######################################################################
# MAIN CONFIGURATION SETTINGS #
######################################################################
+#
# Specify your host's canonical name here. This should normally be the fully
# qualified "official" name of your host. If this option is not set, the
# to any other host on the Internet. Such a setting commonly refers to a
# complete local network as well as the localhost. For example:
#
-# hostlist relay_from_hosts = 127.0.0.1 : 192.168.0.0/16
+# hostlist relay_from_hosts = <; 127.0.0.1 ; ::1 ; 192.168.0.0/16
#
# The "/16" is a bit mask (CIDR notation), not a number of hosts. Note that you
# have to include 127.0.0.1 if you want to allow processes on your host to send
# SMTP mail by using the loopback address. A number of MUAs use this method of
-# sending mail.
+# sending mail. Often, connections are made to "localhost", which might be ::1
+# on IPv6-enabled hosts. Do not forget CIDR for your IPv6 networks.
# All three of these lists may contain many different kinds of item, including
# wildcarded names, regular expressions, and file lookups. See the reference
# manual for details. The lists above are used in the access control lists for
# checking incoming messages. The names of these ACLs are defined here:
+acl_smtp_mail = acl_check_mail
acl_smtp_rcpt = acl_check_rcpt
acl_smtp_data = acl_check_data
# Allow any client to use TLS.
-tls_advertise_hosts = <; !127.0.0.1 ; !::1
+tls_advertise_hosts = *
# Specify the location of the Exim server's TLS certificate and private key.
# The private key must not be encrypted (password protected). You can put
# need the first setting, or in separate files, in which case you need both
# options.
+<% if node[:exim][:certificate_names] -%>
+tls_certificate = /etc/ssl/certs/<%= node[:exim][:certificate_names].first %>.pem
+tls_privatekey = /etc/ssl/private/<%= node[:exim][:certificate_names].first %>.key
+<% else -%>
tls_certificate = /etc/ssl/certs/exim.pem
tls_privatekey = /etc/ssl/private/exim.key
+<% end -%>
+
+# Configure TLS cipher selection.
+
+tls_require_ciphers = <%= node[:ssl][:gnutls_ciphers] %>:%SERVER_PRECEDENCE
# In order to support roaming users who wish to send email from anywhere,
# you may want to make Exim listen on other ports as well as port 25, in
host_lookup = *
-# The settings below, which are actually the same as the defaults in the
-# code, cause Exim to make RFC 1413 (ident) callbacks for all incoming SMTP
-# calls. You can limit the hosts to which these calls are made, and/or change
-# the timeout that is used. If you set the timeout to zero, all RFC 1413 calls
-# are disabled. RFC 1413 calls are cheap and can provide useful information
-# for tracing problem messages, but some hosts and firewalls have problems
-# with them. This can result in a timeout instead of an immediate refused
-# connection, leading to delays on starting up SMTP sessions. (The default was
-# reduced from 30s to 5s for release 4.61.)
+# The settings below cause Exim to make RFC 1413 (ident) callbacks
+# for all incoming SMTP calls. You can limit the hosts to which these
+# calls are made, and/or change the timeout that is used. If you set
+# the timeout to zero, all RFC 1413 calls are disabled. RFC 1413 calls
+# are cheap and can provide useful information for tracing problem
+# messages, but some hosts and firewalls have problems with them.
+# This can result in a timeout instead of an immediate refused
+# connection, leading to delays on starting up SMTP sessions.
+# (The default was reduced from 30s to 5s for release 4.61. and to
+# disabled for release 4.86)
+#
+#rfc1413_hosts = *
+#rfc1413_query_timeout = 5s
-rfc1413_hosts = *
-rfc1413_query_timeout = 5s
+
+# Enable an efficiency feature. We advertise the feature; clients
+# may request to use it. For multi-recipient mails we then can
+# reject or accept per-user after the message is received.
+#
+prdr_enable = true
# By default, Exim expects all envelope addresses to be fully qualified, that
# and/or qualify_recipient (see above).
+# Unless you run a high-volume site you probably want more logging
+# detail than the default. Adjust to suit.
+
+log_selector = +all -skip_delivery
+
+
# If you want Exim to support the "percent hack" for certain domains,
# uncomment the following line and provide a list of domains. The "percent
# hack" is the feature by which mail addressed to x%y@z (where z is one of
# split_spool_directory = true
-# Log just about everything we can log so that we have the best
-# possible chance of knowing what's going on.
+# If you're in a part of the world where ASCII is not sufficient for most
+# text, then you're probably familiar with RFC2047 message header extensions.
+# By default, Exim adheres to the specification, including a limit of 76
+# characters to a line, with encoded words fitting within a line.
+# If you wish to use decoded headers in message filters in such a way
+# that successful decoding of malformed messages matters, you may wish to
+# configure Exim to be more lenient.
+#
+# check_rfc2047_length = false
+#
+# In particular, the Exim maintainers have had multiple reports of problems
+# from Russian administrators of issues until they disable this check,
+# because of some popular, yet buggy, mail composition software.
-log_selector = +all -skip_delivery
+
+# If you wish to be strictly RFC compliant, or if you know you'll be
+# exchanging email with systems that are not 8-bit clean, then you may
+# wish to disable advertising 8BITMIME. Uncomment this option to do so.
+
+# accept_8bitmime = false
+
+
+# Exim does not make use of environment variables itself. However,
+# libraries that Exim uses (e.g. LDAP) depend on specific environment settings.
+# There are two lists: keep_environment for the variables we trust, and
+# add_environment for variables we want to set to a specific value.
+# Note that TZ is handled separately by the timezone runtime option
+# and TIMEZONE_DEFAULT buildtime option.
+
+# keep_environment = ^LDAP
+# add_environment = PATH=/usr/bin::/bin
# Define trusted users.
trusted_users = <%= node[:exim][:trusted_users].join(" : ") %>
-# Don't keep any environment when starting programs - this is the
-# default but setting it stops exim warning
+# Do all deliveries via a limited set of queues.
+
+queue_only = true
+queue_run_max = <%= node[:exim][:queue_run_max] %>
-keep_environment =
+
+# Maximum number of simultaneous SMTP connections
+
+smtp_accept_max = <%= node[:exim][:smtp_accept_max] %>
begin acl
+# This access control list is used for the MAIL command in an incoming
+# SMTP message.
+
+acl_check_mail:
+
+ accept
+
# This access control list is used for every RCPT command in an incoming
# SMTP message. The tests are run in order until the address is either
# accepted or denied.
deny message = Restricted characters in address
domains = !+local_domains
- local_parts = ^[./|] : ^.*[@!] : ^.*/\\.\\./
+ local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
#############################################################################
# Block bounces to selected addresses
message = Rejected because $sender_address is blacklisted\nQueries to postmaster@$qualify_domain
!hosts = +relay_from_hosts
+ deny sender_domains= partial-lsearch;/etc/exim4/blocked-sender-domains
+ message = Rejected because $sender_address is blacklisted\nQueries to postmaster@$qualify_domain
+ !hosts = +relay_from_hosts
+
# Accept mail to postmaster in any local domain, regardless of the source,
# and without verifying the sender.
# relay domains is to use a callout (add /callout), but please read the
# documentation about callouts before doing this.
- require verify = recipient
+ deny domains = +relay_to_domains
+ !verify = recipient/callout=use_sender
+
+ deny domains = !+relay_to_domains
+ !verify = recipient
<% if node[:exim][:dns_blacklists] -%>
# Deny any messages from hosts in certain blacklists.
# 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 demime = *
- malware = *
- message = This message contains a virus ($malware_name).
+ deny malware = *
+ message = This message was detected as possible malware ($malware_name).
<% end -%>
<% if File.exist?("/var/run/spamd.pid") -%>
!hosts = +relay_from_hosts
message = This message failed local spam checks.
- # Accept the message.
+ # Accept messages from relay hosts without modification.
- accept
+ accept hosts = +relay_from_hosts
+
+ # Accept messages from external hosts and add authentication results.
+
+ accept add_header = :at_start:${authresults {$primary_hostname}}
<% else -%>
transport = <%= name %>
<% end -%>
+<% if details[:case_sensitive] -%>
+ caseful_local_part
+<% end -%>
<% end -%>
dnslookup:
driver = dnslookup
domains = ! +local_domains
- transport = remote_smtp
+ transport = signed_smtp
same_domain_copy_routing = yes
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more
remote_smtp:
driver = smtp
+ multi_domain = false
+ tls_require_ciphers = <%= node[:ssl][:gnutls_ciphers] %>:%LATEST_RECORD_VERSION
+
+
+# This transport is used for delivering DKIM signed messages over SMTP connections.
+
+signed_smtp:
+ driver = smtp
+ connect_timeout = 1m
+ dkim_domain = ${lookup{${domain:$h_from:}}partial-lsearch{/etc/exim4/dkim-domains}{$value}}
+ dkim_selector = ${lookup{$dkim_domain}lsearch{/etc/exim4/dkim-selectors}{$value}}
+ dkim_private_key = /etc/exim4/dkim-keys/${dkim_domain}
+ dkim_identity = ${lc:${address:$h_from:}}
+ dkim_timestamps = 1209600
+ multi_domain = false
+ hosts_try_dane =
+ tls_require_ciphers = <%= node[:ssl][:gnutls_ciphers] %>:%LATEST_RECORD_VERSION
# This transport is used for handling pipe deliveries generated by alias or
to = $sender_address
subject = Re: $header_subject:
headers = MIME-Version: 1.0\nContent-Type: text/plain; charset=utf-8
- file = /etc/exim4/noreply/$local_part
+ file = ${lookup{$local_part}dsearch,filter=file,ret=full{/etc/exim4/noreply}}
user = Debian-exim
group = Debian-exim
command = <%= details[:command] %>
home_directory = <%= details[:home_directory] %>
path = <%= details[:path] || "/bin:/usr/bin" %>
+<% if details[:environment] -%>
+ environment = <%= details[:environment].map { |k,v| "#{k}=#{v}" }.join(":") %>
+<% end -%>
return_fail_output
<% else -%>
driver = appendfile
projects / chef.git / blobdiff