-# $Cambridge: exim/src/src/configure.default,v 1.8 2006/06/07 17:42:27 fanf2 Exp $
+# $Cambridge: exim/src/src/configure.default,v 1.12 2006/10/25 08:42:57 ph10 Exp $
######################################################################
# Runtime configuration file for Exim #
# Most straightforward access control requirements can be obtained by
# appropriate settings of the above options. In more complicated situations,
-# you may need to modify the Access Control List (ACL) which appears later in
+# you may need to modify the Access Control Lists (ACLs) which appear later in
# this file.
# The first setting specifies your local domains, for example:
# allow_domain_literals
-# No deliveries will ever be run under the uids of these users (a colon-
-# separated list). An attempt to do so causes a panic error to be logged, and
-# the delivery to be deferred. This is a paranoic safety catch. There is an
-# even stronger safety catch in the form of the FIXED_NEVER_USERS setting
-# in the configuration for building Exim. The list of users that it specifies
-# is built into the binary, and cannot be changed. The option below just adds
-# additional users to the list. The default for FIXED_NEVER_USERS is "root",
-# but just to be absolutely sure, the default here is also "root".
+# No deliveries will ever be run under the uids of users specified by
+# never_users (a colon-separated list). An attempt to do so causes a panic
+# error to be logged, and the delivery to be deferred. This is a paranoic
+# safety catch. There is an even stronger safety catch in the form of the
+# FIXED_NEVER_USERS setting in the configuration for building Exim. The list of
+# users that it specifies is built into the binary, and cannot be changed. The
+# option below just adds additional users to the list. The default for
+# FIXED_NEVER_USERS is "root", but just to be absolutely sure, the default here
+# is also "root".
# Note that the default setting means you cannot deliver mail addressed to root
# as if it were a normal user. This isn't usually a problem, as most sites have
timeout_frozen_after = 7d
+# By default, messages that are waiting on Exim's queue are all held in a
+# single directory called "input" which it itself within Exim's spool
+# directory. (The default spool directory is specified when Exim is built, and
+# is often /var/spool/exim/.) Exim works best when its queue is kept short, but
+# there are circumstances where this is not always possible. If you uncomment
+# the setting below, messages on the queue are held in 62 subdirectories of
+# "input" instead of all in the same directory. The subdirectories are called
+# 0, 1, ... A, B, ... a, b, ... z. This has two benefits: (1) If your file
+# system degrades with many files in one directory, this is less likely to
+# happen; (2) Exim can process the queue one subdirectory at a time instead of
+# all at once, which can give better performance with large queues.
+
+# split_spool_directory = true
+
+
######################################################################
# ACL CONFIGURATION #
accept authenticated = *
control = submission
+ # Insist that any other recipient address that we accept is either in one of
+ # our local domains, or is in a domain for which we explicitly allow
+ # relaying. Any other domain is rejected as being unacceptable for relaying.
+
+ require message = relay not permitted
+ domains = +local_domains : +relay_to_domains
+
+ # We also require all accepted addresses to be verifiable. This check will
+ # do local part verification for local domains, but only check the domain
+ # for remote domains. The only way to check local parts for the remote
+ # relay domains is to use a callout (add /callout), but please read the
+ # documentation about callouts before doing this.
+
+ require verify = recipient
+
#############################################################################
# There are no default checks on DNS black lists because the domains that
# contain these lists are changing all the time. However, here are two
# deny message = rejected because $sender_host_address is in a black list at $dnslist_domain\n$dnslist_text
# dnslists = black.list.example
#
- # warn message = X-Warning: $sender_host_address is in a black list at $dnslist_domain
+ # warn dnslists = black.list.example
+ # add_header = X-Warning: $sender_host_address is in a black list at $dnslist_domain
# log_message = found in $dnslist_domain
- # dnslists = black.list.example
#############################################################################
#############################################################################
# require verify = csa
#############################################################################
- # Accept if the address is in a local domain, but only if the recipient can
- # be verified. Otherwise deny. The "endpass" line is the border between
- # passing on to the next ACL statement (if tests above it fail) or denying
- # access (if tests below it fail).
-
- accept domains = +local_domains
- endpass
- verify = recipient
-
- # Accept if the address is in a domain for which we are an incoming relay,
- # but again, only if the recipient can be verified.
+ # At this point, the address has passed all the checks that have been
+ # configured, so we accept it unconditionally.
- accept domains = +relay_to_domains
- endpass
- verify = recipient
-
- # Reaching the end of the ACL causes a "deny", but we might as well give
- # an explicit message.
-
- deny message = relay not permitted
+ accept
# This ACL is used after the contents of a message have been received. This
# Deny if the message contains a virus. Before enabling this check, you
# must install a virus scanner and set the av_scanner option above.
#
- # deny malware = *
- # message = This message contains a virus ($malware_name).
+ # deny malware = *
+ # message = This message contains a virus ($malware_name).
# Add headers to a message if it is judged to be spam. Before enabling this,
# you must install SpamAssassin. You may also need to set the spamd_address
# option above.
#
- # warn spam = nobody
- # message = X-Spam_score: $spam_score\n\
- # X-Spam_score_int: $spam_score_int\n\
- # X-Spam_bar: $spam_bar\n\
- # X-Spam_report: $spam_report
+ # warn spam = nobody
+ # add_header = X-Spam_score: $spam_score\n\
+ # X-Spam_score_int: $spam_score_int\n\
+ # X-Spam_bar: $spam_bar\n\
+ # X-Spam_report: $spam_report
# Accept the message.