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  • /etc/postfix/main.cf

    # cat main.cf
         1  # Global Postfix configuration file. This file lists only a subset
         2  # of all parameters. For the syntax, and for a complete parameter
         3  # list, see the postconf(5) manual page (command: "man 5 postconf").
         4  #
         5  # For common configuration examples, see BASIC_CONFIGURATION_README
         6  # and STANDARD_CONFIGURATION_README. To find these documents, use
         7  # the command "postconf html_directory readme_directory", or go to
         8  # http://www.postfix.org/.
         9  #
        10  # For best results, change no more than 2-3 parameters at a time,
        11  # and test if Postfix still works after every change.
        12
        13  # SOFT BOUNCE
        14  #
        15  # The soft_bounce parameter provides a limited safety net for
        16  # testing.  When soft_bounce is enabled, mail will remain queued that
        17  # would otherwise bounce. This parameter disables locally-generated
        18  # bounces, and prevents the SMTP server from rejecting mail permanently
        19  # (by changing 5xx replies into 4xx replies). However, soft_bounce
        20  # is no cure for address rewriting mistakes or mail routing mistakes.
        21  #
        22  #soft_bounce = no
        23
        24  # LOCAL PATHNAME INFORMATION
        25  #
        26  # The queue_directory specifies the location of the Postfix queue.
        27  # This is also the root directory of Postfix daemons that run chrooted.
        28  # See the files in examples/chroot-setup for setting up Postfix chroot
        29  # environments on different UNIX systems.
        30  #
        31  queue_directory = /var/spool/postfix
        32
        33  # The command_directory parameter specifies the location of all
        34  # postXXX commands.
        35  #
        36  command_directory = /usr/sbin
        37
        38  # The daemon_directory parameter specifies the location of all Postfix
        39  # daemon programs (i.e. programs listed in the master.cf file). This
        40  # directory must be owned by root.
        41  #
        42  daemon_directory = /usr/libexec/postfix
        43
        44  # The data_directory parameter specifies the location of Postfix-writable
        45  # data files (caches, random numbers). This directory must be owned
        46  # by the mail_owner account (see below).
        47  #
        48  data_directory = /var/lib/postfix
        49
        50  # QUEUE AND PROCESS OWNERSHIP
        51  #
        52  # The mail_owner parameter specifies the owner of the Postfix queue
        53  # and of most Postfix daemon processes.  Specify the name of a user
        54  # account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS
        55  # AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM.  In
        56  # particular, don't specify nobody or daemon. PLEASE USE A DEDICATED
        57  # USER.
        58  #
        59  mail_owner = postfix
        60
        61  # The default_privs parameter specifies the default rights used by
        62  # the local delivery agent for delivery to external file or command.
        63  # These rights are used in the absence of a recipient user context.
        64  # DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.
        65  #
        66  #default_privs = nobody
        67
        68  # INTERNET HOST AND DOMAIN NAMES
        69  #
        70  # The myhostname parameter specifies the internet hostname of this
        71  # mail system. The default is to use the fully-qualified domain name
        72  # from gethostname(). $myhostname is used as a default value for many
        73  # other configuration parameters.
        74  #
        75  #myhostname = host.domain.tld
        76  #myhostname = virtual.domain.tld
        77
        78  # The mydomain parameter specifies the local internet domain name.
        79  # The default is to use $myhostname minus the first component.
        80  # $mydomain is used as a default value for many other configuration
        81  # parameters.
        82  #
        83  #mydomain = domain.tld
        84
        85  # SENDING MAIL
        86  #
        87  # The myorigin parameter specifies the domain that locally-posted
        88  # mail appears to come from. The default is to append $myhostname,
        89  # which is fine for small sites.  If you run a domain with multiple
        90  # machines, you should (1) change this to $mydomain and (2) set up
        91  # a domain-wide alias database that aliases each user to
        92  # user@that.users.mailhost.
        93  #
        94  # For the sake of consistency between sender and recipient addresses,
        95  # myorigin also specifies the default domain name that is appended
        96  # to recipient addresses that have no @domain part.
        97  #
        98  #myorigin = $myhostname
        99  #myorigin = $mydomain
       100
       101  # RECEIVING MAIL
       102
       103  # The inet_interfaces parameter specifies the network interface
       104  # addresses that this mail system receives mail on.  By default,
       105  # the software claims all active interfaces on the machine. The
       106  # parameter also controls delivery of mail to user@[ip.address].
       107  #
       108  # See also the proxy_interfaces parameter, for network addresses that
       109  # are forwarded to us via a proxy or network address translator.
       110  #
       111  # Note: you need to stop/start Postfix when this parameter changes.
       112  #
       113  #inet_interfaces = all
       114  #inet_interfaces = $myhostname
       115  #inet_interfaces = $myhostname, localhost
       116  inet_interfaces = localhost
       117
       118  # Enable IPv4, and IPv6 if supported
       119  inet_protocols = all
       120
       121  # The proxy_interfaces parameter specifies the network interface
       122  # addresses that this mail system receives mail on by way of a
       123  # proxy or network address translation unit. This setting extends
       124  # the address list specified with the inet_interfaces parameter.
       125  #
       126  # You must specify your proxy/NAT addresses when your system is a
       127  # backup MX host for other domains, otherwise mail delivery loops
       128  # will happen when the primary MX host is down.
       129  #
       130  #proxy_interfaces =
       131  #proxy_interfaces = 1.2.3.4
       132
       133  # The mydestination parameter specifies the list of domains that this
       134  # machine considers itself the final destination for.
       135  #
       136  # These domains are routed to the delivery agent specified with the
       137  # local_transport parameter setting. By default, that is the UNIX
       138  # compatible delivery agent that lookups all recipients in /etc/passwd
       139  # and /etc/aliases or their equivalent.
       140  #
       141  # The default is $myhostname + localhost.$mydomain.  On a mail domain
       142  # gateway, you should also include $mydomain.
       143  #
       144  # Do not specify the names of virtual domains - those domains are
       145  # specified elsewhere (see VIRTUAL_README).
       146  #
       147  # Do not specify the names of domains that this machine is backup MX
       148  # host for. Specify those names via the relay_domains settings for
       149  # the SMTP server, or use permit_mx_backup if you are lazy (see
       150  # STANDARD_CONFIGURATION_README).
       151  #
       152  # The local machine is always the final destination for mail addressed
       153  # to user@[the.net.work.address] of an interface that the mail system
       154  # receives mail on (see the inet_interfaces parameter).
       155  #
       156  # Specify a list of host or domain names, /file/name or type:table
       157  # patterns, separated by commas and/or whitespace. A /file/name
       158  # pattern is replaced by its contents; a type:table is matched when
       159  # a name matches a lookup key (the right-hand side is ignored).
       160  # Continue long lines by starting the next line with whitespace.
       161  #
       162  # See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS".
       163  #
       164  mydestination = $myhostname, localhost.$mydomain, localhost
       165  #mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
       166  #mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
       167  #       mail.$mydomain, www.$mydomain, ftp.$mydomain
       168
       169  # REJECTING MAIL FOR UNKNOWN LOCAL USERS
       170  #
       171  # The local_recipient_maps parameter specifies optional lookup tables
       172  # with all names or addresses of users that are local with respect
       173  # to $mydestination, $inet_interfaces or $proxy_interfaces.
       174  #
       175  # If this parameter is defined, then the SMTP server will reject
       176  # mail for unknown local users. This parameter is defined by default.
       177  #
       178  # To turn off local recipient checking in the SMTP server, specify
       179  # local_recipient_maps = (i.e. empty).
       180  #
       181  # The default setting assumes that you use the default Postfix local
       182  # delivery agent for local delivery. You need to update the
       183  # local_recipient_maps setting if:
       184  #
       185  # - You define $mydestination domain recipients in files other than
       186  #   /etc/passwd, /etc/aliases, or the $virtual_alias_maps files.
       187  #   For example, you define $mydestination domain recipients in    
       188  #   the $virtual_mailbox_maps files.
       189  #
       190  # - You redefine the local delivery agent in master.cf.
       191  #
       192  # - You redefine the "local_transport" setting in main.cf.
       193  #
       194  # - You use the "luser_relay", "mailbox_transport", or "fallback_transport"
       195  #   feature of the Postfix local delivery agent (see local(8)).
       196  #
       197  # Details are described in the LOCAL_RECIPIENT_README file.
       198  #
       199  # Beware: if the Postfix SMTP server runs chrooted, you probably have
       200  # to access the passwd file via the proxymap service, in order to
       201  # overcome chroot restrictions. The alternative, having a copy of
       202  # the system passwd file in the chroot jail is just not practical.
       203  #
       204  # The right-hand side of the lookup tables is conveniently ignored.
       205  # In the left-hand side, specify a bare username, an @domain.tld
       206  # wild-card, or specify a user@domain.tld address.
       207  #
       208  #local_recipient_maps = unix:passwd.byname $alias_maps
       209  #local_recipient_maps = proxy:unix:passwd.byname $alias_maps
       210  #local_recipient_maps =
       211
       212  # The unknown_local_recipient_reject_code specifies the SMTP server
       213  # response code when a recipient domain matches $mydestination or
       214  # ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty
       215  # and the recipient address or address local-part is not found.
       216  #
       217  # The default setting is 550 (reject mail) but it is safer to start
       218  # with 450 (try again later) until you are certain that your
       219  # local_recipient_maps settings are OK.
       220  #
       221  unknown_local_recipient_reject_code = 550
       222
       223  # TRUST AND RELAY CONTROL
       224
       225  # The mynetworks parameter specifies the list of "trusted" SMTP
       226  # clients that have more privileges than "strangers".
       227  #
       228  # In particular, "trusted" SMTP clients are allowed to relay mail
       229  # through Postfix.  See the smtpd_recipient_restrictions parameter
       230  # in postconf(5).
       231  #
       232  # You can specify the list of "trusted" network addresses by hand
       233  # or you can let Postfix do it for you (which is the default).
       234  #
       235  # By default (mynetworks_style = subnet), Postfix "trusts" SMTP
       236  # clients in the same IP subnetworks as the local machine.
       237  # On Linux, this does works correctly only with interfaces specified
       238  # with the "ifconfig" command.
       239  #
       240  # Specify "mynetworks_style = class" when Postfix should "trust" SMTP
       241  # clients in the same IP class A/B/C networks as the local machine.
       242  # Don't do this with a dialup site - it would cause Postfix to "trust"
       243  # your entire provider's network.  Instead, specify an explicit
       244  # mynetworks list by hand, as described below.
       245  #  
       246  # Specify "mynetworks_style = host" when Postfix should "trust"
       247  # only the local machine.
       248  #
       249  #mynetworks_style = class
       250  #mynetworks_style = subnet
       251  #mynetworks_style = host
       252
       253  # Alternatively, you can specify the mynetworks list by hand, in
       254  # which case Postfix ignores the mynetworks_style setting.
       255  #
       256  # Specify an explicit list of network/netmask patterns, where the
       257  # mask specifies the number of bits in the network part of a host
       258  # address.
       259  #
       260  # You can also specify the absolute pathname of a pattern file instead
       261  # of listing the patterns here. Specify type:table for table-based lookups
       262  # (the value on the table right-hand side is not used).
       263  #
       264  #mynetworks = 168.100.189.0/28, 127.0.0.0/8
       265  #mynetworks = $config_directory/mynetworks
       266  #mynetworks = hash:/etc/postfix/network_table
       267
       268  # The relay_domains parameter restricts what destinations this system will
       269  # relay mail to.  See the smtpd_recipient_restrictions description in
       270  # postconf(5) for detailed information.
       271  #
       272  # By default, Postfix relays mail
       273  # - from "trusted" clients (IP address matches $mynetworks) to any destination,
       274  # - from "untrusted" clients to destinations that match $relay_domains or
       275  #   subdomains thereof, except addresses with sender-specified routing.
       276  # The default relay_domains value is $mydestination.
       277  #
       278  # In addition to the above, the Postfix SMTP server by default accepts mail
       279  # that Postfix is final destination for:
       280  # - destinations that match $inet_interfaces or $proxy_interfaces,
       281  # - destinations that match $mydestination
       282  # - destinations that match $virtual_alias_domains,
       283  # - destinations that match $virtual_mailbox_domains.
       284  # These destinations do not need to be listed in $relay_domains.
       285  #
       286  # Specify a list of hosts or domains, /file/name patterns or type:name
       287  # lookup tables, separated by commas and/or whitespace.  Continue
       288  # long lines by starting the next line with whitespace. A file name
       289  # is replaced by its contents; a type:name table is matched when a
       290  # (parent) domain appears as lookup key.
       291  #
       292  # NOTE: Postfix will not automatically forward mail for domains that
       293  # list this system as their primary or backup MX host. See the
       294  # permit_mx_backup restriction description in postconf(5).
       295  #
       296  #relay_domains = $mydestination
       297
       298  # INTERNET OR INTRANET
       299
       300  # The relayhost parameter specifies the default host to send mail to
       301  # when no entry is matched in the optional transport(5) table. When
       302  # no relayhost is given, mail is routed directly to the destination.
       303  #
       304  # On an intranet, specify the organizational domain name. If your
       305  # internal DNS uses no MX records, specify the name of the intranet
       306  # gateway host instead.
       307  #
       308  # In the case of SMTP, specify a domain, host, host:port, [host]:port,
       309  # [address] or [address]:port; the form [host] turns off MX lookups.
       310  #
       311  # If you're connected via UUCP, see also the default_transport parameter.
       312  #
       313  #relayhost = $mydomain
       314  #relayhost = [gateway.my.domain]
       315  #relayhost = [mailserver.isp.tld]
       316  #relayhost = uucphost
       317  #relayhost = [an.ip.add.ress]
       318
       319  # REJECTING UNKNOWN RELAY USERS
       320  #
       321  # The relay_recipient_maps parameter specifies optional lookup tables
       322  # with all addresses in the domains that match $relay_domains.
       323  #
       324  # If this parameter is defined, then the SMTP server will reject
       325  # mail for unknown relay users. This feature is off by default.
       326  #
       327  # The right-hand side of the lookup tables is conveniently ignored.
       328  # In the left-hand side, specify an @domain.tld wild-card, or specify
       329  # a user@domain.tld address.
       330  #
       331  #relay_recipient_maps = hash:/etc/postfix/relay_recipients
       332
       333  # INPUT RATE CONTROL
       334  #
       335  # The in_flow_delay configuration parameter implements mail input
       336  # flow control. This feature is turned on by default, although it
       337  # still needs further development (it's disabled on SCO UNIX due
       338  # to an SCO bug).
       339  #
       340  # A Postfix process will pause for $in_flow_delay seconds before
       341  # accepting a new message, when the message arrival rate exceeds the
       342  # message delivery rate. With the default 100 SMTP server process
       343  # limit, this limits the mail inflow to 100 messages a second more
       344  # than the number of messages delivered per second.
       345  #
       346  # Specify 0 to disable the feature. Valid delays are 0..10.
       347  #
       348  #in_flow_delay = 1s
       349
       350  # ADDRESS REWRITING
       351  #
       352  # The ADDRESS_REWRITING_README document gives information about
       353  # address masquerading or other forms of address rewriting including
       354  # username->Firstname.Lastname mapping.
       355
       356  # ADDRESS REDIRECTION (VIRTUAL DOMAIN)
       357  #
       358  # The VIRTUAL_README document gives information about the many forms
       359  # of domain hosting that Postfix supports.
       360
       361  # "USER HAS MOVED" BOUNCE MESSAGES
       362  #
       363  # See the discussion in the ADDRESS_REWRITING_README document.
       364
       365  # TRANSPORT MAP
       366  #
       367  # See the discussion in the ADDRESS_REWRITING_README document.
       368
       369  # ALIAS DATABASE
       370  #
       371  # The alias_maps parameter specifies the list of alias databases used
       372  # by the local delivery agent. The default list is system dependent.
       373  #
       374  # On systems with NIS, the default is to search the local alias
       375  # database, then the NIS alias database. See aliases(5) for syntax
       376  # details.
       377  #
       378  # If you change the alias database, run "postalias /etc/aliases" (or
       379  # wherever your system stores the mail alias file), or simply run
       380  # "newaliases" to build the necessary DBM or DB file.
       381  #
       382  # It will take a minute or so before changes become visible.  Use
       383  # "postfix reload" to eliminate the delay.
       384  #
       385  #alias_maps = dbm:/etc/aliases
       386  alias_maps = hash:/etc/aliases
       387  #alias_maps = hash:/etc/aliases, nis:mail.aliases
       388  #alias_maps = netinfo:/aliases
       389
       390  # The alias_database parameter specifies the alias database(s) that
       391  # are built with "newaliases" or "sendmail -bi".  This is a separate
       392  # configuration parameter, because alias_maps (see above) may specify
       393  # tables that are not necessarily all under control by Postfix.
       394  #
       395  #alias_database = dbm:/etc/aliases
       396  #alias_database = dbm:/etc/mail/aliases
       397  alias_database = hash:/etc/aliases
       398  #alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases
       399
       400  # ADDRESS EXTENSIONS (e.g., user+foo)
       401  #
       402  # The recipient_delimiter parameter specifies the separator between
       403  # user names and address extensions (user+foo). See canonical(5),
       404  # local(8), relocated(5) and virtual(5) for the effects this has on
       405  # aliases, canonical, virtual, relocated and .forward file lookups.
       406  # Basically, the software tries user+foo and .forward+foo before
       407  # trying user and .forward.
       408  #
       409  #recipient_delimiter = +
       410
       411  # DELIVERY TO MAILBOX
       412  #
       413  # The home_mailbox parameter specifies the optional pathname of a
       414  # mailbox file relative to a user's home directory. The default
       415  # mailbox file is /var/spool/mail/user or /var/mail/user.  Specify
       416  # "Maildir/" for qmail-style delivery (the / is required).
       417  #
       418  #home_mailbox = Mailbox
       419  #home_mailbox = Maildir/
       420   
       421  # The mail_spool_directory parameter specifies the directory where
       422  # UNIX-style mailboxes are kept. The default setting depends on the
       423  # system type.
       424  #
       425  #mail_spool_directory = /var/mail
       426  #mail_spool_directory = /var/spool/mail
       427
       428  # The mailbox_command parameter specifies the optional external
       429  # command to use instead of mailbox delivery. The command is run as
       430  # the recipient with proper HOME, SHELL and LOGNAME environment settings.
       431  # Exception:  delivery for root is done as $default_user.
       432  #
       433  # Other environment variables of interest: USER (recipient username),
       434  # EXTENSION (address extension), DOMAIN (domain part of address),
       435  # and LOCAL (the address localpart).
       436  #
       437  # Unlike other Postfix configuration parameters, the mailbox_command
       438  # parameter is not subjected to $parameter substitutions. This is to
       439  # make it easier to specify shell syntax (see example below).
       440  #
       441  # Avoid shell meta characters because they will force Postfix to run
       442  # an expensive shell process. Procmail alone is expensive enough.
       443  #
       444  # IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN
       445  # ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER.
       446  #
       447  #mailbox_command = /some/where/procmail
       448  #mailbox_command = /some/where/procmail -a "$EXTENSION"
       449
       450  # The mailbox_transport specifies the optional transport in master.cf
       451  # to use after processing aliases and .forward files. This parameter
       452  # has precedence over the mailbox_command, fallback_transport and
       453  # luser_relay parameters.
       454  #
       455  # Specify a string of the form transport:nexthop, where transport is
       456  # the name of a mail delivery transport defined in master.cf.  The
       457  # :nexthop part is optional. For more details see the sample transport
       458  # configuration file.
       459  #
       460  # NOTE: if you use this feature for accounts not in the UNIX password
       461  # file, then you must update the "local_recipient_maps" setting in
       462  # the main.cf file, otherwise the SMTP server will reject mail for    
       463  # non-UNIX accounts with "User unknown in local recipient table".
       464  #
       465  #mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
       466
       467  # If using the cyrus-imapd IMAP server deliver local mail to the IMAP
       468  # server using LMTP (Local Mail Transport Protocol), this is prefered
       469  # over the older cyrus deliver program by setting the
       470  # mailbox_transport as below:
       471  #
       472  # mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
       473  #
       474  # The efficiency of LMTP delivery for cyrus-imapd can be enhanced via
       475  # these settings.
       476  #
       477  # local_destination_recipient_limit = 300
       478  # local_destination_concurrency_limit = 5
       479  #
       480  # Of course you should adjust these settings as appropriate for the
       481  # capacity of the hardware you are using. The recipient limit setting
       482  # can be used to take advantage of the single instance message store
       483  # capability of Cyrus. The concurrency limit can be used to control
       484  # how many simultaneous LMTP sessions will be permitted to the Cyrus
       485  # message store.
       486  #
       487  # To use the old cyrus deliver program you have to set:
       488  #mailbox_transport = cyrus
       489
       490  # The fallback_transport specifies the optional transport in master.cf
       491  # to use for recipients that are not found in the UNIX passwd database.
       492  # This parameter has precedence over the luser_relay parameter.
       493  #
       494  # Specify a string of the form transport:nexthop, where transport is
       495  # the name of a mail delivery transport defined in master.cf.  The
       496  # :nexthop part is optional. For more details see the sample transport
       497  # configuration file.
       498  #
       499  # NOTE: if you use this feature for accounts not in the UNIX password
       500  # file, then you must update the "local_recipient_maps" setting in
       501  # the main.cf file, otherwise the SMTP server will reject mail for    
       502  # non-UNIX accounts with "User unknown in local recipient table".
       503  #
       504  #fallback_transport = lmtp:unix:/var/lib/imap/socket/lmtp
       505  #fallback_transport =
       506
       507  # The luser_relay parameter specifies an optional destination address
       508  # for unknown recipients.  By default, mail for unknown@$mydestination,
       509  # unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned
       510  # as undeliverable.
       511  #
       512  # The following expansions are done on luser_relay: $user (recipient
       513  # username), $shell (recipient shell), $home (recipient home directory),
       514  # $recipient (full recipient address), $extension (recipient address
       515  # extension), $domain (recipient domain), $local (entire recipient
       516  # localpart), $recipient_delimiter. Specify ${name?value} or
       517  # ${name:value} to expand value only when $name does (does not) exist.
       518  #
       519  # luser_relay works only for the default Postfix local delivery agent.
       520  #
       521  # NOTE: if you use this feature for accounts not in the UNIX password
       522  # file, then you must specify "local_recipient_maps =" (i.e. empty) in
       523  # the main.cf file, otherwise the SMTP server will reject mail for    
       524  # non-UNIX accounts with "User unknown in local recipient table".
       525  #
       526  #luser_relay = $user@other.host
       527  #luser_relay = $local@other.host
       528  #luser_relay = admin+$local
       529    
       530  # JUNK MAIL CONTROLS
       531  #
       532  # The controls listed here are only a very small subset. The file
       533  # SMTPD_ACCESS_README provides an overview.
       534
       535  # The header_checks parameter specifies an optional table with patterns
       536  # that each logical message header is matched against, including
       537  # headers that span multiple physical lines.
       538  #
       539  # By default, these patterns also apply to MIME headers and to the
       540  # headers of attached messages. With older Postfix versions, MIME and
       541  # attached message headers were treated as body text.
       542  #
       543  # For details, see "man header_checks".
       544  #
       545  #header_checks = regexp:/etc/postfix/header_checks
       546
       547  # FAST ETRN SERVICE
       548  #
       549  # Postfix maintains per-destination logfiles with information about
       550  # deferred mail, so that mail can be flushed quickly with the SMTP
       551  # "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld".
       552  # See the ETRN_README document for a detailed description.
       553  #
       554  # The fast_flush_domains parameter controls what destinations are
       555  # eligible for this service. By default, they are all domains that
       556  # this server is willing to relay mail to.
       557  #
       558  #fast_flush_domains = $relay_domains
       559
       560  # SHOW SOFTWARE VERSION OR NOT
       561  #
       562  # The smtpd_banner parameter specifies the text that follows the 220
       563  # code in the SMTP server's greeting banner. Some people like to see
       564  # the mail version advertised. By default, Postfix shows no version.
       565  #
       566  # You MUST specify $myhostname at the start of the text. That is an
       567  # RFC requirement. Postfix itself does not care.
       568  #
       569  #smtpd_banner = $myhostname ESMTP $mail_name
       570  #smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
       571
       572  # PARALLEL DELIVERY TO THE SAME DESTINATION
       573  #
       574  # How many parallel deliveries to the same user or domain? With local
       575  # delivery, it does not make sense to do massively parallel delivery
       576  # to the same user, because mailbox updates must happen sequentially,
       577  # and expensive pipelines in .forward files can cause disasters when
       578  # too many are run at the same time. With SMTP deliveries, 10
       579  # simultaneous connections to the same domain could be sufficient to
       580  # raise eyebrows.
       581  #
       582  # Each message delivery transport has its XXX_destination_concurrency_limit
       583  # parameter.  The default is $default_destination_concurrency_limit for
       584  # most delivery transports. For the local delivery agent the default is 2.
       585
       586  #local_destination_concurrency_limit = 2
       587  #default_destination_concurrency_limit = 20
       588
       589  # DEBUGGING CONTROL
       590  #
       591  # The debug_peer_level parameter specifies the increment in verbose
       592  # logging level when an SMTP client or server host name or address
       593  # matches a pattern in the debug_peer_list parameter.
       594  #
       595  debug_peer_level = 2
       596
       597  # The debug_peer_list parameter specifies an optional list of domain
       598  # or network patterns, /file/name patterns or type:name tables. When
       599  # an SMTP client or server host name or address matches a pattern,
       600  # increase the verbose logging level by the amount specified in the
       601  # debug_peer_level parameter.
       602  #
       603  #debug_peer_list = 127.0.0.1
       604  #debug_peer_list = some.domain
       605
       606  # The debugger_command specifies the external command that is executed
       607  # when a Postfix daemon program is run with the -D option.
       608  #
       609  # Use "command .. & sleep 5" so that the debugger can attach before
       610  # the process marches on. If you use an X-based debugger, be sure to
       611  # set up your XAUTHORITY environment variable before starting Postfix.
       612  #
       613  debugger_command =
       614           PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
       615           ddd $daemon_directory/$process_name $process_id & sleep 5
       616
       617  # If you can't use X, use this to capture the call stack when a
       618  # daemon crashes. The result is in a file in the configuration
       619  # directory, and is named after the process name and the process ID.
       620  #
       621  # debugger_command =
       622  #       PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont;
       623  #       echo where) | gdb $daemon_directory/$process_name $process_id 2>&1
       624  #       >$config_directory/$process_name.$process_id.log & sleep 5
       625  #
       626  # Another possibility is to run gdb under a detached screen session.
       627  # To attach to the screen sesssion, su root and run "screen -r
       628  # <id_string>" where <id_string> uniquely matches one of the detached
       629  # sessions (from "screen -list").
       630  #
       631  # debugger_command =
       632  #       PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen
       633  #       -dmS $process_name gdb $daemon_directory/$process_name
       634  #       $process_id & sleep 1
       635
       636  # INSTALL-TIME CONFIGURATION INFORMATION
       637  #
       638  # The following parameters are used when installing a new Postfix version.
       639  #
       640  # sendmail_path: The full pathname of the Postfix sendmail command.
       641  # This is the Sendmail-compatible mail posting interface.
       642  #
       643  sendmail_path = /usr/sbin/sendmail.postfix
       644
       645  # newaliases_path: The full pathname of the Postfix newaliases command.
       646  # This is the Sendmail-compatible command to build alias databases.
       647  #
       648  newaliases_path = /usr/bin/newaliases.postfix
       649
       650  # mailq_path: The full pathname of the Postfix mailq command.  This
       651  # is the Sendmail-compatible mail queue listing command.
       652  #
       653  mailq_path = /usr/bin/mailq.postfix
       654
       655  # setgid_group: The group for mail submission and queue management
       656  # commands.  This must be a group name with a numerical group ID that
       657  # is not shared with other accounts, not even with the Postfix account.
       658  #
       659  setgid_group = postdrop
       660
       661  # html_directory: The location of the Postfix HTML documentation.
       662  #
       663  html_directory = no
       664
       665  # manpage_directory: The location of the Postfix on-line manual pages.
       666  #
       667  manpage_directory = /usr/share/man
       668
       669  # sample_directory: The location of the Postfix sample configuration files.
       670  # This parameter is obsolete as of Postfix 2.1.
       671  #
       672  sample_directory = /usr/share/doc/postfix-2.6.6/samples
       673
       674  # readme_directory: The location of the Postfix README files.
       675  #
       676  readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES

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  • 原文地址:https://www.cnblogs.com/chromebook/p/4248960.html
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