. It used to be the case | |
1130 | ##### NB that every Unix had that file, because it was the Sendmail default. | |
1131 | ##### NB These days, there are systems that don't have it. Your aliases | |
1132 | ##### NB file should at least contain an alias for "postmaster". | |
1133 | # | |
1134 | # This router handles the local part in a case-insensitive way which | |
1135 | # satisfies the RFCs requirement that postmaster be reachable regardless | |
1136 | # of case. If you decide to handle /etc/aliases in a caseful way, you | |
1137 | # need to make arrangements for a caseless postmaster. | |
1138 | # | |
1139 | # Delivery to arbitrary directories, files, and piping to programs in | |
1140 | # /etc/aliases is disabled per default. | |
1141 | # If that is a problem for you, see | |
1142 | # /usr/share/doc/exim4-base/README.Debian.gz | |
1143 | # for explanation and some workarounds. | |
1144 | ||
1145 | system_aliases: | |
1146 | debug_print = "R: system_aliases for $local_part@$domain" | |
1147 | driver = redirect | |
1148 | domains = +local_domains | |
1149 | allow_fail | |
1150 | allow_defer | |
1151 | data = ${lookup{$local_part}lsearch{/etc/aliases}} | |
1152 | .ifdef SYSTEM_ALIASES_USER | |
1153 | user = SYSTEM_ALIASES_USER | |
1154 | .endif | |
1155 | .ifdef SYSTEM_ALIASES_GROUP | |
1156 | group = SYSTEM_ALIASES_GROUP | |
1157 | .endif | |
1158 | .ifdef SYSTEM_ALIASES_FILE_TRANSPORT | |
1159 | file_transport = SYSTEM_ALIASES_FILE_TRANSPORT | |
1160 | .endif | |
1161 | .ifdef SYSTEM_ALIASES_PIPE_TRANSPORT | |
1162 | pipe_transport = SYSTEM_ALIASES_PIPE_TRANSPORT | |
1163 | .endif | |
1164 | .ifdef SYSTEM_ALIASES_DIRECTORY_TRANSPORT | |
1165 | directory_transport = SYSTEM_ALIASES_DIRECTORY_TRANSPORT | |
1166 | .endif | |
1167 | ##################################################### | |
1168 | ### end router/400_exim4-config_system_aliases | |
1169 | ##################################################### | |
1170 | ##################################################### | |
1171 | ### router/500_exim4-config_hubuser | |
1172 | ##################################################### | |
1173 | ||
1174 | ### router/500_exim4-config_hubuser | |
1175 | ################################# | |
1176 | ||
1177 | .ifdef DCconfig_satellite | |
1178 | # This router is only used for configtype=satellite. | |
1179 | # It takes care to route all mail targetted to <somelocaluser@this.machine> | |
1180 | # to the host where we read our mail | |
1181 | # | |
1182 | hub_user: | |
1183 | debug_print = "R: hub_user for $local_part@$domain" | |
1184 | driver = redirect | |
1185 | domains = +local_domains | |
1186 | data = ${local_part}@DCreadhost | |
1187 | check_local_user | |
1188 | ||
1189 | # Grab the redirected mail and deliver it. | |
1190 | # This is a duplicate of the smarthost router, needed because | |
1191 | # DCreadhost might end up as part of +local_domains | |
1192 | hub_user_smarthost: | |
1193 | debug_print = "R: hub_user_smarthost for $local_part@$domain" | |
1194 | driver = manualroute | |
1195 | domains = DCreadhost | |
1196 | transport = remote_smtp_smarthost | |
1197 | route_list = * DCsmarthost byname | |
1198 | host_find_failed = defer | |
1199 | same_domain_copy_routing = yes | |
1200 | check_local_user | |
1201 | .endif | |
1202 | ||
1203 | ||
1204 | ##################################################### | |
1205 | ### end router/500_exim4-config_hubuser | |
1206 | ##################################################### | |
1207 | ##################################################### | |
1208 | ### router/600_exim4-config_userforward | |
1209 | ##################################################### | |
1210 | ||
1211 | ### router/600_exim4-config_userforward | |
1212 | ################################# | |
1213 | ||
1214 | # This router handles forwarding using traditional .forward files in users' | |
1215 | # home directories. It also allows mail filtering with a forward file | |
1216 | # starting with the string "# Exim filter" or "# Sieve filter". | |
1217 | # | |
1218 | # The no_verify setting means that this router is skipped when Exim is | |
1219 | # verifying addresses. Similarly, no_expn means that this router is skipped if | |
1220 | # Exim is processing an EXPN command. | |
1221 | # | |
1222 | # The check_ancestor option means that if the forward file generates an | |
1223 | # address that is an ancestor of the current one, the current one gets | |
1224 | # passed on instead. This covers the case where A is aliased to B and B | |
1225 | # has a .forward file pointing to A. | |
1226 | # | |
1227 | # The four transports specified at the end are those that are used when | |
1228 | # forwarding generates a direct delivery to a directory, or a file, or to a | |
1229 | # pipe, or sets up an auto-reply, respectively. | |
1230 | # | |
1231 | userforward: | |
1232 | debug_print = "R: userforward for $local_part@$domain" | |
1233 | driver = redirect | |
1234 | domains = +local_domains | |
1235 | check_local_user | |
1236 | file = $home/.forward | |
1237 | require_files = $local_part:$home/.forward | |
1238 | no_verify | |
1239 | no_expn | |
1240 | check_ancestor | |
1241 | allow_filter | |
1242 | forbid_smtp_code = true | |
1243 | directory_transport = address_directory | |
1244 | file_transport = address_file | |
1245 | pipe_transport = address_pipe | |
1246 | reply_transport = address_reply | |
1247 | skip_syntax_errors | |
1248 | syntax_errors_to = real-$local_part@$domain | |
1249 | syntax_errors_text = \ | |
1250 | This is an automatically generated message. An error has\n\ | |
1251 | been found in your .forward file. Details of the error are\n\ | |
1252 | reported below. While this error persists, you will receive\n\ | |
1253 | a copy of this message for every message that is addressed\n\ | |
1254 | to you. If your .forward file is a filter file, or if it is\n\ | |
1255 | a non-filter file containing no valid forwarding addresses,\n\ | |
1256 | a copy of each incoming message will be put in your normal\n\ | |
1257 | mailbox. If a non-filter file contains at least one valid\n\ | |
1258 | forwarding address, forwarding to the valid addresses will\n\ | |
1259 | happen, and those will be the only deliveries that occur. | |
1260 | ||
1261 | ##################################################### | |
1262 | ### end router/600_exim4-config_userforward | |
1263 | ##################################################### | |
1264 | ##################################################### | |
1265 | ### router/700_exim4-config_procmail | |
1266 | ##################################################### | |
1267 | ||
1268 | procmail: | |
1269 | debug_print = "R: procmail for $local_part@$domain" | |
1270 | driver = accept | |
1271 | domains = +local_domains | |
1272 | check_local_user | |
1273 | transport = procmail_pipe | |
1274 | # emulate OR with "if exists"-expansion | |
1275 | require_files = ${local_part}:\ | |
1276 | ${if exists{/etc/procmailrc}\ | |
1277 | {/etc/procmailrc}{${home}/.procmailrc}}:\ | |
1278 | +/usr/bin/procmail | |
1279 | no_verify | |
1280 | no_expn | |
1281 | ||
1282 | ##################################################### | |
1283 | ### end router/700_exim4-config_procmail | |
1284 | ##################################################### | |
1285 | ##################################################### | |
1286 | ### router/800_exim4-config_maildrop | |
1287 | ##################################################### | |
1288 | ||
1289 | ### router/800_exim4-config_maildrop | |
1290 | ################################# | |
1291 | ||
1292 | maildrop: | |
1293 | debug_print = "R: maildrop for $local_part@$domain" | |
1294 | driver = accept | |
1295 | domains = +local_domains | |
1296 | check_local_user | |
1297 | transport = maildrop_pipe | |
1298 | require_files = ${local_part}:${home}/.mailfilter:+/usr/bin/maildrop | |
1299 | no_verify | |
1300 | no_expn | |
1301 | ||
1302 | ##################################################### | |
1303 | ### end router/800_exim4-config_maildrop | |
1304 | ##################################################### | |
1305 | ##################################################### | |
1306 | ### router/850_exim4-config_lowuid | |
1307 | ##################################################### | |
1308 | ||
1309 | ### router/850_exim4-config_lowuid | |
1310 | ################################# | |
1311 | ||
1312 | .ifndef FIRST_USER_ACCOUNT_UID | |
1313 | FIRST_USER_ACCOUNT_UID = 0 | |
1314 | .endif | |
1315 | ||
1316 | .ifndef DEFAULT_SYSTEM_ACCOUNT_ALIAS | |
1317 | DEFAULT_SYSTEM_ACCOUNT_ALIAS = :fail: no mail to system accounts | |
1318 | .endif | |
1319 | ||
1320 | COND_SYSTEM_USER_AND_REMOTE_SUBMITTER = "\ | |
1321 | ${if and{{! match_ip{$sender_host_address}{:@[]}}\ | |
1322 | {<{$local_user_uid}{FIRST_USER_ACCOUNT_UID}}}\ | |
1323 | {1}{0}\ | |
1324 | }" | |
1325 | ||
1326 | lowuid_aliases: | |
1327 | debug_print = "R: lowuid_aliases for $local_part@$domain (UID $local_user_uid)" | |
1328 | check_local_user | |
1329 | driver = redirect | |
1330 | allow_fail | |
1331 | domains = +local_domains | |
1332 | condition = COND_SYSTEM_USER_AND_REMOTE_SUBMITTER | |
1333 | data = ${if exists{/etc/exim4/lowuid-aliases}\ | |
1334 | {${lookup{$local_part}lsearch{/etc/exim4/lowuid-aliases}\ | |
1335 | {$value}{DEFAULT_SYSTEM_ACCOUNT_ALIAS}}}{DEFAULT_SYSTEM_ACCOUNT_ALIAS}} | |
1336 | ##################################################### | |
1337 | ### end router/850_exim4-config_lowuid | |
1338 | ##################################################### | |
1339 | ##################################################### | |
1340 | ### router/900_exim4-config_local_user | |
1341 | ##################################################### | |
1342 | ||
1343 | ### router/900_exim4-config_local_user | |
1344 | ################################# | |
1345 | ||
1346 | # This router matches local user mailboxes. If the router fails, the error | |
1347 | # message is "Unknown user". | |
1348 | ||
1349 | local_user: | |
1350 | debug_print = "R: local_user for $local_part@$domain" | |
1351 | driver = accept | |
1352 | domains = +local_domains | |
1353 | check_local_user | |
1354 | local_parts = ! root | |
1355 | transport = LOCAL_DELIVERY | |
1356 | cannot_route_message = Unknown user | |
1357 | ##################################################### | |
1358 | ### end router/900_exim4-config_local_user | |
1359 | ##################################################### | |
1360 | ##################################################### | |
1361 | ### router/mmm_mail4root | |
1362 | ##################################################### | |
1363 | ||
1364 | ### router/mmm_mail4root | |
1365 | ################################# | |
1366 | # deliver mail addressed to root to /var/mail/mail as user mail:mail | |
1367 | # if it was not redirected in /etc/aliases or by other means | |
1368 | # Exim cannot deliver as root since 4.24 (FIXED_NEVER_USERS) | |
1369 | ||
1370 | mail4root: | |
1371 | debug_print = "R: mail4root for $local_part@$domain" | |
1372 | driver = redirect | |
1373 | domains = +local_domains | |
1374 | data = /var/mail/mail | |
1375 | file_transport = address_file | |
1376 | local_parts = root | |
1377 | user = mail | |
1378 | group = mail | |
1379 | ||
1380 | ##################################################### | |
1381 | ### end router/mmm_mail4root | |
1382 | ##################################################### | |
1383 | ##################################################### | |
1384 | ### transport/00_exim4-config_header | |
1385 | ##################################################### | |
1386 | ||
1387 | ###################################################################### | |
1388 | # TRANSPORTS CONFIGURATION # | |
1389 | ###################################################################### | |
1390 | # ORDER DOES NOT MATTER # | |
1391 | # Only one appropriate transport is called for each delivery. # | |
1392 | ###################################################################### | |
1393 | ||
1394 | # A transport is used only when referenced from a router that successfully | |
1395 | # handles an address. | |
1396 | ||
1397 | begin transports | |
1398 | ||
1399 | ##################################################### | |
1400 | ### end transport/00_exim4-config_header | |
1401 | ##################################################### | |
1402 | ##################################################### | |
1403 | ### transport/10_exim4-config_transport-macros | |
1404 | ##################################################### | |
1405 | ||
1406 | ### transport/10_exim4-config_transport-macros | |
1407 | ################################# | |
1408 | ||
1409 | .ifdef HIDE_MAILNAME | |
1410 | REMOTE_SMTP_HEADERS_REWRITE=*@+local_domains $1@DCreadhost frs : *@ETC_MAILNAME $1@DCreadhost frs | |
1411 | REMOTE_SMTP_RETURN_PATH=${if match_domain{$sender_address_domain}{+local_domains}{${sender_address_local_part}@DCreadhost}{${if match_domain{$sender_address_domain}{ETC_MAILNAME}{${sender_address_local_part}@DCreadhost}fail}}} | |
1412 | .endif | |
1413 | ||
1414 | .ifdef REMOTE_SMTP_HELO_FROM_DNS | |
1415 | REMOTE_SMTP_HELO_DATA=${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}} | |
1416 | .endif | |
1417 | ##################################################### | |
1418 | ### end transport/10_exim4-config_transport-macros | |
1419 | ##################################################### | |
1420 | ##################################################### | |
1421 | ### transport/30_exim4-config_address_file | |
1422 | ##################################################### | |
1423 | ||
1424 | # This transport is used for handling deliveries directly to files that are | |
1425 | # generated by aliasing or forwarding. | |
1426 | # | |
1427 | address_file: | |
1428 | debug_print = "T: address_file for $local_part@$domain" | |
1429 | driver = appendfile | |
1430 | delivery_date_add | |
1431 | envelope_to_add | |
1432 | return_path_add | |
1433 | ||
1434 | ##################################################### | |
1435 | ### end transport/30_exim4-config_address_file | |
1436 | ##################################################### | |
1437 | ##################################################### | |
1438 | ### transport/30_exim4-config_address_pipe | |
1439 | ##################################################### | |
1440 | ||
1441 | # This transport is used for handling pipe deliveries generated by | |
1442 | # .forward files. If the commands fails and produces any output on standard | |
1443 | # output or standard error streams, the output is returned to the sender | |
1444 | # of the message as a delivery error. | |
1445 | address_pipe: | |
1446 | debug_print = "T: address_pipe for $local_part@$domain" | |
1447 | driver = pipe | |
1448 | return_fail_output | |
1449 | ||
1450 | ##################################################### | |
1451 | ### end transport/30_exim4-config_address_pipe | |
1452 | ##################################################### | |
1453 | ##################################################### | |
1454 | ### transport/30_exim4-config_address_reply | |
1455 | ##################################################### | |
1456 | ||
1457 | # This transport is used for handling autoreplies generated by the filtering | |
1458 | # option of the userforward router. | |
1459 | # | |
1460 | address_reply: | |
1461 | debug_print = "T: autoreply for $local_part@$domain" | |
1462 | driver = autoreply | |
1463 | ||
1464 | ##################################################### | |
1465 | ### end transport/30_exim4-config_address_reply | |
1466 | ##################################################### | |
1467 | ##################################################### | |
1468 | ### transport/30_exim4-config_mail_spool | |
1469 | ##################################################### | |
1470 | ||
1471 | ### transport/30_exim4-config_mail_spool | |
1472 | ||
1473 | # This transport is used for local delivery to user mailboxes in traditional | |
1474 | # BSD mailbox format. | |
1475 | # | |
1476 | mail_spool: | |
1477 | debug_print = "T: appendfile for $local_part@$domain" | |
1478 | driver = appendfile | |
1479 | file = /var/mail/$local_part | |
1480 | delivery_date_add | |
1481 | envelope_to_add | |
1482 | return_path_add | |
1483 | group = mail | |
1484 | mode = 0660 | |
1485 | mode_fail_narrower = false | |
1486 | ||
1487 | ##################################################### | |
1488 | ### end transport/30_exim4-config_mail_spool | |
1489 | ##################################################### | |
1490 | ##################################################### | |
1491 | ### transport/30_exim4-config_maildir_home | |
1492 | ##################################################### | |
1493 | ||
1494 | ### transport/30_exim4-config_maildir_home | |
1495 | ################################# | |
1496 | ||
1497 | # Use this instead of mail_spool if you want to to deliver to Maildir in | |
1498 | # home-directory - change the definition of LOCAL_DELIVERY | |
1499 | # | |
1500 | maildir_home: | |
1501 | debug_print = "T: maildir_home for $local_part@$domain" | |
1502 | driver = appendfile | |
1503 | .ifdef MAILDIR_HOME_MAILDIR_LOCATION | |
1504 | directory = MAILDIR_HOME_MAILDIR_LOCATION | |
1505 | .else | |
1506 | directory = $home/Maildir | |
1507 | .endif | |
1508 | .ifdef MAILDIR_HOME_CREATE_DIRECTORY | |
1509 | create_directory | |
1510 | .endif | |
1511 | .ifdef MAILDIR_HOME_CREATE_FILE | |
1512 | create_file = MAILDIR_HOME_CREATE_FILE | |
1513 | .endif | |
1514 | delivery_date_add | |
1515 | envelope_to_add | |
1516 | return_path_add | |
1517 | maildir_format | |
1518 | .ifdef MAILDIR_HOME_DIRECTORY_MODE | |
1519 | directory_mode = MAILDIR_HOME_DIRECTORY_MODE | |
1520 | .else | |
1521 | directory_mode = 0700 | |
1522 | .endif | |
1523 | .ifdef MAILDIR_HOME_MODE | |
1524 | mode = MAILDIR_HOME_MODE | |
1525 | .else | |
1526 | mode = 0600 | |
1527 | .endif | |
1528 | mode_fail_narrower = false | |
1529 | # This transport always chdirs to $home before trying to deliver. If | |
1530 | # $home is not accessible, this chdir fails and prevents delivery. | |
1531 | # If you are in a setup where home directories might not be | |
1532 | # accessible, uncomment the current_directory line below. | |
1533 | # current_directory = / | |
1534 | ##################################################### | |
1535 | ### end transport/30_exim4-config_maildir_home | |
1536 | ##################################################### | |
1537 | ##################################################### | |
1538 | ### transport/30_exim4-config_maildrop_pipe | |
1539 | ##################################################### | |
1540 | ||
1541 | maildrop_pipe: | |
1542 | debug_print = "T: maildrop_pipe for $local_part@$domain" | |
1543 | driver = pipe | |
1544 | path = "/bin:/usr/bin:/usr/local/bin" | |
1545 | command = "/usr/bin/maildrop" | |
1546 | return_path_add | |
1547 | delivery_date_add | |
1548 | envelope_to_add | |
1549 | ||
1550 | ##################################################### | |
1551 | ### end transport/30_exim4-config_maildrop_pipe | |
1552 | ##################################################### | |
1553 | ##################################################### | |
1554 | ### transport/30_exim4-config_procmail_pipe | |
1555 | ##################################################### | |
1556 | ||
1557 | procmail_pipe: | |
1558 | debug_print = "T: procmail_pipe for $local_part@$domain" | |
1559 | driver = pipe | |
1560 | path = "/bin:/usr/bin:/usr/local/bin" | |
1561 | command = "/usr/bin/procmail" | |
1562 | return_path_add | |
1563 | delivery_date_add | |
1564 | envelope_to_add | |
1565 | ||
1566 | ##################################################### | |
1567 | ### end transport/30_exim4-config_procmail_pipe | |
1568 | ##################################################### | |
1569 | ##################################################### | |
1570 | ### transport/30_exim4-config_remote_smtp | |
1571 | ##################################################### | |
1572 | ||
1573 | ### transport/30_exim4-config_remote_smtp | |
1574 | ################################# | |
1575 | # This transport is used for delivering messages over SMTP connections. | |
1576 | ||
1577 | remote_smtp: | |
1578 | debug_print = "T: remote_smtp for $local_part@$domain" | |
1579 | driver = smtp | |
1580 | .ifdef REMOTE_SMTP_HOSTS_AVOID_TLS | |
1581 | hosts_avoid_tls = REMOTE_SMTP_HOSTS_AVOID_TLS | |
1582 | .endif | |
1583 | .ifdef REMOTE_SMTP_HEADERS_REWRITE | |
1584 | headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE | |
1585 | .endif | |
1586 | .ifdef REMOTE_SMTP_RETURN_PATH | |
1587 | return_path = REMOTE_SMTP_RETURN_PATH | |
1588 | .endif | |
1589 | .ifdef REMOTE_SMTP_HELO_FROM_DNS | |
1590 | helo_data=REMOTE_SMTP_HELO_DATA | |
1591 | .endif | |
1592 | ##################################################### | |
1593 | ### end transport/30_exim4-config_remote_smtp | |
1594 | ##################################################### | |
1595 | ##################################################### | |
1596 | ### transport/30_exim4-config_remote_smtp_smarthost | |
1597 | ##################################################### | |
1598 | ||
1599 | ### transport/30_exim4-config_remote_smtp_smarthost | |
1600 | ################################# | |
1601 | ||
1602 | # This transport is used for delivering messages over SMTP connections | |
1603 | # to a smarthost. The local host tries to authenticate. | |
1604 | # This transport is used for smarthost and satellite configurations. | |
1605 | ||
1606 | remote_smtp_smarthost: | |
1607 | debug_print = "T: remote_smtp_smarthost for $local_part@$domain" | |
1608 | driver = smtp | |
1609 | hosts_try_auth = <; ${if exists{CONFDIR/passwd.client} \ | |
1610 | {\ | |
1611 | ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$host_address}}\ | |
1612 | }\ | |
1613 | {} \ | |
1614 | } | |
1615 | .ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS | |
1616 | hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS | |
1617 | .endif | |
1618 | .ifdef REMOTE_SMTP_HEADERS_REWRITE | |
1619 | headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE | |
1620 | .endif | |
1621 | .ifdef REMOTE_SMTP_RETURN_PATH | |
1622 | return_path = REMOTE_SMTP_RETURN_PATH | |
1623 | .endif | |
1624 | .ifdef REMOTE_SMTP_HELO_FROM_DNS | |
1625 | helo_data=REMOTE_SMTP_HELO_DATA | |
1626 | .endif | |
1627 | ##################################################### | |
1628 | ### end transport/30_exim4-config_remote_smtp_smarthost | |
1629 | ##################################################### | |
1630 | ##################################################### | |
1631 | ### transport/35_exim4-config_address_directory | |
1632 | ##################################################### | |
1633 | # This transport is used for handling file addresses generated by alias | |
1634 | # or .forward files if the path ends in "/", which causes it to be treated | |
1635 | # as a directory name rather than a file name. | |
1636 | ||
1637 | address_directory: | |
1638 | debug_print = "T: address_directory for $local_part@$domain" | |
1639 | driver = appendfile | |
1640 | delivery_date_add | |
1641 | envelope_to_add | |
1642 | return_path_add | |
1643 | check_string = "" | |
1644 | escape_string = "" | |
1645 | maildir_format | |
1646 | ||
1647 | ##################################################### | |
1648 | ### end transport/35_exim4-config_address_directory | |
1649 | ##################################################### | |
1650 | ##################################################### | |
1651 | ### retry/00_exim4-config_header | |
1652 | ##################################################### | |
1653 | ||
1654 | ###################################################################### | |
1655 | # RETRY CONFIGURATION # | |
1656 | ###################################################################### | |
1657 | ||
1658 | begin retry | |
1659 | ||
1660 | ##################################################### | |
1661 | ### end retry/00_exim4-config_header | |
1662 | ##################################################### | |
1663 | ##################################################### | |
1664 | ### retry/30_exim4-config | |
1665 | ##################################################### | |
1666 | ||
1667 | ### retry/30_exim4-config | |
1668 | ################################# | |
1669 | ||
1670 | # This single retry rule applies to all domains and all errors. It specifies | |
1671 | # retries every 15 minutes for 2 hours, then increasing retry intervals, | |
1672 | # starting at 1 hour and increasing each time by a factor of 1.5, up to 16 | |
1673 | # hours, then retries every 6 hours until 4 days have passed since the first | |
1674 | # failed delivery. | |
1675 | ||
1676 | # Please note that these rules only limit the frequenzy of retries, the | |
1677 | # effective retry-time depends on the frequenzy of queue-running, too. | |
1678 | # See QUEUEINTERVAL in /etc/default/exim4. | |
1679 | ||
1680 | # Address or Domain Error Retries | |
1681 | # ----------------- ----- ------- | |
1682 | ||
1683 | * * F,2h,15m; G,16h,1h,1.5; F,4d,6h | |
1684 | ||
1685 | ##################################################### | |
1686 | ### end retry/30_exim4-config | |
1687 | ##################################################### | |
1688 | ##################################################### | |
1689 | ### rewrite/00_exim4-config_header | |
1690 | ##################################################### | |
1691 | ||
1692 | ###################################################################### | |
1693 | # REWRITE CONFIGURATION # | |
1694 | ###################################################################### | |
1695 | ||
1696 | begin rewrite | |
1697 | ||
1698 | ##################################################### | |
1699 | ### end rewrite/00_exim4-config_header | |
1700 | ##################################################### | |
1701 | ##################################################### | |
1702 | ### rewrite/31_exim4-config_rewriting | |
1703 | ##################################################### | |
1704 | ||
1705 | ### rewrite/31_exim4-config_rewriting | |
1706 | ################################# | |
1707 | ||
1708 | # This rewriting rule is particularily useful for dialup users who | |
1709 | # don't have their own domain, but could be useful for anyone. | |
1710 | # It looks up the real address of all local users in a file | |
1711 | .ifndef NO_EAA_REWRITE_REWRITE | |
1712 | *@+local_domains "${lookup{${local_part}}lsearch{/etc/email-addresses}\ | |
1713 | {$value}fail}" Ffrs | |
1714 | # identical rewriting rule for /etc/mailname | |
1715 | *@ETC_MAILNAME "${lookup{${local_part}}lsearch{/etc/email-addresses}\ | |
1716 | {$value}fail}" Ffrs | |
1717 | .endif | |
1718 | ||
1719 | ||
1720 | ##################################################### | |
1721 | ### end rewrite/31_exim4-config_rewriting | |
1722 | ##################################################### | |
1723 | ##################################################### | |
1724 | ### auth/00_exim4-config_header | |
1725 | ##################################################### | |
1726 | ||
1727 | ###################################################################### | |
1728 | # AUTHENTICATION CONFIGURATION # | |
1729 | ###################################################################### | |
1730 | ||
1731 | begin authenticators | |
1732 | ||
1733 | ||
1734 | ##################################################### | |
1735 | ### end auth/00_exim4-config_header | |
1736 | ##################################################### | |
1737 | ##################################################### | |
1738 | ### auth/30_exim4-config_examples | |
1739 | ##################################################### | |
1740 | ||
1741 | ### auth/30_exim4-config_examples | |
1742 | ################################# | |
1743 | ||
1744 | # The examples below are for server side authentication, when the | |
1745 | # local exim is SMTP server and clients authenticate to the local exim. | |
1746 | ||
1747 | # They allow two styles of plain-text authentication against an | |
1748 | # CONFDIR/passwd file whose syntax is described in exim4_passwd(5). | |
1749 | ||
1750 | # Hosts that are allowed to use AUTH are defined by the | |
1751 | # auth_advertise_hosts option in the main configuration. The default is | |
1752 | # "*", which allows authentication to all hosts over all kinds of | |
1753 | # connections if there is at least one authenticator defined here. | |
1754 | # Authenticators which rely on unencrypted clear text passwords don't | |
1755 | # advertise on unencrypted connections by default. Thus, it might be | |
1756 | # wise to set up TLS to allow encrypted connections. If TLS cannot be | |
1757 | # used for some reason, you can set AUTH_SERVER_ALLOW_NOTLS_PASSWORDS to | |
1758 | # advertise unencrypted clear text password based authenticators on all | |
1759 | # connections. As this is severely reducing security, using TLS is | |
1760 | # preferred over allowing clear text password based authenticators on | |
1761 | # unencrypted connections. | |
1762 | ||
1763 | # PLAIN authentication has no server prompts. The client sends its | |
1764 | # credentials in one lump, containing an authorization ID (which we do not | |
1765 | # use), an authentication ID, and a password. The latter two appear as | |
1766 | # $auth2 and $auth3 in the configuration and should be checked against a | |
1767 | # valid username and password. In a real configuration you would typically | |
1768 | # use $auth2 as a lookup key, and compare $auth3 against the result of the | |
1769 | # lookup, perhaps using the crypteq{}{} condition. | |
1770 | ||
1771 | # plain_server: | |
1772 | # driver = plaintext | |
1773 | # public_name = PLAIN | |
1774 | # server_condition = "${if crypteq{$auth3}{${extract{1}{:}{${lookup{$auth2}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}" | |
1775 | # server_set_id = $auth2 | |
1776 | # server_prompts = : | |
1777 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1778 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1779 | # .endif | |
1780 | ||
1781 | # LOGIN authentication has traditional prompts and responses. There is no | |
1782 | # authorization ID in this mechanism, so unlike PLAIN the username and | |
1783 | # password are $auth1 and $auth2. Apart from that you can use the same | |
1784 | # server_condition setting for both authenticators. | |
1785 | ||
1786 | # login_server: | |
1787 | # driver = plaintext | |
1788 | # public_name = LOGIN | |
1789 | # server_prompts = "Username:: : Password::" | |
1790 | # server_condition = "${if crypteq{$auth2}{${extract{1}{:}{${lookup{$auth1}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}" | |
1791 | # server_set_id = $auth1 | |
1792 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1793 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1794 | # .endif | |
1795 | # | |
1796 | # cram_md5_server: | |
1797 | # driver = cram_md5 | |
1798 | # public_name = CRAM-MD5 | |
1799 | # server_secret = ${extract{2}{:}{${lookup{$auth1}lsearch{CONFDIR/passwd}{$value}fail}}} | |
1800 | # server_set_id = $auth1 | |
1801 | ||
1802 | # Here is an example of CRAM-MD5 authentication against PostgreSQL: | |
1803 | # | |
1804 | # psqldb_auth_server: | |
1805 | # driver = cram_md5 | |
1806 | # public_name = CRAM-MD5 | |
1807 | # server_secret = ${lookup pgsql{SELECT pw FROM users WHERE username = '${quote_pgsql:$auth1}'}{$value}fail} | |
1808 | # server_set_id = $auth1 | |
1809 | ||
1810 | # Authenticate against local passwords using sasl2-bin | |
1811 | # Requires exim_uid to be a member of sasl group, see README.Debian.gz | |
1812 | # plain_saslauthd_server: | |
1813 | # driver = plaintext | |
1814 | # public_name = PLAIN | |
1815 | # server_condition = ${if saslauthd{{$auth2}{$auth3}}{1}{0}} | |
1816 | # server_set_id = $auth2 | |
1817 | # server_prompts = : | |
1818 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1819 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1820 | # .endif | |
1821 | # | |
1822 | # login_saslauthd_server: | |
1823 | # driver = plaintext | |
1824 | # public_name = LOGIN | |
1825 | # server_prompts = "Username:: : Password::" | |
1826 | # # don't send system passwords over unencrypted connections | |
1827 | # server_condition = ${if saslauthd{{$auth1}{$auth2}}{1}{0}} | |
1828 | # server_set_id = $auth1 | |
1829 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1830 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1831 | # .endif | |
1832 | # | |
1833 | # ntlm_sasl_server: | |
1834 | # driver = cyrus_sasl | |
1835 | # public_name = NTLM | |
1836 | # server_realm = <short main hostname> | |
1837 | # server_set_id = $auth1 | |
1838 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1839 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1840 | # .endif | |
1841 | # | |
1842 | # digest_md5_sasl_server: | |
1843 | # driver = cyrus_sasl | |
1844 | # public_name = DIGEST-MD5 | |
1845 | # server_realm = <short main hostname> | |
1846 | # server_set_id = $auth1 | |
1847 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1848 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1849 | # .endif | |
1850 | ||
1851 | # Authentcate against cyrus-sasl | |
1852 | # This is mainly untested, please report any problems to | |
1853 | # pkg-exim4-users@lists.alioth.debian.org. | |
1854 | # cram_md5_sasl_server: | |
1855 | # driver = cyrus_sasl | |
1856 | # public_name = CRAM-MD5 | |
1857 | # server_realm = <short main hostname> | |
1858 | # server_set_id = $auth1 | |
1859 | # | |
1860 | # plain_sasl_server: | |
1861 | # driver = cyrus_sasl | |
1862 | # public_name = PLAIN | |
1863 | # server_realm = <short main hostname> | |
1864 | # server_set_id = $auth1 | |
1865 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1866 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1867 | # .endif | |
1868 | # | |
1869 | # login_sasl_server: | |
1870 | # driver = cyrus_sasl | |
1871 | # public_name = LOGIN | |
1872 | # server_realm = <short main hostname> | |
1873 | # server_set_id = $auth1 | |
1874 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1875 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1876 | # .endif | |
1877 | ||
1878 | # Authenticate against courier authdaemon | |
1879 | ||
1880 | # This is now the (working!) example from | |
1881 | # http://www.exim.org/eximwiki/FAQ/Policy_controls/Q0730 | |
1882 | # Possible pitfall: access rights on /var/run/courier/authdaemon/socket. | |
1883 | # plain_courier_authdaemon: | |
1884 | # driver = plaintext | |
1885 | # public_name = PLAIN | |
1886 | # server_condition = \ | |
1887 | # ${extract {ADDRESS} \ | |
1888 | # {${readsocket{/var/run/courier/authdaemon/socket} \ | |
1889 | # {AUTH ${strlen:exim\nlogin\n$auth2\n$auth3\n}\nexim\nlogin\n$auth2\n$auth3\n} }} \ | |
1890 | # {yes} \ | |
1891 | # fail} | |
1892 | # server_set_id = $auth2 | |
1893 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1894 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1895 | # .endif | |
1896 | ||
1897 | # login_courier_authdaemon: | |
1898 | # driver = plaintext | |
1899 | # public_name = LOGIN | |
1900 | # server_prompts = Username:: : Password:: | |
1901 | # server_condition = \ | |
1902 | # ${extract {ADDRESS} \ | |
1903 | # {${readsocket{/var/run/courier/authdaemon/socket} \ | |
1904 | # {AUTH ${strlen:exim\nlogin\n$auth1\n$auth2\n}\nexim\nlogin\n$auth1\n$auth2\n} }} \ | |
1905 | # {yes} \ | |
1906 | # fail} | |
1907 | # server_set_id = $auth1 | |
1908 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1909 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1910 | # .endif | |
1911 | ||
1912 | # This one is a bad hack to support the broken version 4.xx of | |
1913 | # Microsoft Outlook Express which violates the RFCs by demanding | |
1914 | # "250-AUTH=" instead of "250-AUTH ". | |
1915 | # If your list of offered authenticators is other than PLAIN and LOGIN, | |
1916 | # you need to adapt the public_name line manually. | |
1917 | # It has to be the last authenticator to work and has not been tested | |
1918 | # well. Use at your own risk. | |
1919 | # See the thread entry point from | |
1920 | # http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050214/msg00213.html | |
1921 | # for the related discussion on the exim-users mailing list. | |
1922 | # Thanks to Fred Viles for this great work. | |
1923 | ||
1924 | # support_broken_outlook_express_4_server: | |
1925 | # driver = plaintext | |
1926 | # public_name = "\r\n250-AUTH=PLAIN LOGIN" | |
1927 | # server_prompts = User Name : Password | |
1928 | # server_condition = no | |
1929 | # .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS | |
1930 | # server_advertise_condition = ${if eq{$tls_cipher}{}{}{*}} | |
1931 | # .endif | |
1932 | ||
1933 | ############## | |
1934 | # See /usr/share/doc/exim4-base/README.Debian.gz | |
1935 | ############## | |
1936 | ||
1937 | # These examples below are the equivalent for client side authentication. | |
1938 | # They get the passwords from CONFDIR/passwd.client, whose format is | |
1939 | # defined in exim4_passwd_client(5) | |
1940 | ||
1941 | # Because AUTH PLAIN and AUTH LOGIN send the password in clear, we | |
1942 | # only allow these mechanisms over encrypted connections by default. | |
1943 | # You can set AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS to allow unencrypted | |
1944 | # clear text password authentication on all connections. | |
1945 | ||
1946 | cram_md5: | |
1947 | driver = cram_md5 | |
1948 | public_name = CRAM-MD5 | |
1949 | client_name = ${extract{1}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}} | |
1950 | client_secret = ${extract{2}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}} | |
1951 | ||
1952 | # this returns the matching line from passwd.client and doubles all ^ | |
1953 | PASSWDLINE=${sg{\ | |
1954 | ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}\ | |
1955 | }\ | |
1956 | {\\N[\\^]\\N}\ | |
1957 | {^^}\ | |
1958 | } | |
1959 | ||
1960 | plain: | |
1961 | driver = plaintext | |
1962 | public_name = PLAIN | |
1963 | .ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS | |
1964 | client_send = "<; ${if !eq{$tls_cipher}{}\ | |
1965 | {^${extract{1}{:}{PASSWDLINE}}\ | |
1966 | ^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}\ | |
1967 | }fail}" | |
1968 | .else | |
1969 | client_send = "<; ^${extract{1}{:}{PASSWDLINE}}\ | |
1970 | ^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" | |
1971 | .endif | |
1972 | ||
1973 | login: | |
1974 | driver = plaintext | |
1975 | public_name = LOGIN | |
1976 | .ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS | |
1977 | # Return empty string if not non-TLS AND looking up $host in passwd-file | |
1978 | # yields a non-empty string; fail otherwise. | |
1979 | client_send = "<; ${if and{\ | |
1980 | {!eq{$tls_cipher}{}}\ | |
1981 | {!eq{PASSWDLINE}{}}\ | |
1982 | }\ | |
1983 | {}fail}\ | |
1984 | ; ${extract{1}{::}{PASSWDLINE}}\ | |
1985 | ; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" | |
1986 | .else | |
1987 | # Return empty string if looking up $host in passwd-file yields a | |
1988 | # non-empty string; fail otherwise. | |
1989 | client_send = "<; ${if !eq{PASSWDLINE}{}\ | |
1990 | {}fail}\ | |
1991 | ; ${extract{1}{::}{PASSWDLINE}}\ | |
1992 | ; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" | |
1993 | .endif | |
1994 | ##################################################### | |
1995 | ### end auth/30_exim4-config_examples | |
1996 | ##################################################### |