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[ edit: exim.conf.dist ]
#!!# cPanel Exim 4 Config @CONFIG@ #!!# These options specify the Access Control Lists (ACLs) that #!!# are used for incoming SMTP messages - after the RCPT and DATA #!!# commands, respectively. acl_smtp_rcpt = check_recipient acl_smtp_data = check_message #!!# This setting defines a named domain list called #!!# local_domains, created from the old options that #!!# referred to local domains. It will be referenced #!!# later on by the syntax "+local_domains". #!!# Other domain and host lists may follow. domainlist local_domains = lsearch;/etc/localdomains domainlist relay_domains = lsearch;/etc/localdomains : \ lsearch;/etc/secondarymx hostlist relay_hosts = lsearch;/etc/relayhosts : \ localhost hostlist auth_relay_hosts = * ###################################################################### # Runtime configuration file for Exim # ###################################################################### # This is a default configuration file which will operate correctly in # uncomplicated installations. Please see the manual for a complete list # of all the runtime configuration options that can be included in a # configuration file. There are many more than are mentioned here. The # manual is in the file doc/spec.txt in the Exim distribution as a plain # ASCII file. Other formats (PostScript, Texinfo, HTML) are available from # the Exim ftp sites. The manual is also online via the Exim web sites. # This file is divided into several parts, all but the last of which are # terminated by a line containing the word "end". The parts must appear # in the correct order, and all must be present (even if some of them are # in fact empty). Blank lines, and lines starting with # are ignored. ###################################################################### # MAIN CONFIGURATION SETTINGS # ###################################################################### perl_startup = do '/etc/exim.pl' #dns_retry = 1 #dns_retrans = 1s # 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 # uname() function is called to obtain the name. smtp_banner = "${primary_hostname} ESMTP Exim ${version_number} \ \#${compile_number} ${tod_full} \n\ We do not authorize the use of this system to transport unsolicited, \n\ and/or bulk e-mail." #nobody as the sender seems to annoy people untrusted_set_sender = * local_from_check = false rfc1413_query_timeout = 2s split_spool_directory = yes smtp_connect_backlog = 50 smtp_accept_max = 100 # primary_hostname = deliver_queue_load_max = 3 auto_thaw = 6d ignore_bounce_errors_after = 7d timeout_frozen_after = 8d # Specify the domain you want to be added to all unqualified addresses # here. An unqualified address is one that does not contain an "@" character # followed by a domain. For example, "caesar@rome.ex" is a fully qualified # address, but the string "caesar" (i.e. just a login name) is an unqualified # email address. Unqualified addresses are accepted only from local callers by # default. See the receiver_unqualified_{hosts,nets} options if you want # to permit unqualified addresses from remote sources. If this option is # not set, the primary_hostname value is used for qualification. # qualify_domain = # If you want unqualified recipient addresses to be qualified with a different # domain to unqualified sender addresses, specify the recipient domain here. # If this option is not set, the qualify_domain value is used. # qualify_recipient = # Specify your local domains as a colon-separated list here. If this option # is not set (i.e. not mentioned in the configuration file), the # qualify_recipient value is used as the only local domain. If you do not want # to do any local deliveries, uncomment the following line, but do not supply # any data for it. This sets local_domains to an empty string, which is not # the same as not mentioning it at all. An empty string specifies that there # are no local domains; not setting it at all causes the default value (the # setting of qualify_recipient) to be used. #!!# message_filter renamed system_filter system_filter = /etc/antivirus.exim message_body_visible = 5000 # If you want to accept mail addressed to your host's literal IP address, for # example, mail addressed to "user@[111.111.111.111]", then uncomment the # following line, or supply the literal domain(s) as part of "local_domains" # above. # local_domains_include_host_literals # No local deliveries will ever be run under the uids of these users (a colon- # separated list). An attempt to do so gets changed so that it runs under the # uid of "nobody" instead. This is a paranoic safety catch. Note 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 an alias for # root that redirects such mail to a human administrator. never_users = root # The use of your host as a mail relay by any host, including the local host # calling its own SMTP port, is locked out by default. If you want to permit # relaying from the local host, you should set # # host_accept_relay = localhost # # If you want to permit relaying through your host from certain hosts or IP # networks, you need to set the option appropriately, for example # # # # If you are an MX backup or gateway of some kind for some domains, you must # set relay_domains to match those domains. This will allow any host to # relay through your host to those domains. # # See the section of the manual entitled "Control of relaying" for more # information. # The setting below causes Exim to do a reverse DNS lookup on all incoming # IP calls, in order to get the true host name. If you feel this is too # expensive, you can specify the networks for which a lookup is done, or # remove the setting entirely. #host_lookup = 0.0.0.0/0 # By default, Exim expects all envelope addresses to be fully qualified, that # is, they must contain both a local part and a domain. If you want to accept # unqualified addresses (just a local part) from certain hosts, you can specify # these hosts by setting one or both of # # receiver_unqualified_hosts = # sender_unqualified_hosts = # # to control sender and receiver addresses, respectively. When this is done, # unqualified addresses are qualified using the settings of qualify_domain # and/or qualify_recipient (see above). # Exim contains support for the Realtime Blocking List (RBL) that is being # maintained as part of the DNS. See http://maps.vix.com/rbl/ for background. # Uncommenting the first line below will make Exim reject mail from any # host whose IP address is blacklisted in the RBL at maps.vix.com. Some # others have followed the RBL lead and have produced other lists: DUL is # a list of dial-up addresses, and ORBS is a list of open relay systems. The # second line below checks all three lists. # rbl_domains = rbl.maps.vix.com # rbl_domains = rbl.maps.vix.com # If you want Exim to support the "percent hack" for all your local domains, # uncomment the following line. This is the feature by which mail addressed # to x%y@z (where z is one of your local domains) is locally rerouted to # x@y and sent on. Otherwise x%y is treated as an ordinary local part. # percent_hack_domains = * #sender_host_accept = +include_unknown:* #sender_host_reject = +include_unknown:lsearch*;/etc/spammers tls_certificate = /etc/exim.crt tls_privatekey = /etc/exim.key tls_advertise_hosts = * helo_accept_junk_hosts = * smtp_enforce_sync = false #!!#######################################################!!# #!!# This new section of the configuration contains ACLs #!!# #!!# (Access Control Lists) derived from the Exim 3 #!!# #!!# policy control options. #!!# #!!#######################################################!!# #!!# These ACLs are crudely constructed from Exim 3 options. #!!# They are almost certainly not optimal. You should study #!!# them and rewrite as necessary. begin acl @BEGINACL@ %BEGINACLBLOCK% #!!# ACL that is used after the RCPT command check_recipient: # Exim 3 had no checking on -bs messages, so for compatibility # we accept if the source is local SMTP (i.e. not over TCP/IP). # We do this by testing for an empty sending host field. accept hosts = : #if it gets here it isn't mailman #sender verifications are required for all messages that are not sent to lists require verify = sender/callout accept domains = +local_domains endpass #recipient verifications are required for all messages that are not sent to the local machine #this was done at multiple users requests message = "The recipient cannot be verified. Please check all recipients of this message to verify they are valid." verify = recipient accept domains = +relay_domains warn message = ${perl{popbeforesmtpwarn}{$sender_host_name}} hosts = +relay_hosts accept hosts = +relay_hosts warn message = ${perl{popbeforesmtpwarn}{$sender_host_address}} condition = ${perl{checkrelayhost}{$sender_host_address}} accept condition = ${perl{checkrelayhost}{$sender_host_address}} accept hosts = +auth_relay_hosts endpass message = $sender_fullhost is currently not permitted to \ relay through this server. Perhaps you \ have not logged into the pop/imap server in the \ last 30 minutes or do not have SMTP Authentication turned on in your email client. authenticated = * deny message = $sender_fullhost is currently not permitted to \ relay through this server. Perhaps you \ have not logged into the pop/imap server in the \ last 30 minutes or do not have SMTP Authentication turned on in your email client. #!!# ACL that is used after the DATA command check_message: # Enabling this will make the server non-rfc compliant # require verify = header_sender accept %ENDACLBLOCK% @ENDACL@ begin authenticators fixed_plain: driver = plaintext public_name = PLAIN server_prompts = : server_condition = "${perl{checkuserpass}{$1}{$2}{$3}}" server_set_id = $2 fixed_login: driver = plaintext public_name = LOGIN server_prompts = "Username:: : Password::" server_condition = "${perl{checkuserpass}{$1}{$2}}" server_set_id = $1 @AUTH@ ###################################################################### # REWRITE CONFIGURATION # ###################################################################### # There are no rewriting specifications in this default configuration file. begin rewrite @REWRITE@ #!!#######################################################!!# #!!# Here follow routers created from the old routers, #!!# #!!# for handling non-local domains. #!!# #!!#######################################################!!# begin routers ###################################################################### # ROUTERS CONFIGURATION # # Specifies how remote addresses are handled # ###################################################################### # ORDER DOES MATTER # # A remote address is passed to each in turn until it is accepted. # ###################################################################### # Remote addresses are those with a domain that does not match any item # in the "local_domains" setting above. democheck: driver = redirect condition = "${perl{democheck}}" data = :fail: demo accounts are not permitted to relay email @ROUTERSTART@ # This router routes to remote hosts over SMTP using a DNS lookup with # default options. lookuphost: driver = dnslookup condition = "${perl{checkspam}}" domains = ! +local_domains #ignore verisign to prevent waste of bandwidth ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 64.94.110.0/24 headers_add = "${perl{mailtrapheaders}}" transport = remote_smtp # This router routes to remote hosts over SMTP by explicit IP address, # given as a "domain literal" in the form [nnn.nnn.nnn.nnn]. The RFCs # require this facility, which is why it is enabled by default in Exim. # If you want to lock it out, set forbid_domain_literals in the main # configuration section above. literal: driver = ipliteral condition = "${perl{checkspam}}" domains = ! +local_domains headers_add = "${perl{mailtrapheaders}}" transport = remote_smtp #!!# This new router is put here to fail all domains that #!!# were not in local_domains in the Exim 3 configuration. fail_remote_domains: driver = redirect domains = ! +local_domains allow_fail data = :fail: unrouteable mail domain "$domain" @ROUTEREND@ #!!#######################################################!!# #!!# Here follow routers created from the old directors, #!!# #!!# for handling local domains. #!!# #!!#######################################################!!# ###################################################################### # DIRECTORS CONFIGURATION # # Specifies how local addresses are handled # ###################################################################### # ORDER DOES MATTER # # A local address is passed to each in turn until it is accepted. # ###################################################################### # Local addresses are those with a domain that matches some item in the # "local_domains" setting above, or those which are passed back from the # routers because of a "self=local" setting (not used in this configuration). # This director handles aliasing using a traditional /etc/aliases file. # If any of your aliases expand to pipes or files, you will need to set # up a user and a group for these deliveries to run under. You can do # this by uncommenting the "user" option below (changing the user name # as appropriate) and adding a "group" option if necessary. Alternatively, you # can specify "user" on the transports that are used. Note that those # listed below are the same as are used for .forward files; you might want # to set up different ones for pipe and file deliveries from aliases. #spam_filter: # driver = forwardfile # file = /etc/spam.filter # no_check_local_user # no_verify # filter # allow_system_actions @DIRECTORSTART@ virtual_sa_user: driver = accept headers_add="${perl{gensaheader_virtual}{$domain}}" condition = "${perl{checksa_deliver}{$domain}{$local_part}{$received_protocol}}" domains = lsearch;/etc/userdomains retry_use_local_part transport = virtual_sa_userdelivery sa_localuser: driver = accept check_local_user headers_add="${perl{gensaheader}{$local_part}}" condition = "${perl{checkusersa}{$local_part}{$received_protocol}}" domains = ! lsearch;/etc/userdomains transport = local_sa_delivery central_filter: #!!# filter renamed allow_filter driver = redirect allow_filter no_check_local_user file = /etc/vfilters/${domain} file_transport = address_file pipe_transport = virtual_address_pipe reply_transport = address_reply retry_use_local_part user = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" no_verify central_user_filter: driver = redirect allow_filter check_local_user domains = ! lsearch;/etc/userdomains condition = "${perl{hasfilterfile}{$local_part}}" file = "${perl{getfilterfile}{$local_part}}" file_transport = address_file pipe_transport = virtual_address_pipe reply_transport = address_reply retry_use_local_part no_verify virtual_aliases_nostar: driver = redirect allow_defer allow_fail data = ${if exists{/etc/valiases/$domain}{${lookup{$local_part@$domain}lsearch{/etc/valiases/$domain}}}} file_transport = address_file group = mail pipe_transport = virtual_address_pipe retry_use_local_part domains = lsearch;/etc/localdomains unseen virtual_user_spam: driver = accept condition = "${perl{check_deliver_spam}{$domain}{$local_part}}" headers_remove="x-spam-exim" domains = lsearch;/etc/userdomains retry_use_local_part transport = virtual_userdelivery_spam virtual_user: driver = accept condition = "${perl{check_deliver}{$domain}{$local_part}}" headers_remove="x-spam-exim" domains = lsearch;/etc/userdomains retry_use_local_part transport = virtual_userdelivery has_alias_but_no_mailbox_discarded_to_prevent_loop: driver = redirect condition = "${perl{checkvalias}{$domain}{$local_part}}" domains = lsearch;/etc/localdomains data="#Exim Filter\nseen finish" group = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" user = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" allow_filter disable_logging = true virtual_aliases: driver = redirect allow_defer allow_fail data = ${if exists{/etc/valiases/$domain}{${lookup{*}lsearch{/etc/valiases/$domain}}}} file_transport = address_file group = mail pipe_transport = virtual_address_pipe domains = lsearch;/etc/localdomains retry_use_local_part @DIRECTORMIDDLE@ # This director handles forwarding using traditional .forward files. # If you want it also to allow mail filtering when a forward file # starts with the string "# Exim filter", uncomment the "filter" option. # The check_ancestor option means that if the forward file generates an # address that is an ancestor of the current one, the current one gets # passed on instead. This covers the case where A is aliased to B and B # has a .forward file pointing to A. The three transports specified at the # end are those that are used when forwarding generates a direct delivery # to a file, or to a pipe, or sets up an auto-reply, respectively. system_aliases: driver = redirect allow_defer allow_fail data = ${lookup{$local_part}lsearch{/etc/aliases}} file_transport = address_file pipe_transport = address_pipe retry_use_local_part # user = exim local_aliases: driver = redirect allow_defer allow_fail data = ${lookup{$local_part}lsearch{/etc/localaliases}} file_transport = address_file pipe_transport = address_pipe check_local_user userforward: #!!# filter renamed allow_filter driver = redirect allow_filter check_ancestor check_local_user domains = ! lsearch;/etc/userdomains no_expn file = $home/.forward file_transport = address_file pipe_transport = address_pipe reply_transport = address_reply no_verify localuser_spam: driver = accept headers_remove="x-spam-exim" condition = "${perl{checkuserspambox}{$local_part}}" check_local_user domains = ! lsearch;/etc/userdomains transport = local_delivery_spam localuser: driver = accept headers_remove="x-spam-exim" check_local_user domains = ! lsearch;/etc/userdomains transport = local_delivery # This director matches local user mailboxes. @DIRECTOREND@ ###################################################################### # TRANSPORTS CONFIGURATION # ###################################################################### # ORDER DOES NOT MATTER # # Only one appropriate transport is called for each delivery. # ###################################################################### # A transport is used only when referenced from a director or a router that # successfully handles an address. # This transport is used for delivering messages over SMTP connections. begin transports @TRANSPORTSTART@ remote_smtp: driver = smtp # This transport is used for local delivery to user mailboxes. By default # it will be run under the uid and gid of the local user, and requires # the sticky bit to be set on the /var/mail directory. Some systems use # the alternative approach of running mail deliveries under a particular # group instead of using the sticky bit. The commented options below show # how this can be done. local_delivery: driver = appendfile delivery_date_add envelope_to_add directory = "${extract{5}{:}{${lookup passwd{$local_part}{$value}}}}/mail" maildir_format group = mail mode = 0660 return_path_add user = $local_part local_delivery_spam: driver = appendfile delivery_date_add envelope_to_add directory = "${extract{5}{:}{${lookup passwd{$local_part}{$value}}}}/mail/.spam" maildir_format group = mail mode = 0660 return_path_add user = $local_part local_sa_delivery: driver = pipe command = /usr/sbin/sendmail -bS use_bsmtp = true transport_filter = "/usr/bin/spamc" user = $local_part group = mail log_output = true current_directory = "/tmp" home_directory = "/tmp" return_fail_output = true return_path_add = false message_prefix = message_suffix = timeout_defer = true transport_filter_timeout = 5m temp_errors = 2 @TRANSPORTMIDDLE@ # This transport is used for handling pipe deliveries generated by alias # or .forward files. If the pipe generates any standard output, it is returned # to the sender of the message as a delivery error. Set return_fail_output # instead of return_output if you want this to happen only when the pipe fails # to complete normally. You can set different transports for aliases and # forwards if you want to - see the references to address_pipe below. address_pipe: driver = pipe return_output virtual_address_pipe: driver = pipe group = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" return_output user = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" # This transport is used for handling deliveries directly to files that are # generated by aliassing or forwarding. address_file: driver = appendfile delivery_date_add envelope_to_add return_path_add # This transport is used for handling autoreplies generated by the filtering # option of the forwardfile director. virtual_sa_userdelivery: driver = pipe command = /usr/sbin/sendmail -bS use_bsmtp = true transport_filter = "/usr/bin/spamc" user = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" group = mail log_output = true current_directory = "/tmp" home_directory = "/tmp" return_fail_output = true return_path_add = false message_prefix = message_suffix = timeout_defer = true transport_filter_timeout = 5m temp_errors = 2 virtual_userdelivery_spam: driver = appendfile delivery_date_add envelope_to_add directory = "${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/mail/${domain}/${local_part}/.spam" maildir_format group = mail mode = 0660 quota = "${if exists{${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/etc/${domain}/quota} {${lookup{$local_part}lsearch*{${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/etc/${domain}/quota}{$value}}} {}}" quota_directory = "${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/mail/${domain}/${local_part}" return_path_add user = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" virtual_userdelivery: driver = appendfile delivery_date_add envelope_to_add directory = "${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/mail/${domain}/${local_part}" maildir_format group = mail mode = 0660 quota = "${if exists{${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/etc/${domain}/quota} {${lookup{$local_part}lsearch*{${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/etc/${domain}/quota}{$value}}} {}}" quota_directory = "${extract{5}{:}{${lookup passwd{${lookup{$domain}lsearch*{/etc/userdomains}{$value}}}{$value}}}}/mail/${domain}/${local_part}" return_path_add user = "${lookup{$domain}lsearch* {/etc/userdomains}{$value}}" address_reply: driver = autoreply @TRANSPORTEND@ ###################################################################### # RETRY CONFIGURATION # ###################################################################### # This single retry rule applies to all domains and all errors. It specifies # retries every 15 minutes for 2 hours, then increasing retry intervals, # starting at 1 hour and increasing each time by a factor of 1.5, up to 16 # hours, then retries every 8 hours until 4 days have passed since the first # failed delivery. # Domain Error Retries # ------ ----- ------- begin retry @RETRYSTART@ * * F,2h,15m; G,16h,1h,1.5; F,4d,8h @RETRYEND@ # End of Exim 4 configuration
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