X-Git-Url: https://git.openstreetmap.org/chef.git/blobdiff_plain/aa1d729df909b6579ed63e7ce4162ec5ed12aa17..3b34c7718e74b79167c426a52b52f78bcc5ef600:/cookbooks/exim/templates/default/exim4.conf.erb diff --git a/cookbooks/exim/templates/default/exim4.conf.erb b/cookbooks/exim/templates/default/exim4.conf.erb index 5766cd2f1..df725a8ae 100644 --- a/cookbooks/exim/templates/default/exim4.conf.erb +++ b/cookbooks/exim/templates/default/exim4.conf.erb @@ -42,6 +42,7 @@ ###################################################################### # 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 @@ -93,12 +94,13 @@ hostlist relay_from_hosts = <; <%= @relay_from_hosts.join(" ; ") %> # 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 @@ -144,7 +146,7 @@ spamd_address = 127.0.0.1 783 # 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 @@ -152,8 +154,17 @@ tls_advertise_hosts = <; !127.0.0.1 ; !::1 # 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 @@ -224,18 +235,26 @@ never_users = root 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 @@ -251,6 +270,12 @@ rfc1413_query_timeout = 5s # 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 @@ -295,21 +320,42 @@ timeout_frozen_after = 7d # 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. -# Define trusted users. +# accept_8bitmime = false -trusted_users = <%= node[:exim][:trusted_users].join(" : ") %> +# 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 -# Don't keep any environment when starting programs - this is the -# default but setting it stops exim warning -keep_environment = +# Define trusted users. + +trusted_users = <%= node[:exim][:trusted_users].join(" : ") %> @@ -330,9 +376,7 @@ acl_check_rcpt: # testing for an empty sending host field. accept hosts = : -<% if node[:lsb][:release].to_i >= 10.04 -%> control = dkim_disable_verify -<% end -%> ############################################################################# # The following section of the ACL is concerned with local parts that contain @@ -377,7 +421,7 @@ acl_check_rcpt: deny message = Restricted characters in address domains = !+local_domains - local_parts = ^[./|] : ^.*[@!] : ^.*/\\.\\./ + local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./ ############################################################################# # Block bounces to selected addresses @@ -385,9 +429,10 @@ acl_check_rcpt: deny local_parts = root:postmaster:webmaster:abuse:support senders = : - # Block sender of spam backscatter + # Block blacklisted senders - deny senders = www-data@www.easyticket.de:*@email.realestate.co.nz:sipdentistry@mail.mediaworksonline.com:www-data@*.consoglobe.com:lina-noreply@jobstreet.com:apache@704210-web2.tristatecamera.com:webmaster@openstreetmap.org + deny senders = lsearch*@;/etc/exim4/blocked-senders + 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, @@ -422,9 +467,7 @@ acl_check_rcpt: accept hosts = +relay_from_hosts control = submission -<% if node[:lsb][:release].to_i >= 10.04 -%> control = dkim_disable_verify -<% end -%> # Accept if the message arrived over an authenticated connection, from # any host. Again, these messages are usually from MUAs, so recipient @@ -433,9 +476,7 @@ acl_check_rcpt: accept authenticated = * control = submission -<% if node[:lsb][:release].to_i >= 10.04 -%> control = dkim_disable_verify -<% end -%> # 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 @@ -490,9 +531,8 @@ acl_check_data: # 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") -%> @@ -503,6 +543,13 @@ acl_check_data: message = This message scored $spam_score SpamAssassin points. <% end -%> + # Deny spammy messages with headers of the form: + # X-PHP-Originating-Script: :.php + # X-PHP-Originating-Script: :.class.php + deny condition = ${if match {$h_X-PHP-Originating-Script:}{^[0-9]+:[A-Za-z]+(\\.class)?\\.php\$}} + !hosts = +relay_from_hosts + message = This message failed local spam checks. + # Accept the message. accept @@ -655,6 +702,8 @@ begin transports remote_smtp: driver = smtp + multi_domain = false + tls_require_ciphers = <%= node[:ssl][:gnutls_ciphers] %>:%LATEST_RECORD_VERSION # This transport is used for handling pipe deliveries generated by alias or @@ -720,7 +769,10 @@ noreply: command = <%= details[:command] %> home_directory = <%= details[:home_directory] %> path = <%= details[:path] || "/bin:/usr/bin" %> - return_output +<% if details[:environment] -%> + environment = <%= details[:environment].map { |k,v| "#{k}=#{v}" }.join(":") %> +<% end -%> + return_fail_output <% else -%> driver = appendfile <% if details[:file] -%> @@ -773,6 +825,7 @@ begin retry # There are no rewriting specifications in this default configuration file. begin rewrite +*@<%= node[:fqdn] %> "${if !match {${lookup{$1}lsearch{/etc/aliases}{$value}}}{@} {$1@openstreetmap.org}fail}" Eh <% node[:exim][:rewrites].each do |rewrite| -%> <%= rewrite[:pattern] %> <%= rewrite[:replacement] %> <%= rewrite[:flags] %> <% end -%>