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  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. # QUEUE AND PROCESS OWNERSHIP
  45. #
  46. # The mail_owner parameter specifies the owner of the Postfix queue
  47. # and of most Postfix daemon processes.  Specify the name of a user
  48. # account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS
  49. # AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM.  In
  50. # particular, don't specify nobody or daemon. PLEASE USE A DEDICATED
  51. # USER.
  52. #
  53. mail_owner = postfix
  54.  
  55. # The default_privs parameter specifies the default rights used by
  56. # the local delivery agent for delivery to external file or command.
  57. # These rights are used in the absence of a recipient user context.
  58. # DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.
  59. #
  60. #default_privs = nobody
  61.  
  62. # INTERNET HOST AND DOMAIN NAMES
  63. #
  64. # The myhostname parameter specifies the internet hostname of this
  65. # mail system. The default is to use the fully-qualified domain name
  66. # from gethostname(). $myhostname is used as a default value for many
  67. # other configuration parameters.
  68. #
  69. #myhostname = host.domain.tld
  70. #myhostname = virtual.domain.tld
  71.  
  72. # The mydomain parameter specifies the local internet domain name.
  73. # The default is to use $myhostname minus the first component.
  74. # $mydomain is used as a default value for many other configuration
  75. # parameters.
  76. #
  77. #mydomain = domain.tld
  78.  
  79. # SENDING MAIL
  80. #
  81. # The myorigin parameter specifies the domain that locally-posted
  82. # mail appears to come from. The default is to append $myhostname,
  83. # which is fine for small sites.  If you run a domain with multiple
  84. # machines, you should (1) change this to $mydomain and (2) set up
  85. # a domain-wide alias database that aliases each user to
  86. # user@that.users.mailhost.
  87. #
  88. # For the sake of consistency between sender and recipient addresses,
  89. # myorigin also specifies the default domain name that is appended
  90. # to recipient addresses that have no @domain part.
  91. #
  92. #myorigin = $myhostname
  93. #myorigin = $mydomain
  94.  
  95. # RECEIVING MAIL
  96.  
  97. # The inet_interfaces parameter specifies the network interface
  98. # addresses that this mail system receives mail on.  By default,
  99. # the software claims all active interfaces on the machine. The
  100. # parameter also controls delivery of mail to user@[ip.address].
  101. #
  102. # See also the proxy_interfaces parameter, for network addresses that
  103. # are forwarded to us via a proxy or network address translator.
  104. #
  105. # Note: you need to stop/start Postfix when this parameter changes.
  106. #
  107. inet_interfaces = all
  108. #inet_interfaces = $myhostname
  109. #inet_interfaces = $myhostname, localhost
  110. #inet_interfaces = localhost
  111.  
  112. # The proxy_interfaces parameter specifies the network interface
  113. # addresses that this mail system receives mail on by way of a
  114. # proxy or network address translation unit. This setting extends
  115. # the address list specified with the inet_interfaces parameter.
  116. #
  117. # You must specify your proxy/NAT addresses when your system is a
  118. # backup MX host for other domains, otherwise mail delivery loops
  119. # will happen when the primary MX host is down.
  120. #
  121. #proxy_interfaces =
  122. #proxy_interfaces = 1.2.3.4
  123.  
  124. # The mydestination parameter specifies the list of domains that this
  125. # machine considers itself the final destination for.
  126. #
  127. # These domains are routed to the delivery agent specified with the
  128. # local_transport parameter setting. By default, that is the UNIX
  129. # compatible delivery agent that lookups all recipients in /etc/passwd
  130. # and /etc/aliases or their equivalent.
  131. #
  132. # The default is $myhostname + localhost.$mydomain.  On a mail domain
  133. # gateway, you should also include $mydomain.
  134. #
  135. # Do not specify the names of virtual domains - those domains are
  136. # specified elsewhere (see VIRTUAL_README).
  137. #
  138. # Do not specify the names of domains that this machine is backup MX
  139. # host for. Specify those names via the relay_domains settings for
  140. # the SMTP server, or use permit_mx_backup if you are lazy (see
  141. # STANDARD_CONFIGURATION_README).
  142. #
  143. # The local machine is always the final destination for mail addressed
  144. # to user@[the.net.work.address] of an interface that the mail system
  145. # receives mail on (see the inet_interfaces parameter).
  146. #
  147. # Specify a list of host or domain names, /file/name or type:table
  148. # patterns, separated by commas and/or whitespace. A /file/name
  149. # pattern is replaced by its contents; a type:table is matched when
  150. # a name matches a lookup key (the right-hand side is ignored).
  151. # Continue long lines by starting the next line with whitespace.
  152. #
  153. # See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS".
  154. #
  155. #mydestination = $myhostname, localhost.$mydomain, localhost, li40-137.members.linode.com
  156. mydestination = localhost, li40-137.members.linode.com
  157. #mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
  158. #mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
  159. #       mail.$mydomain, www.$mydomain, ftp.$mydomain
  160.  
  161. # REJECTING MAIL FOR UNKNOWN LOCAL USERS
  162. #
  163. # The local_recipient_maps parameter specifies optional lookup tables
  164. # with all names or addresses of users that are local with respect
  165. # to $mydestination, $inet_interfaces or $proxy_interfaces.
  166. #
  167. # If this parameter is defined, then the SMTP server will reject
  168. # mail for unknown local users. This parameter is defined by default.
  169. #
  170. # To turn off local recipient checking in the SMTP server, specify
  171. # local_recipient_maps = (i.e. empty).
  172. #
  173. # The default setting assumes that you use the default Postfix local
  174. # delivery agent for local delivery. You need to update the
  175. # local_recipient_maps setting if:
  176. #
  177. # - You define $mydestination domain recipients in files other than
  178. #   /etc/passwd, /etc/aliases, or the $virtual_alias_maps files.
  179. #   For example, you define $mydestination domain recipients in
  180. #   the $virtual_mailbox_maps files.
  181. #
  182. # - You redefine the local delivery agent in master.cf.
  183. #
  184. # - You redefine the "local_transport" setting in main.cf.
  185. #
  186. # - You use the "luser_relay", "mailbox_transport", or "fallback_transport"
  187. #   feature of the Postfix local delivery agent (see local(8)).
  188. #
  189. # Details are described in the LOCAL_RECIPIENT_README file.
  190. #
  191. # Beware: if the Postfix SMTP server runs chrooted, you probably have
  192. # to access the passwd file via the proxymap service, in order to
  193. # overcome chroot restrictions. The alternative, having a copy of
  194. # the system passwd file in the chroot jail is just not practical.
  195. #
  196. # The right-hand side of the lookup tables is conveniently ignored.
  197. # In the left-hand side, specify a bare username, an @domain.tld
  198. # wild-card, or specify a user@domain.tld address.
  199. #
  200. #local_recipient_maps = unix:passwd.byname $alias_maps
  201. #local_recipient_maps = proxy:unix:passwd.byname $alias_maps
  202. #local_recipient_maps =
  203.  
  204. # The unknown_local_recipient_reject_code specifies the SMTP server
  205. # response code when a recipient domain matches $mydestination or
  206. # ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty
  207. # and the recipient address or address local-part is not found.
  208. #
  209. # The default setting is 550 (reject mail) but it is safer to start
  210. # with 450 (try again later) until you are certain that your
  211. # local_recipient_maps settings are OK.
  212. #
  213. unknown_local_recipient_reject_code = 550
  214.  
  215. # TRUST AND RELAY CONTROL
  216.  
  217. # The mynetworks parameter specifies the list of "trusted" SMTP
  218. # clients that have more privileges than "strangers".
  219. #
  220. # In particular, "trusted" SMTP clients are allowed to relay mail
  221. # through Postfix.  See the smtpd_recipient_restrictions parameter
  222. # in postconf(5).
  223. #
  224. # You can specify the list of "trusted" network addresses by hand
  225. # or you can let Postfix do it for you (which is the default).
  226. #
  227. # By default (mynetworks_style = subnet), Postfix "trusts" SMTP
  228. # clients in the same IP subnetworks as the local machine.
  229. # On Linux, this does works correctly only with interfaces specified
  230. # with the "ifconfig" command.
  231. #
  232. # Specify "mynetworks_style = class" when Postfix should "trust" SMTP
  233. # clients in the same IP class A/B/C networks as the local machine.
  234. # Don't do this with a dialup site - it would cause Postfix to "trust"
  235. # your entire provider's network.  Instead, specify an explicit
  236. # mynetworks list by hand, as described below.
  237. #
  238. # Specify "mynetworks_style = host" when Postfix should "trust"
  239. # only the local machine.
  240. #
  241. #mynetworks_style = class
  242. #mynetworks_style = subnet
  243. #mynetworks_style = host
  244.  
  245. # Alternatively, you can specify the mynetworks list by hand, in
  246. # which case Postfix ignores the mynetworks_style setting.
  247. #
  248. # Specify an explicit list of network/netmask patterns, where the
  249. # mask specifies the number of bits in the network part of a host
  250. # address.
  251. #
  252. # You can also specify the absolute pathname of a pattern file instead
  253. # of listing the patterns here. Specify type:table for table-based lookups
  254. # (the value on the table right-hand side is not used).
  255. #
  256. #mynetworks = 168.100.189.0/28, 127.0.0.0/8
  257. #mynetworks = $config_directory/mynetworks
  258. #mynetworks = hash:/etc/postfix/network_table
  259.  
  260. # The relay_domains parameter restricts what destinations this system will
  261. # relay mail to.  See the smtpd_recipient_restrictions description in
  262. # postconf(5) for detailed information.
  263. #
  264. # By default, Postfix relays mail
  265. # - from "trusted" clients (IP address matches $mynetworks) to any destination,
  266. # - from "untrusted" clients to destinations that match $relay_domains or
  267. #   subdomains thereof, except addresses with sender-specified routing.
  268. # The default relay_domains value is $mydestination.
  269. #
  270. # In addition to the above, the Postfix SMTP server by default accepts mail
  271. # that Postfix is final destination for:
  272. # - destinations that match $inet_interfaces or $proxy_interfaces,
  273. # - destinations that match $mydestination
  274. # - destinations that match $virtual_alias_domains,
  275. # - destinations that match $virtual_mailbox_domains.
  276. # These destinations do not need to be listed in $relay_domains.
  277. #
  278. # Specify a list of hosts or domains, /file/name patterns or type:name
  279. # lookup tables, separated by commas and/or whitespace.  Continue
  280. # long lines by starting the next line with whitespace. A file name
  281. # is replaced by its contents; a type:name table is matched when a
  282. # (parent) domain appears as lookup key.
  283. #
  284. # NOTE: Postfix will not automatically forward mail for domains that
  285. # list this system as their primary or backup MX host. See the
  286. # permit_mx_backup restriction description in postconf(5).
  287. #
  288. #relay_domains = $mydestination
  289.  
  290. # INTERNET OR INTRANET
  291.  
  292. # The relayhost parameter specifies the default host to send mail to
  293. # when no entry is matched in the optional transport(5) table. When
  294. # no relayhost is given, mail is routed directly to the destination.
  295. #
  296. # On an intranet, specify the organizational domain name. If your
  297. # internal DNS uses no MX records, specify the name of the intranet
  298. # gateway host instead.
  299. #
  300. # In the case of SMTP, specify a domain, host, host:port, [host]:port,
  301. # [address] or [address]:port; the form [host] turns off MX lookups.
  302. #
  303. # If you're connected via UUCP, see also the default_transport parameter.
  304. #
  305. #relayhost = $mydomain
  306. #relayhost = [gateway.my.domain]
  307. #relayhost = [mailserver.isp.tld]
  308. #relayhost = uucphost
  309. #relayhost = [an.ip.add.ress]
  310.  
  311. # REJECTING UNKNOWN RELAY USERS
  312. #
  313. # The relay_recipient_maps parameter specifies optional lookup tables
  314. # with all addresses in the domains that match $relay_domains.
  315. #
  316. # If this parameter is defined, then the SMTP server will reject
  317. # mail for unknown relay users. This feature is off by default.
  318. #
  319. # The right-hand side of the lookup tables is conveniently ignored.
  320. # In the left-hand side, specify an @domain.tld wild-card, or specify
  321. # a user@domain.tld address.
  322. #
  323. #relay_recipient_maps = hash:/etc/postfix/relay_recipients
  324.  
  325. # INPUT RATE CONTROL
  326. #
  327. # The in_flow_delay configuration parameter implements mail input
  328. # flow control. This feature is turned on by default, although it
  329. # still needs further development (it's disabled on SCO UNIX due
  330. # to an SCO bug).
  331. #
  332. # A Postfix process will pause for $in_flow_delay seconds before
  333. # accepting a new message, when the message arrival rate exceeds the
  334. # message delivery rate. With the default 100 SMTP server process
  335. # limit, this limits the mail inflow to 100 messages a second more
  336. # than the number of messages delivered per second.
  337. #
  338. # Specify 0 to disable the feature. Valid delays are 0..10.
  339. #
  340. #in_flow_delay = 1s
  341.  
  342. # ADDRESS REWRITING
  343. #
  344. # The ADDRESS_REWRITING_README document gives information about
  345. # address masquerading or other forms of address rewriting including
  346. # username->Firstname.Lastname mapping.
  347.  
  348. # ADDRESS REDIRECTION (VIRTUAL DOMAIN)
  349. #
  350. # The VIRTUAL_README document gives information about the many forms
  351. # of domain hosting that Postfix supports.
  352.  
  353. # "USER HAS MOVED" BOUNCE MESSAGES
  354. #
  355. # See the discussion in the ADDRESS_REWRITING_README document.
  356.  
  357. # TRANSPORT MAP
  358. #
  359. # See the discussion in the ADDRESS_REWRITING_README document.
  360.  
  361. # ALIAS DATABASE
  362. #
  363. # The alias_maps parameter specifies the list of alias databases used
  364. # by the local delivery agent. The default list is system dependent.
  365. #
  366. # On systems with NIS, the default is to search the local alias
  367. # database, then the NIS alias database. See aliases(5) for syntax
  368. # details.
  369. #
  370. # If you change the alias database, run "postalias /etc/aliases" (or
  371. # wherever your system stores the mail alias file), or simply run
  372. # "newaliases" to build the necessary DBM or DB file.
  373. #
  374. # It will take a minute or so before changes become visible.  Use
  375. # "postfix reload" to eliminate the delay.
  376. #
  377. #alias_maps = dbm:/etc/aliases
  378. alias_maps = hash:/etc/aliases
  379. #alias_maps = hash:/etc/aliases, nis:mail.aliases
  380. #alias_maps = netinfo:/aliases
  381.  
  382. # The alias_database parameter specifies the alias database(s) that
  383. # are built with "newaliases" or "sendmail -bi".  This is a separate
  384. # configuration parameter, because alias_maps (see above) may specify
  385. # tables that are not necessarily all under control by Postfix.
  386. #
  387. #alias_database = dbm:/etc/aliases
  388. #alias_database = dbm:/etc/mail/aliases
  389. alias_database = hash:/etc/aliases
  390. #alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases
  391.  
  392. # ADDRESS EXTENSIONS (e.g., user+foo)
  393. #
  394. # The recipient_delimiter parameter specifies the separator between
  395. # user names and address extensions (user+foo). See canonical(5),
  396. # local(8), relocated(5) and virtual(5) for the effects this has on
  397. # aliases, canonical, virtual, relocated and .forward file lookups.
  398. # Basically, the software tries user+foo and .forward+foo before
  399. # trying user and .forward.
  400. #
  401. #recipient_delimiter = +
  402.  
  403. # DELIVERY TO MAILBOX
  404. #
  405. # The home_mailbox parameter specifies the optional pathname of a
  406. # mailbox file relative to a user's home directory. The default
  407. # mailbox file is /var/spool/mail/user or /var/mail/user.  Specify
  408. # "Maildir/" for qmail-style delivery (the / is required).
  409. #
  410. #home_mailbox = Mailbox
  411. #home_mailbox = Maildir/
  412.  
  413. # The mail_spool_directory parameter specifies the directory where
  414. # UNIX-style mailboxes are kept. The default setting depends on the
  415. # system type.
  416. #
  417. #mail_spool_directory = /var/mail
  418. #mail_spool_directory = /var/spool/mail
  419.  
  420. # The mailbox_command parameter specifies the optional external
  421. # command to use instead of mailbox delivery. The command is run as
  422. # the recipient with proper HOME, SHELL and LOGNAME environment settings.
  423. # Exception:  delivery for root is done as $default_user.
  424. #
  425. # Other environment variables of interest: USER (recipient username),
  426. # EXTENSION (address extension), DOMAIN (domain part of address),
  427. # and LOCAL (the address localpart).
  428. #
  429. # Unlike other Postfix configuration parameters, the mailbox_command
  430. # parameter is not subjected to $parameter substitutions. This is to
  431. # make it easier to specify shell syntax (see example below).
  432. #
  433. # Avoid shell meta characters because they will force Postfix to run
  434. # an expensive shell process. Procmail alone is expensive enough.
  435. #
  436. # IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN
  437. # ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER.
  438. #
  439. #mailbox_command = /some/where/procmail
  440. #mailbox_command = /some/where/procmail -a "$EXTENSION"
  441.  
  442. # The mailbox_transport specifies the optional transport in master.cf
  443. # to use after processing aliases and .forward files. This parameter
  444. # has precedence over the mailbox_command, fallback_transport and
  445. # luser_relay parameters.
  446. #
  447. # Specify a string of the form transport:nexthop, where transport is
  448. # the name of a mail delivery transport defined in master.cf.  The
  449. # :nexthop part is optional. For more details see the sample transport
  450. # configuration file.
  451. #
  452. # NOTE: if you use this feature for accounts not in the UNIX password
  453. # file, then you must update the "local_recipient_maps" setting in
  454. # the main.cf file, otherwise the SMTP server will reject mail for
  455. # non-UNIX accounts with "User unknown in local recipient table".
  456. #
  457. #mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
  458.  
  459. # If using the cyrus-imapd IMAP server deliver local mail to the IMAP
  460. # server using LMTP (Local Mail Transport Protocol), this is prefered
  461. # over the older cyrus deliver program by setting the
  462. # mailbox_transport as below:
  463. #
  464. # mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
  465. #
  466. # The efficiency of LMTP delivery for cyrus-imapd can be enhanced via
  467. # these settings.
  468. #
  469. # local_destination_recipient_limit = 300
  470. # local_destination_concurrency_limit = 5
  471. #
  472. # Of course you should adjust these settings as appropriate for the
  473. # capacity of the hardware you are using. The recipient limit setting
  474. # can be used to take advantage of the single instance message store
  475. # capability of Cyrus. The concurrency limit can be used to control
  476. # how many simultaneous LMTP sessions will be permitted to the Cyrus
  477. # message store.
  478. #
  479. # To use the old cyrus deliver program you have to set:
  480. #mailbox_transport = cyrus
  481.  
  482. # The fallback_transport specifies the optional transport in master.cf
  483. # to use for recipients that are not found in the UNIX passwd database.
  484. # This parameter has precedence over the luser_relay parameter.
  485. #
  486. # Specify a string of the form transport:nexthop, where transport is
  487. # the name of a mail delivery transport defined in master.cf.  The
  488. # :nexthop part is optional. For more details see the sample transport
  489. # configuration file.
  490. #
  491. # NOTE: if you use this feature for accounts not in the UNIX password
  492. # file, then you must update the "local_recipient_maps" setting in
  493. # the main.cf file, otherwise the SMTP server will reject mail for
  494. # non-UNIX accounts with "User unknown in local recipient table".
  495. #
  496. #fallback_transport = lmtp:unix:/var/lib/imap/socket/lmtp
  497. #fallback_transport =
  498.  
  499. # The luser_relay parameter specifies an optional destination address
  500. # for unknown recipients.  By default, mail for unknown@$mydestination,
  501. # unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned
  502. # as undeliverable.
  503. #
  504. # The following expansions are done on luser_relay: $user (recipient
  505. # username), $shell (recipient shell), $home (recipient home directory),
  506. # $recipient (full recipient address), $extension (recipient address
  507. # extension), $domain (recipient domain), $local (entire recipient
  508. # localpart), $recipient_delimiter. Specify ${name?value} or
  509. # ${name:value} to expand value only when $name does (does not) exist.
  510. #
  511. # luser_relay works only for the default Postfix local delivery agent.
  512. #
  513. # NOTE: if you use this feature for accounts not in the UNIX password
  514. # file, then you must specify "local_recipient_maps =" (i.e. empty) in
  515. # the main.cf file, otherwise the SMTP server will reject mail for
  516. # non-UNIX accounts with "User unknown in local recipient table".
  517. #
  518. #luser_relay = $user@other.host
  519. #luser_relay = $local@other.host
  520. #luser_relay = admin+$local
  521.  
  522. # JUNK MAIL CONTROLS
  523. #
  524. # The controls listed here are only a very small subset. The file
  525. # SMTPD_ACCESS_README provides an overview.
  526.  
  527. # The header_checks parameter specifies an optional table with patterns
  528. # that each logical message header is matched against, including
  529. # headers that span multiple physical lines.
  530. #
  531. # By default, these patterns also apply to MIME headers and to the
  532. # headers of attached messages. With older Postfix versions, MIME and
  533. # attached message headers were treated as body text.
  534. #
  535. # For details, see "man header_checks".
  536. #
  537. #header_checks = regexp:/etc/postfix/header_checks
  538.  
  539. # FAST ETRN SERVICE
  540. #
  541. # Postfix maintains per-destination logfiles with information about
  542. # deferred mail, so that mail can be flushed quickly with the SMTP
  543. # "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld".
  544. # See the ETRN_README document for a detailed description.
  545. #
  546. # The fast_flush_domains parameter controls what destinations are
  547. # eligible for this service. By default, they are all domains that
  548. # this server is willing to relay mail to.
  549. #
  550. #fast_flush_domains = $relay_domains
  551.  
  552. # SHOW SOFTWARE VERSION OR NOT
  553. #
  554. # The smtpd_banner parameter specifies the text that follows the 220
  555. # code in the SMTP server's greeting banner. Some people like to see
  556. # the mail version advertised. By default, Postfix shows no version.
  557. #
  558. # You MUST specify $myhostname at the start of the text. That is an
  559. # RFC requirement. Postfix itself does not care.
  560. #
  561. #smtpd_banner = $myhostname ESMTP $mail_name
  562. #smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
  563.  
  564. # PARALLEL DELIVERY TO THE SAME DESTINATION
  565. #
  566. # How many parallel deliveries to the same user or domain? With local
  567. # delivery, it does not make sense to do massively parallel delivery
  568. # to the same user, because mailbox updates must happen sequentially,
  569. # and expensive pipelines in .forward files can cause disasters when
  570. # too many are run at the same time. With SMTP deliveries, 10
  571. # simultaneous connections to the same domain could be sufficient to
  572. # raise eyebrows.
  573. #
  574. # Each message delivery transport has its XXX_destination_concurrency_limit
  575. # parameter.  The default is $default_destination_concurrency_limit for
  576. # most delivery transports. For the local delivery agent the default is 2.
  577.  
  578. #local_destination_concurrency_limit = 2
  579. #default_destination_concurrency_limit = 20
  580.  
  581. # DEBUGGING CONTROL
  582. #
  583. # The debug_peer_level parameter specifies the increment in verbose
  584. # logging level when an SMTP client or server host name or address
  585. # matches a pattern in the debug_peer_list parameter.
  586. #
  587. debug_peer_level = 2
  588.  
  589. # The debug_peer_list parameter specifies an optional list of domain
  590. # or network patterns, /file/name patterns or type:name tables. When
  591. # an SMTP client or server host name or address matches a pattern,
  592. # increase the verbose logging level by the amount specified in the
  593. # debug_peer_level parameter.
  594. #
  595. #debug_peer_list = 127.0.0.1
  596. #debug_peer_list = some.domain
  597.  
  598. # The debugger_command specifies the external command that is executed
  599. # when a Postfix daemon program is run with the -D option.
  600. #
  601. # Use "command .. & sleep 5" so that the debugger can attach before
  602. # the process marches on. If you use an X-based debugger, be sure to
  603. # set up your XAUTHORITY environment variable before starting Postfix.
  604. #
  605. debugger_command =
  606.          PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
  607.          xxgdb $daemon_directory/$process_name $process_id & sleep 5
  608.  
  609. # If you can't use X, use this to capture the call stack when a
  610. # daemon crashes. The result is in a file in the configuration
  611. # directory, and is named after the process name and the process ID.
  612. #
  613. # debugger_command =
  614. #       PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont;
  615. #       echo where) | gdb $daemon_directory/$process_name $process_id 2>&1
  616. #       >$config_directory/$process_name.$process_id.log & sleep 5
  617. #
  618. # Another possibility is to run gdb under a detached screen session.
  619. # To attach to the screen sesssion, su root and run "screen -r
  620. # <id_string>" where <id_string> uniquely matches one of the detached
  621. # sessions (from "screen -list").
  622. #
  623. # debugger_command =
  624. #       PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen
  625. #       -dmS $process_name gdb $daemon_directory/$process_name
  626. #       $process_id & sleep 1
  627.  
  628. # INSTALL-TIME CONFIGURATION INFORMATION
  629. #
  630. # The following parameters are used when installing a new Postfix version.
  631. #
  632. # sendmail_path: The full pathname of the Postfix sendmail command.
  633. # This is the Sendmail-compatible mail posting interface.
  634. #
  635. sendmail_path = /usr/sbin/sendmail.postfix
  636.  
  637. # newaliases_path: The full pathname of the Postfix newaliases command.
  638. # This is the Sendmail-compatible command to build alias databases.
  639. #
  640. newaliases_path = /usr/bin/newaliases.postfix
  641.  
  642. # mailq_path: The full pathname of the Postfix mailq command.  This
  643. # is the Sendmail-compatible mail queue listing command.
  644. #
  645. mailq_path = /usr/bin/mailq.postfix
  646.  
  647. # setgid_group: The group for mail submission and queue management
  648. # commands.  This must be a group name with a numerical group ID that
  649. # is not shared with other accounts, not even with the Postfix account.
  650. #
  651. setgid_group = postdrop
  652.  
  653. # html_directory: The location of the Postfix HTML documentation.
  654. #
  655. html_directory = no
  656.  
  657. # manpage_directory: The location of the Postfix on-line manual pages.
  658. #
  659. manpage_directory = /usr/share/man
  660.  
  661. # sample_directory: The location of the Postfix sample configuration files.
  662. # This parameter is obsolete as of Postfix 2.1.
  663. #
  664. sample_directory = /usr/share/doc/postfix-2.3.3/samples
  665.  
  666. # readme_directory: The location of the Postfix README files.
  667. #
  668. readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
  669.  
  670. virtual_alias_maps = hash:/etc/postfix/virtual
  671. virtual_alias_domains = = hash:/etc/postfix/domains
  672.  
  673. #DKIM
  674. milter_default_action = accept
  675. milter_protocol = 2
  676. smtpd_milters = inet:localhost:8891
  677. non_smtpd_milters = inet:localhost:8891
  678.  
  679. # Spam stuff
  680.  
  681. smtpd_delay_reject = yes
  682. smtpd_helo_required = yes
  683.  
  684. smtpd_helo_restrictions = check_helo_access hash:/etc/postfix/helo_access, reject_non_fqdn_hostname, reject_invalid_hostname, permit
  685.  
  686. smtpd_sender_restrictions = hash:/etc/postfix/access, permit_sasl_authenticated, permit_mynetworks, reject_non_fqdn_sender, reject_unknown_sender_domain, permit
  687. header_checks = pcre:/etc/postfix/header_checks
  688. #mime_header_checks = pcre:/etc/postfix/mime_header_checks
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