debian/debconf/conf.d/main/02_exim4-config_options

   1
   2 ### main/02_exim4-config_options
   3 #################################
   4
   5
   6 # Defines the access control list that is run when an
   7 # SMTP MAIL command is received.
   8 #
   9 .ifndef MAIN_ACL_CHECK_MAIL
  10 MAIN_ACL_CHECK_MAIL = acl_check_mail
  11 .endif
  12 acl_smtp_mail = MAIN_ACL_CHECK_MAIL
  13
  14
  15 # Defines the access control list that is run when an
  16 # SMTP RCPT command is received.
  17 #
  18 .ifndef MAIN_ACL_CHECK_RCPT
  19 MAIN_ACL_CHECK_RCPT = acl_check_rcpt
  20 .endif
  21 acl_smtp_rcpt = MAIN_ACL_CHECK_RCPT
  22
  23
  24 # Defines the access control list that is run when an
  25 # SMTP DATA command is received.
  26 #
  27 .ifndef MAIN_ACL_CHECK_DATA
  28 MAIN_ACL_CHECK_DATA = acl_check_data
  29 .endif
  30 acl_smtp_data = MAIN_ACL_CHECK_DATA
  31
  32
  33 # Message size limit. The default (used when MESSAGE_SIZE_LIMIT
  34 # is unset) is 50 MB
  35 .ifdef MESSAGE_SIZE_LIMIT
  36 message_size_limit = MESSAGE_SIZE_LIMIT
  37 .endif
  38
  39
  40 # If you are running exim4-daemon-heavy or a custom version of Exim that
  41 # was compiled with the content-scanning extension, you can cause incoming
  42 # messages to be automatically scanned for viruses. You have to modify the
  43 # configuration in two places to set this up. The first of them is here,
  44 # where you define the interface to your scanner. This example is typical
  45 # for ClamAV; see the manual for details of what to set for other virus
  46 # scanners. The second modification is in the acl_check_data access
  47 # control list.
  48
  49 # av_scanner = clamd:/var/run/clamav/clamd.ctl
  50
  51
  52 # For spam scanning, there is a similar option that defines the interface to
  53 # SpamAssassin. You do not need to set this if you are using the default, which
  54 # is shown in this commented example. As for virus scanning, you must also
  55 # modify the acl_check_data access control list to enable spam scanning.
  56
  57 # spamd_address = 127.0.0.1 783
  58
  59 # Domain used to qualify unqualified recipient addresses
  60 # If this option is not set, the qualify_domain value is used.
  61 # qualify_recipient = <value of qualify_domain>
  62
  63
  64 # Allow Exim to recognize addresses of the form "user@[10.11.12.13]",
  65 # where the domain part is a "domain literal" (an IP address) instead
  66 # of a named domain. The RFCs require this facility, but it is disabled
  67 # in the default config since it is rarely used and frequently abused.
  68 # Domain literal support also needs a special router, which is automatically
  69 # enabled if you use the enable macro MAIN_ALLOW_DOMAIN_LITERALS.
  70 # Additionally, you might want to make your local IP addresses (or @[])
  71 # local domains.
  72 .ifdef MAIN_ALLOW_DOMAIN_LITERALS
  73 allow_domain_literals
  74 .endif
  75
  76
  77 # Do a reverse DNS lookup on all incoming IP calls, in order to get the
  78 # true host name. If you feel this is too expensive, the networks for
  79 # which a lookup is done can be listed here.
  80 .ifndef DC_minimaldns
  81 .ifndef MAIN_HOST_LOOKUP
  82 MAIN_HOST_LOOKUP = *
  83 .endif
  84 host_lookup = MAIN_HOST_LOOKUP
  85 .endif
  86
  87 # The setting below causes Exim to try to initialize the system resolver
  88 # library with DNSSEC support.  It has no effect if your library lacks
  89 # DNSSEC support.
  90 dns_dnssec_ok = 1
  91
  92 # In a minimaldns setup, update-exim4.conf guesses the hostname and
  93 # dumps it here to avoid DNS lookups being done at Exim run time.
  94 .ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME
  95 primary_hostname = MAIN_HARDCODE_PRIMARY_HOSTNAME
  96 .endif
  97
  98 # The settings below cause Exim to make RFC 1413 (ident) callbacks
  99 # for all incoming SMTP calls. You can limit the hosts to which these
 100 # calls are made, and/or change the timeout that is used. If you set
 101 # the timeout to zero, all RFC 1413 calls are disabled. RFC 1413 calls
 102 # are cheap and can provide useful information for tracing problem
 103 # messages, but some hosts and firewalls have problems with them.
 104 # This can result in a timeout instead of an immediate refused
 105 # connection, leading to delays on starting up SMTP sessions.
 106 # (The default was reduced from 30s to 5s for release 4.61. and to
 107 # disabled for release 4.86)
 108 #
 109 #rfc1413_hosts = *
 110 #rfc1413_query_timeout = 5s
 111
 112
 113 # Enable an efficiency feature.  We advertise the feature; clients
 114 # may request to use it.  For multi-recipient mails we then can
 115 # reject or accept per-user after the message is received.
 116 #
 117 prdr_enable = true
 118
 119 # When using an external relay tester (such as rt.njabl.org and/or the
 120 # currently defunct relay-test.mail-abuse.org, the test may be aborted
 121 # since exim complains about "too many nonmail commands". If you want
 122 # the test to complete, add the host from where "your" relay tester
 123 # connects from to the MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS macro.
 124 # Please note that a non-empty setting may cause extra DNS lookups to
 125 # happen, which is the reason why this option is commented out in the
 126 # default settings.
 127 # MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS = !rt.njabl.org
 128 .ifdef MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS
 129 smtp_accept_max_nonmail_hosts = MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS
 130 .endif
 131
 132 # By default, exim forces a Sender: header containing the local
 133 # account name at the local host name in all locally submitted messages
 134 # that don't have the local account name at the local host name in the
 135 # From: header, deletes any Sender: header present in the submitted
 136 # message and forces the envelope sender of all locally submitted
 137 # messages to the local account name at the local host name.
 138 # The following settings allow local users to specify their own envelope sender
 139 # in a locally submitted message. Sender: headers existing in a locally
 140 # submitted message are not removed, and no automatic Sender: headers
 141 # are added. These settings are fine for most hosts.
 142 # If you run exim on a classical multi-user systems where all users
 143 # have local mailboxes that can be reached via SMTP from the Internet
 144 # with the local FQDN as the domain part of the address, you might want
 145 # to disable the following three lines for traceability reasons.
 146 .ifndef MAIN_FORCE_SENDER
 147 local_from_check = false
 148 local_sender_retain = true
 149 untrusted_set_sender = *
 150 .endif
 151
 152
 153 # By default, Exim expects all envelope addresses to be fully qualified, that
 154 # is, they must contain both a local part and a domain. Configure exim
 155 # to accept unqualified addresses from certain hosts. When this is done,
 156 # unqualified addresses are qualified using the settings of qualify_domain
 157 # and/or qualify_recipient (see above).
 158 # sender_unqualified_hosts = <unset>
 159 # recipient_unqualified_hosts = <unset>
 160
 161
 162 # Configure Exim to support the "percent hack" for certain domains.
 163 # The "percent hack" is the feature by which mail addressed to x%y@z
 164 # (where z is one of the domains listed) is locally rerouted to x@y
 165 # and sent on. If z is not one of the "percent hack" domains, x%y is
 166 # treated as an ordinary local part. The percent hack is rarely needed
 167 # nowadays but frequently abused. You should not enable it unless you
 168 # are sure that you really need it.
 169 # percent_hack_domains = <unset>
 170
 171
 172 # Bounce handling
 173 .ifndef MAIN_IGNORE_BOUNCE_ERRORS_AFTER
 174 MAIN_IGNORE_BOUNCE_ERRORS_AFTER = 2d
 175 .endif
 176 ignore_bounce_errors_after = MAIN_IGNORE_BOUNCE_ERRORS_AFTER
 177
 178 .ifndef MAIN_TIMEOUT_FROZEN_AFTER
 179 MAIN_TIMEOUT_FROZEN_AFTER = 7d
 180 .endif
 181 timeout_frozen_after = MAIN_TIMEOUT_FROZEN_AFTER
 182
 183 .ifndef MAIN_FREEZE_TELL
 184 MAIN_FREEZE_TELL = postmaster
 185 .endif
 186 freeze_tell = MAIN_FREEZE_TELL
 187
 188
 189 # Define spool directory
 190 .ifndef SPOOLDIR
 191 SPOOLDIR = /var/spool/exim4
 192 .endif
 193 spool_directory = SPOOLDIR
 194
 195
 196 # trusted users can set envelope-from to arbitrary values
 197 .ifndef MAIN_TRUSTED_USERS
 198 MAIN_TRUSTED_USERS = uucp
 199 .endif
 200 trusted_users = MAIN_TRUSTED_USERS
 201 .ifdef MAIN_TRUSTED_GROUPS
 202 trusted_groups = MAIN_TRUSTED_GROUPS
 203 .endif
 204
 205
 206 # users in admin group can do many other things
 207 # admin_groups = <unset>
 208
 209
 210 # SMTP Banner. The example includes the Debian version in the SMTP dialog
 211 # MAIN_SMTP_BANNER = "${primary_hostname} ESMTP Exim ${version_number} (Debian package MAIN_PACKAGE_VERSION) ${tod_full}"
 212 # smtp_banner = $smtp_active_hostname ESMTP Exim $version_number $tod_full
 213
 214 .ifdef MAIN_KEEP_ENVIRONMENT
 215 keep_environment = MAIN_KEEP_ENVIRONMENT
 216 .else
 217 # set option to empty value to avoid warning.
 218 keep_environment =
 219 .endif
 220 .ifdef MAIN_ADD_ENVIRONMENT
 221 add_environment = MAIN_ADD_ENVIRONMENT
 222 .endif