###################################################################### # 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. # 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 # ###################################################################### # Specify your host's canonical name here. If this option is not set, the # uname() function is called to obtain the name. # primary_hostname = # Specify the domain you want to be added to all unqualified addresses # here. 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. # local_domains = # 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. exim_user = bin exim_group = mail never_users = root # 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_nets = 0.0.0.0/0 # 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 following line will make Exim reject mail from any # host whose IP address is blacklisted in the RBL at maps.vix.com. # rbl_domains = rbl.maps.vix.com # The setting below locks out the use of your host as a mail relay by any # other host. If you want to permit relaying through your host from certain # hosts or IP networks, you need to vary this option and/or make use of the # other three options in the set sender_{host,net}_{accept,reject}_relay. # See the section of the manual entitled "Control of relaying" for more info. # Removing this setting altogether is not recommended, because there are many # unscrupulous people out there who will make use of open relays to try to # disguise the source of unsolicited bulk mail. sender_host_accept_relay = localhost # 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=* pid_file_path = /var/run/exim%s.pid end ###################################################################### # 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. 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 file = /var/mail/${local_part} delivery_date_add envelope_to_add return_path_add group = mail mode = 0660 # This transport is used for handling pipe addresses generated by alias # or .forward files. It has a conventional name, since it is not actually # mentioned elsewhere in this configuration file. (A different name *can* # be specified via the "address_pipe_transport" option if you really want # to.) 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 if you # want this to happen only when the pipe fails to complete normally. address_pipe: driver = pipe return_output # This transport is used for handling file addresses generated by alias # or .forward files. It has a conventional name, since it is not actually # mentioned elsewhere in this configuration file. address_file: driver = appendfile delivery_date_add envelope_to_add return_path_add # This transport is used for handling file addresses generated by alias # or .forward files if the path ends in "/", which causes it to be treated # as a directory name rather than a file name. Each message is then delivered # to a unique file in the directory. If instead you want all such deliveries to # be in the "maildir" format that is used by some other mail software, # uncomment the final option below. If this is done, the directory specified # in the .forward or alias file is the base maildir directory. # # Should you want to be able to specify either maildir or non-maildir # directory-style deliveries, then you must set up yet another transport, # called address_directory2. This is used if the path ends in "//" so should # be the one used for maildir, as the double slash suggests another level # of directory. In the absence of address_directory2, paths ending in // # are passed to address_directory. address_directory: driver = appendfile delivery_date_add envelope_to_add return_path_add no_from_hack prefix = "" suffix = "" # maildir_format # This transport is used for handling autoreplies generated by the filtering # option of the forwardfile director. It has a conventional name, since it # is not actually mentioned elsewhere in this configuration file. address_reply: driver = autoreply end ###################################################################### # 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. system_aliases: driver = aliasfile file = /etc/aliases search_type = lsearch # user = bin # 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. userforward: driver = forwardfile file = .forward no_verify check_ancestor # filter # This director matches local user mailboxes. localuser: driver = localuser transport = local_delivery end ###################################################################### # 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. # This router routes to remote hosts over SMTP using a DNS lookup with # default options. lookuphost: driver = lookuphost 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 transport = remote_smtp end ###################################################################### # 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 2 hours 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 # ------ ----- ------- * * F,2h,15m; G,16h,2h,1.5; F,4d,8h end ###################################################################### # REWRITE CONFIGURATION # ###################################################################### # There are no rewriting specifications in this default configuration file. # End of Exim configuration file