# Global Postfix configuration file. This file lists only a subset# of all 300+ parameters. See the postconf(5) manual page for a# complete list.## The general format of each line is: parameter = value. Lines# that begin with whitespace continue the previous line. A value can# contain references to other $names or ${name}s.## NOTE - CHANGE NO MORE THAN 2-3 PARAMETERS AT A TIME, AND TEST IF# POSTFIX STILL WORKS AFTER EVERY CHANGE.# SOFT BOUNCE## The soft_bounce parameter provides a limited safety net for# testing. When soft_bounce is enabled, mail will remain queued that# would otherwise bounce. This parameter disables locally-generated# bounces, and prevents the SMTP server from rejecting mail permanently# (by changing 5xx replies into 4xx replies). However, soft_bounce# is no cure for address rewriting mistakes or mail routing mistakes.##soft_bounce = no# LOCAL PATHNAME INFORMATION## The queue_directory specifies the location of the Postfix queue.# This is also the root directory of Postfix daemons that run chrooted.# See the files in examples/chroot-setup for setting up Postfix chroot# environments on different UNIX systems.#queue_directory = /var/spool/postfix# The command_directory parameter specifies the location of all# postXXX commands.#command_directory = /usr/sbin# The daemon_directory parameter specifies the location of all Postfix# daemon programs (i.e. programs listed in the master.cf file). This# directory must be owned by root.#daemon_directory = /usr/libexec/postfix# QUEUE AND PROCESS OWNERSHIP## The mail_owner parameter specifies the owner of the Postfix queue# and of most Postfix daemon processes. Specify the name of a user# account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS# AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM. In# particular, don‘t specify nobody or daemon. PLEASE USE A DEDICATED# USER.#mail_owner = postfix# The default_privs parameter specifies the default rights used by# the local delivery agent for delivery to external file or command.# These rights are used in the absence of a recipient user context.# DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.##default_privs = nobody# INTERNET HOST AND DOMAIN NAMES# # The myhostname parameter specifies the internet hostname of this# mail system. The default is to use the fully-qualified domain name# from gethostname(). $myhostname is used as a default value for many# other configuration parameters.#myhostname = fedor# The mydomain parameter specifies the local internet domain name.# The default is to use $myhostname minus the first component.# $mydomain is used as a default value for many other configuration# parameters.#mydomain = omsk-osma.ru# SENDING MAIL# # The myorigin parameter specifies the domain that locally-posted# mail appears to come from. The default is to append $myhostname,# which is fine for small sites. If you run a domain with multiple# machines, you should (1) change this to $mydomain and (2) set up# a domain-wide alias database that aliases each user to# user@that.users.mailhost.## For the sake of consistency between sender and recipient addresses,# myorigin also specifies the default domain name that is appended# to recipient addresses that have no @domain part.#myorigin = $myhostnamemyorigin = $mydomain# RECEIVING MAIL# The inet_interfaces parameter specifies the network interface# addresses that this mail system receives mail on. By default,# the software claims all active interfaces on the machine. The# parameter also controls delivery of mail to user@[ip.address].## See also the proxy_interfaces parameter, for network addresses that# are forwarded to us via a proxy or network address translator.## Note: you need to stop/start Postfix when this parameter changes.#inet_interfaces = allinet_interfaces = $myhostnameinet_interfaces = $myhostname, localhost.$mydomain, $mydomaininet_interfaces = fedor# The proxy_interfaces parameter specifies the network interface# addresses that this mail system receives mail on by way of a# proxy or network address translation unit. This setting extends# the address list specified with the inet_interfaces parameter.## You must specify your proxy/NAT addresses when your system is a# backup MX host for other domains, otherwise mail delivery loops# will happen when the primary MX host is down.##proxy_interfaces =#proxy_interfaces = 1.2.3.4# The mydestination parameter specifies the list of domains that this# machine considers itself the final destination for.## These domains are routed to the delivery agent specified with the# local_transport parameter setting. By default, that is the UNIX# compatible delivery agent that lookups all recipients in /etc/passwd# and /etc/aliases or their equivalent.## The default is $myhostname + localhost.$mydomain. On a mail domain# gateway, you should also include $mydomain.## Do not specify the names of virtual domains - those domains are# specified elsewhere (see VIRTUAL_README).## Do not specify the names of domains that this machine is backup MX# host for. Specify those names via the relay_domains settings for# the SMTP server, or use permit_mx_backup if you are lazy (see# STANDARD_CONFIGURATION_README).## The local machine is always the final destination for mail addressed# to user@[the.net.work.address] of an interface that the mail system# receives mail on (see the inet_interfaces parameter).## Specify a list of host or domain names, /file/name or type:table# patterns, separated by commas and/or whitespace. A /file/name# pattern is replaced by its contents; a type:table is matched when# a name matches a lookup key (the right-hand side is ignored).# Continue long lines by starting the next line with whitespace.## See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS".#mydestination = $myhostname, localhost.$mydomain, localhost#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,# mail.$mydomain, www.$mydomain, ftp.$mydomain# REJECTING MAIL FOR UNKNOWN LOCAL USERS## The local_recipient_maps parameter specifies optional lookup tables# with all names or addresses of users that are local with respect# to $mydestination, $inet_interfaces or $proxy_interfaces.## If this parameter is defined, then the SMTP server will reject# mail for unknown local users. This parameter is defined by default.## To turn off local recipient checking in the SMTP server, specify# local_recipient_maps = (i.e. empty).## The default setting assumes that you use the default Postfix local# delivery agent for local delivery. You need to update the# local_recipient_maps setting if:## - You define $mydestination domain recipients in files other than# /etc/passwd, /etc/aliases, or the $virtual_alias_maps files.# For example, you define $mydestination domain recipients in # the $virtual_mailbox_maps files.## - You redefine the local delivery agent in master.cf.## - You redefine the "local_transport" setting in main.cf.## - You use the "luser_relay", "mailbox_transport", or "fallback_transport"# feature of the Postfix local delivery agent (see local(8)).## Details are described in the LOCAL_RECIPIENT_README file.## Beware: if the Postfix SMTP server runs chrooted, you probably have# to access the passwd file via the proxymap service, in order to# overcome chroot restrictions. The alternative, having a copy of# the system passwd file in the chroot jail is just not practical.## The right-hand side of the lookup tables is conveniently ignored.# In the left-hand side, specify a bare username, an @domain.tld# wild-card, or specify a user@domain.tld address.# #local_recipient_maps = unix:passwd.byname $alias_maps#local_recipient_maps = proxy:unix:passwd.byname $alias_maps#local_recipient_maps =# The unknown_local_recipient_reject_code specifies the SMTP server# response code when a recipient domain matches $mydestination or# ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty# and the recipient address or address local-part is not found.## The default setting is 550 (reject mail) but it is safer to start# with 450 (try again later) until you are certain that your# local_recipient_maps settings are OK.#unknown_local_recipient_reject_code = 550# TRUST AND RELAY CONTROL# The mynetworks parameter specifies the list of "trusted" SMTP# clients that have more privileges than "strangers".## In particular, "trusted" SMTP clients are allowed to relay mail# through Postfix. See the smtpd_recipient_restrictions parameter# in postconf(5).## You can specify the list of "trusted" network addresses by hand# or you can let Postfix do it for you (which is the default).## By default (mynetworks_style = subnet), Postfix "trusts" SMTP# clients in the same IP subnetworks as the local machine.# On Linux, this does works correctly only with interfaces specified# with the "ifconfig" command.# # Specify "mynetworks_style = class" when Postfix should "trust" SMTP# clients in the same IP class A/B/C networks as the local machine.# Don‘t do this with a dialup site - it would cause Postfix to "trust"# your entire provider‘s network. Instead, specify an explicit# mynetworks list by hand, as described below.# # Specify "mynetworks_style = host" when Postfix should "trust"# only the local machine.# #mynetworks_style = class#mynetworks_style = subnet#mynetworks_style = host# Alternatively, you can specify the mynetworks list by hand, in# which case Postfix ignores the mynetworks_style setting.## Specify an explicit list of network/netmask patterns, where the# mask specifies the number of bits in the network part of a host# address.## You can also specify the absolute pathname of a pattern file instead# of listing the patterns here. Specify type:table for table-based lookups# (the value on the table right-hand side is not used).#mynetworks = 192.168.230.0/32#mynetworks = $config_directory/mynetworks#mynetworks = hash:/etc/postfix/network_table# The relay_domains parameter restricts what destinations this system will# relay mail to. See the smtpd_recipient_restrictions description in# postconf(5) for detailed information.## By default, Postfix relays mail# - from "trusted" clients (IP address matches $mynetworks) to any destination,# - from "untrusted" clients to destinations that match $relay_domains or# subdomains thereof, except addresses with sender-specified routing.# The default relay_domains value is $mydestination.# # In addition to the above, the Postfix SMTP server by default accepts mail# that Postfix is final destination for:# - destinations that match $inet_interfaces or $proxy_interfaces,# - destinations that match $mydestination# - destinations that match $virtual_alias_domains,# - destinations that match $virtual_mailbox_domains.# These destinations do not need to be listed in $relay_domains.# # Specify a list of hosts or domains, /file/name patterns or type:name# lookup tables, separated by commas and/or whitespace. Continue# long lines by starting the next line with whitespace. A file name# is replaced by its contents; a type:name table is matched when a# (parent) domain appears as lookup key.## NOTE: Postfix will not automatically forward mail for domains that# list this system as their primary or backup MX host. See the# permit_mx_backup restriction description in postconf(5).##relay_domains = $mydestination# INTERNET OR INTRANET# The relayhost parameter specifies the default host to send mail to# when no entry is matched in the optional transport(5) table. When# no relayhost is given, mail is routed directly to the destination.## On an intranet, specify the organizational domain name. If your# internal DNS uses no MX records, specify the name of the intranet# gateway host instead.## In the case of SMTP, specify a domain, host, host:port, [host]:port,# [address] or [address]:port; the form [host] turns off MX lookups.## If you‘re connected via UUCP, see also the default_transport parameter.#relayhost = $mydomain#relayhost = [gateway.my.domain]#relayhost = [mailserver.isp.tld]#relayhost = uucphost#relayhost = [an.ip.add.ress]# REJECTING UNKNOWN RELAY USERS## The relay_recipient_maps parameter specifies optional lookup tables# with all addresses in the domains that match $relay_domains.## If this parameter is defined, then the SMTP server will reject# mail for unknown relay users. This feature is off by default.## The right-hand side of the lookup tables is conveniently ignored.# In the left-hand side, specify an @domain.tld wild-card, or specify# a user@domain.tld address.# #relay_recipient_maps = hash:/etc/postfix/relay_recipients# INPUT RATE CONTROL## The in_flow_delay configuration parameter implements mail input# flow control. This feature is turned on by default, although it# still needs further development (it‘s disabled on SCO UNIX due# to an SCO bug).# # A Postfix process will pause for $in_flow_delay seconds before# accepting a new message, when the message arrival rate exceeds the# message delivery rate. With the default 100 SMTP server process# limit, this limits the mail inflow to 100 messages a second more# than the number of messages delivered per second.# # Specify 0 to disable the feature. Valid delays are 0..10.# #in_flow_delay = 1s# ADDRESS REWRITING## The ADDRESS_REWRITING_README document gives information about# address masquerading or other forms of address rewriting including# username->Firstname.Lastname mapping.# ADDRESS REDIRECTION (VIRTUAL DOMAIN)## The VIRTUAL_README document gives information about the many forms# of domain hosting that Postfix supports.# "USER HAS MOVED" BOUNCE MESSAGES## See the discussion in the ADDRESS_REWRITING_README document.# TRANSPORT MAP## See the discussion in the ADDRESS_REWRITING_README document.# ALIAS DATABASE## The alias_maps parameter specifies the list of alias databases used# by the local delivery agent. The default list is system dependent.## On systems with NIS, the default is to search the local alias# database, then the NIS alias database. See aliases(5) for syntax# details.# # If you change the alias database, run "postalias /etc/aliases" (or# wherever your system stores the mail alias file), or simply run# "newaliases" to build the necessary DBM or DB file.## It will take a minute or so before changes become visible. Use# "postfix reload" to eliminate the delay.##alias_maps = dbm:/etc/aliasesalias_maps = hash:/etc/aliases#alias_maps = hash:/etc/aliases, nis:mail.aliases#alias_maps = netinfo:/aliases# The alias_database parameter specifies the alias database(s) that# are built with "newaliases" or "sendmail -bi". This is a separate# configuration parameter, because alias_maps (see above) may specify# tables that are not necessarily all under control by Postfix.##alias_database = dbm:/etc/aliases#alias_database = dbm:/etc/mail/aliasesalias_database = hash:/etc/aliases#alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases# ADDRESS EXTENSIONS (e.g., user+foo)## The recipient_delimiter parameter specifies the separator between# user names and address extensions (user+foo). See canonical(5),# local(8), relocated(5) and virtual(5) for the effects this has on# aliases, canonical, virtual, relocated and .forward file lookups.# Basically, the software tries user+foo and .forward+foo before# trying user and .forward.##recipient_delimiter = +# DELIVERY TO MAILBOX## The home_mailbox parameter specifies the optional pathname of a# mailbox file relative to a user‘s home directory. The default# mailbox file is /var/spool/mail/user or /var/mail/user. Specify# "Maildir/" for qmail-style delivery (the / is required).##home_mailbox = Mailbox#home_mailbox = Maildir/ # The mail_spool_directory parameter specifies the directory where# UNIX-style mailboxes are kept. The default setting depends on the# system type.##mail_spool_directory = /var/mail#mail_spool_directory = /var/spool/mail# The mailbox_command parameter specifies the optional external# command to use instead of mailbox delivery. The command is run as# the recipient with proper HOME, SHELL and LOGNAME environment settings.# Exception: delivery for root is done as $default_user.## Other environment variables of interest: USER (recipient username),# EXTENSION (address extension), DOMAIN (domain part of address),# and LOCAL (the address localpart).## Unlike other Postfix configuration parameters, the mailbox_command# parameter is not subjected to $parameter substitutions. This is to# make it easier to specify shell syntax (see example below).## Avoid shell meta characters because they will force Postfix to run# an expensive shell process. Procmail alone is expensive enough.## IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN# ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER.#mailbox_command = /some/where/procmail#mailbox_command = /some/where/procmail -a "$EXTENSION"# The mailbox_transport specifies the optional transport in master.cf# to use after processing aliases and .forward files. This parameter# has precedence over the mailbox_command, fallback_transport and# luser_relay parameters.## Specify a string of the form transport:nexthop, where transport is# the name of a mail delivery transport defined in master.cf. The# :nexthop part is optional. For more details see the sample transport# configuration file.## NOTE: if you use this feature for accounts not in the UNIX password# file, then you must update the "local_recipient_maps" setting in# the main.cf file, otherwise the SMTP server will reject mail for # non-UNIX accounts with "User unknown in local recipient table".##mailbox_transport = lmtp:unix:/file/name#mailbox_transport = cyrus# The fallback_transport specifies the optional transport in master.cf# to use for recipients that are not found in the UNIX passwd database.# This parameter has precedence over the luser_relay parameter.## Specify a string of the form transport:nexthop, where transport is# the name of a mail delivery transport defined in master.cf. The# :nexthop part is optional. For more details see the sample transport# configuration file.## NOTE: if you use this feature for accounts not in the UNIX password# file, then you must update the "local_recipient_maps" setting in# the main.cf file, otherwise the SMTP server will reject mail for # non-UNIX accounts with "User unknown in local recipient table".##fallback_transport = lmtp:unix:/file/name#fallback_transport = cyrus#fallback_transport =# The luser_relay parameter specifies an optional destination address# for unknown recipients. By default, mail for unknown@$mydestination,# unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned# as undeliverable.## The following expansions are done on luser_relay: $user (recipient# username), $shell (recipient shell), $home (recipient home directory),# $recipient (full recipient address), $extension (recipient address# extension), $domain (recipient domain), $local (entire recipient# localpart), $recipient_delimiter. Specify ${name?value} or# ${name:value} to expand value only when $name does (does not) exist.## luser_relay works only for the default Postfix local delivery agent.## NOTE: if you use this feature for accounts not in the UNIX password# file, then you must specify "local_recipient_maps =" (i.e. empty) in# the main.cf file, otherwise the SMTP server will reject mail for # non-UNIX accounts with "User unknown in local recipient table".##luser_relay = $user@other.host#luser_relay = $local@other.host#luser_relay = admin+$local # JUNK MAIL CONTROLS# # The controls listed here are only a very small subset. The file# SMTPD_ACCESS_README provides an overview.# The header_checks parameter specifies an optional table with patterns# that each logical message header is matched against, including# headers that span multiple physical lines.## By default, these patterns also apply to MIME headers and to the# headers of attached messages. With older Postfix versions, MIME and# attached message headers were treated as body text.## For details, see "man header_checks".##header_checks = regexp:/etc/postfix/header_checks# FAST ETRN SERVICE## Postfix maintains per-destination logfiles with information about# deferred mail, so that mail can be flushed quickly with the SMTP# "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld".# See the ETRN_README document for a detailed description.# # The fast_flush_domains parameter controls what destinations are# eligible for this service. By default, they are all domains that# this server is willing to relay mail to.# #fast_flush_domains = $relay_domains# SHOW SOFTWARE VERSION OR NOT## The smtpd_banner parameter specifies the text that follows the 220# code in the SMTP server‘s greeting banner. Some people like to see# the mail version advertised. By default, Postfix shows no version.## You MUST specify $myhostname at the start of the text. That is an# RFC requirement. Postfix itself does not care.##smtpd_banner = $myhostname ESMTP READY#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)# PARALLEL DELIVERY TO THE SAME DESTINATION## How many parallel deliveries to the same user or domain? With local# delivery, it does not make sense to do massively parallel delivery# to the same user, because mailbox updates must happen sequentially,# and expensive pipelines in .forward files can cause disasters when# too many are run at the same time. With SMTP deliveries, 10# simultaneous connections to the same domain could be sufficient to# raise eyebrows.# # Each message delivery transport has its XXX_destination_concurrency_limit# parameter. The default is $default_destination_concurrency_limit for# most delivery transports. For the local delivery agent the default is 2.#local_destination_concurrency_limit = 2#default_destination_concurrency_limit = 20# DEBUGGING CONTROL## The debug_peer_level parameter specifies the increment in verbose# logging level when an SMTP client or server host name or address# matches a pattern in the debug_peer_list parameter.#debug_peer_level = 2# The debug_peer_list parameter specifies an optional list of domain# or network patterns, /file/name patterns or type:name tables. When# an SMTP client or server host name or address matches a pattern,# increase the verbose logging level by the amount specified in the# debug_peer_level parameter.##debug_peer_list = 127.0.0.1#debug_peer_list = some.domain# The debugger_command specifies the external command that is executed# when a Postfix daemon program is run with the -D option.## Use "command .. & sleep 5" so that the debugger can attach before# the process marches on. If you use an X-based debugger, be sure to# set up your XAUTHORITY environment variable before starting Postfix.#debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin xxgdb $daemon_directory/$process_name $process_id & sleep 5# If you can‘t use X, use this to capture the call stack when a# daemon crashes. The result is in a file in the configuration# directory, and is named after the process name and the process ID.## debugger_command =# PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont;# echo where) | gdb $daemon_directory/$process_name $process_id 2>&1# >$config_directory/$process_name.$process_id.log & sleep 5## Another possibility is to run gdb under a detached screen session.# To attach to the screen sesssion, su root and run "screen -r# <id_string>" where <id_string> uniquely matches one of the detached# sessions (from "screen -list").## debugger_command =# PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen# -dmS $process_name gdb $daemon_directory/$process_name# $process_id & sleep 1# INSTALL-TIME CONFIGURATION INFORMATION## The following parameters are used when installing a new Postfix version.# # sendmail_path: The full pathname of the Postfix sendmail command.# This is the Sendmail-compatible mail posting interface.# sendmail_path = /usr/sbin/sendmail.postfix# newaliases_path: The full pathname of the Postfix newaliases command.# This is the Sendmail-compatible command to build alias databases.#newaliases_path = /usr/bin/newaliases.postfix# mailq_path: The full pathname of the Postfix mailq command. This# is the Sendmail-compatible mail queue listing command.# mailq_path = /usr/bin/mailq.postfix# setgid_group: The group for mail submission and queue management# commands. This must be a group name with a numerical group ID that# is not shared with other accounts, not even with the Postfix account.#setgid_group = postdrop# html_directory: The location of the Postfix HTML documentation.#html_directory = no# manpage_directory: The location of the Postfix on-line manual pages.#manpage_directory = /usr/share/man# sample_directory: The location of the Postfix sample configuration files.# This parameter is obsolete as of Postfix 2.1.#sample_directory = /usr/share/doc/postfix-2.2.2/samples# readme_directory: The location of the Postfix README files.#readme_directory = /usr/share/doc/postfix-2.2.2/README_FILES