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# 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/BASIC_CONFIGURATION_README.html etc.
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
# COMPATIBILITY
14
#
15
# The compatibility_level determines what default settings Postfix
16
# will use for main.cf and master.cf settings. These defaults will
17
# change over time.
18
#
19
# To avoid breaking things, Postfix will use backwards-compatible
20
# default settings and log where it uses those old backwards-compatible
21
# default settings, until the system administrator has determined
22
# if any backwards-compatible default settings need to be made
23
# permanent in main.cf or master.cf.
24
#
25
# When this review is complete, update the compatibility_level setting
26
# below as recommended in the RELEASE_NOTES file.
27
#
28
# The level below is what should be used with new (not upgrade) installs.
29
#
30
compatibility_level = 2
31
 
32
# SOFT BOUNCE
33
#
34
# The soft_bounce parameter provides a limited safety net for
35
# testing.  When soft_bounce is enabled, mail will remain queued that
36
# would otherwise bounce. This parameter disables locally-generated
37
# bounces, and prevents the SMTP server from rejecting mail permanently
38
# (by changing 5xx replies into 4xx replies). However, soft_bounce
39
# is no cure for address rewriting mistakes or mail routing mistakes.
40
#
41
#soft_bounce = no
42
 
43
# LOCAL PATHNAME INFORMATION
44
#
45
# The queue_directory specifies the location of the Postfix queue.
46
# This is also the root directory of Postfix daemons that run chrooted.
47
# See the files in examples/chroot-setup for setting up Postfix chroot
48
# environments on different UNIX systems.
49
#
50
queue_directory = /var/spool/postfix
51
 
52
# The command_directory parameter specifies the location of all
53
# postXXX commands.
54
#
55
command_directory = /usr/sbin
56
 
57
# The daemon_directory parameter specifies the location of all Postfix
58
# daemon programs (i.e. programs listed in the master.cf file). This
59
# directory must be owned by root.
60
#
61
daemon_directory = /usr/libexec/postfix
62
 
63
# The data_directory parameter specifies the location of Postfix-writable
64
# data files (caches, random numbers). This directory must be owned
65
# by the mail_owner account (see below).
66
#
67
data_directory = /var/lib/postfix
68
 
69
# QUEUE AND PROCESS OWNERSHIP
70
#
71
# The mail_owner parameter specifies the owner of the Postfix queue
72
# and of most Postfix daemon processes.  Specify the name of a user
73
# account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS
74
# AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM.  In
75
# particular, don't specify nobody or daemon. PLEASE USE A DEDICATED
76
# USER.
77
#
78
mail_owner = postfix
79
 
80
# The default_privs parameter specifies the default rights used by
81
# the local delivery agent for delivery to external file or command.
82
# These rights are used in the absence of a recipient user context.
83
# DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.
84
#
85
#default_privs = nobody
86
 
87
# INTERNET HOST AND DOMAIN NAMES
88
#
89
# The myhostname parameter specifies the internet hostname of this
90
# mail system. The default is to use the fully-qualified domain name
91
# from gethostname(). $myhostname is used as a default value for many
92
# other configuration parameters.
93
#
94
#myhostname = host.domain.tld
95
#myhostname = virtual.domain.tld
96
 
97
# The mydomain parameter specifies the local internet domain name.
98
# The default is to use $myhostname minus the first component.
99
# $mydomain is used as a default value for many other configuration
100
# parameters.
101
#
102
#mydomain = domain.tld
103
 
104
# SENDING MAIL
105
#
106
# The myorigin parameter specifies the domain that locally-posted
107
# mail appears to come from. The default is to append $myhostname,
108
# which is fine for small sites.  If you run a domain with multiple
109
# machines, you should (1) change this to $mydomain and (2) set up
110
# a domain-wide alias database that aliases each user to
111
# user@that.users.mailhost.
112
#
113
# For the sake of consistency between sender and recipient addresses,
114
# myorigin also specifies the default domain name that is appended
115
# to recipient addresses that have no @domain part.
116
#
117
#myorigin = $myhostname
118
#myorigin = $mydomain
119
 
120
# RECEIVING MAIL
121
 
122
# The inet_interfaces parameter specifies the network interface
123
# addresses that this mail system receives mail on.  By default,
124
# the software claims all active interfaces on the machine. The
125
# parameter also controls delivery of mail to user@[ip.address].
126
#
127
# See also the proxy_interfaces parameter, for network addresses that
128
# are forwarded to us via a proxy or network address translator.
129
#
130
# Note: you need to stop/start Postfix when this parameter changes.
131
#
132
#inet_interfaces = all
133
#inet_interfaces = $myhostname
134
#inet_interfaces = $myhostname, localhost
135
inet_interfaces = localhost
136
 
137
# Enable IPv4, and IPv6 if supported
138
inet_protocols = all
139
 
140
# The proxy_interfaces parameter specifies the network interface
141
# addresses that this mail system receives mail on by way of a
142
# proxy or network address translation unit. This setting extends
143
# the address list specified with the inet_interfaces parameter.
144
#
145
# You must specify your proxy/NAT addresses when your system is a
146
# backup MX host for other domains, otherwise mail delivery loops
147
# will happen when the primary MX host is down.
148
#
149
#proxy_interfaces =
150
#proxy_interfaces = 1.2.3.4
151
 
152
# The mydestination parameter specifies the list of domains that this
153
# machine considers itself the final destination for.
154
#
155
# These domains are routed to the delivery agent specified with the
156
# local_transport parameter setting. By default, that is the UNIX
157
# compatible delivery agent that lookups all recipients in /etc/passwd
158
# and /etc/aliases or their equivalent.
159
#
160
# The default is $myhostname + localhost.$mydomain + localhost.  On
161
# a mail domain gateway, you should also include $mydomain.
162
#
163
# Do not specify the names of virtual domains - those domains are
164
# specified elsewhere (see VIRTUAL_README).
165
#
166
# Do not specify the names of domains that this machine is backup MX
167
# host for. Specify those names via the relay_domains settings for
168
# the SMTP server, or use permit_mx_backup if you are lazy (see
169
# STANDARD_CONFIGURATION_README).
170
#
171
# The local machine is always the final destination for mail addressed
172
# to user@[the.net.work.address] of an interface that the mail system
173
# receives mail on (see the inet_interfaces parameter).
174
#
175
# Specify a list of host or domain names, /file/name or type:table
176
# patterns, separated by commas and/or whitespace. A /file/name
177
# pattern is replaced by its contents; a type:table is matched when
178
# a name matches a lookup key (the right-hand side is ignored).
179
# Continue long lines by starting the next line with whitespace.
180
#
181
# See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS".
182
#
183
mydestination = $myhostname, localhost.$mydomain, localhost
184
#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
185
#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
186
#	mail.$mydomain, www.$mydomain, ftp.$mydomain
187
 
188
# REJECTING MAIL FOR UNKNOWN LOCAL USERS
189
#
190
# The local_recipient_maps parameter specifies optional lookup tables
191
# with all names or addresses of users that are local with respect
192
# to $mydestination, $inet_interfaces or $proxy_interfaces.
193
#
194
# If this parameter is defined, then the SMTP server will reject
195
# mail for unknown local users. This parameter is defined by default.
196
#
197
# To turn off local recipient checking in the SMTP server, specify
198
# local_recipient_maps = (i.e. empty).
199
#
200
# The default setting assumes that you use the default Postfix local
201
# delivery agent for local delivery. You need to update the
202
# local_recipient_maps setting if:
203
#
204
# - You define $mydestination domain recipients in files other than
205
#   /etc/passwd, /etc/aliases, or the $virtual_alias_maps files.
206
#   For example, you define $mydestination domain recipients in
207
#   the $virtual_mailbox_maps files.
208
#
209
# - You redefine the local delivery agent in master.cf.
210
#
211
# - You redefine the "local_transport" setting in main.cf.
212
#
213
# - You use the "luser_relay", "mailbox_transport", or "fallback_transport"
214
#   feature of the Postfix local delivery agent (see local(8)).
215
#
216
# Details are described in the LOCAL_RECIPIENT_README file.
217
#
218
# Beware: if the Postfix SMTP server runs chrooted, you probably have
219
# to access the passwd file via the proxymap service, in order to
220
# overcome chroot restrictions. The alternative, having a copy of
221
# the system passwd file in the chroot jail is just not practical.
222
#
223
# The right-hand side of the lookup tables is conveniently ignored.
224
# In the left-hand side, specify a bare username, an @domain.tld
225
# wild-card, or specify a user@domain.tld address.
226
#
227
#local_recipient_maps = unix:passwd.byname $alias_maps
228
#local_recipient_maps = proxy:unix:passwd.byname $alias_maps
229
#local_recipient_maps =
230
 
231
# The unknown_local_recipient_reject_code specifies the SMTP server
232
# response code when a recipient domain matches $mydestination or
233
# ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty
234
# and the recipient address or address local-part is not found.
235
#
236
# The default setting is 550 (reject mail) but it is safer to start
237
# with 450 (try again later) until you are certain that your
238
# local_recipient_maps settings are OK.
239
#
240
unknown_local_recipient_reject_code = 550
241
 
242
# TRUST AND RELAY CONTROL
243
 
244
# The mynetworks parameter specifies the list of "trusted" SMTP
245
# clients that have more privileges than "strangers".
246
#
247
# In particular, "trusted" SMTP clients are allowed to relay mail
248
# through Postfix.  See the smtpd_recipient_restrictions parameter
249
# in postconf(5).
250
#
251
# You can specify the list of "trusted" network addresses by hand
252
# or you can let Postfix do it for you (which is the default).
253
#
254
# By default (mynetworks_style = subnet), Postfix "trusts" SMTP
255
# clients in the same IP subnetworks as the local machine.
197 - 256
# On Linux, this works correctly only with interfaces specified
192 - 257
# with the "ifconfig" command.
258
#
259
# Specify "mynetworks_style = class" when Postfix should "trust" SMTP
260
# clients in the same IP class A/B/C networks as the local machine.
261
# Don't do this with a dialup site - it would cause Postfix to "trust"
262
# your entire provider's network.  Instead, specify an explicit
263
# mynetworks list by hand, as described below.
264
#
265
# Specify "mynetworks_style = host" when Postfix should "trust"
266
# only the local machine.
267
#
268
#mynetworks_style = class
269
#mynetworks_style = subnet
270
#mynetworks_style = host
271
 
272
# Alternatively, you can specify the mynetworks list by hand, in
273
# which case Postfix ignores the mynetworks_style setting.
274
#
275
# Specify an explicit list of network/netmask patterns, where the
276
# mask specifies the number of bits in the network part of a host
277
# address.
278
#
279
# You can also specify the absolute pathname of a pattern file instead
280
# of listing the patterns here. Specify type:table for table-based lookups
281
# (the value on the table right-hand side is not used).
282
#
283
#mynetworks = 168.100.189.0/28, 127.0.0.0/8
284
#mynetworks = $config_directory/mynetworks
285
#mynetworks = hash:/etc/postfix/network_table
286
 
287
# The relay_domains parameter restricts what destinations this system will
288
# relay mail to.  See the smtpd_recipient_restrictions description in
289
# postconf(5) for detailed information.
290
#
291
# By default, Postfix relays mail
292
# - from "trusted" clients (IP address matches $mynetworks) to any destination,
293
# - from "untrusted" clients to destinations that match $relay_domains or
294
#   subdomains thereof, except addresses with sender-specified routing.
295
# The default relay_domains value is $mydestination.
296
#
297
# In addition to the above, the Postfix SMTP server by default accepts mail
298
# that Postfix is final destination for:
299
# - destinations that match $inet_interfaces or $proxy_interfaces,
300
# - destinations that match $mydestination
301
# - destinations that match $virtual_alias_domains,
302
# - destinations that match $virtual_mailbox_domains.
303
# These destinations do not need to be listed in $relay_domains.
304
#
305
# Specify a list of hosts or domains, /file/name patterns or type:name
306
# lookup tables, separated by commas and/or whitespace.  Continue
307
# long lines by starting the next line with whitespace. A file name
308
# is replaced by its contents; a type:name table is matched when a
309
# (parent) domain appears as lookup key.
310
#
311
# NOTE: Postfix will not automatically forward mail for domains that
312
# list this system as their primary or backup MX host. See the
313
# permit_mx_backup restriction description in postconf(5).
314
#
315
#relay_domains = $mydestination
316
 
317
# INTERNET OR INTRANET
318
 
319
# The relayhost parameter specifies the default host to send mail to
320
# when no entry is matched in the optional transport(5) table. When
321
# no relayhost is given, mail is routed directly to the destination.
322
#
323
# On an intranet, specify the organizational domain name. If your
324
# internal DNS uses no MX records, specify the name of the intranet
325
# gateway host instead.
326
#
327
# In the case of SMTP, specify a domain, host, host:port, [host]:port,
328
# [address] or [address]:port; the form [host] turns off MX lookups.
329
#
330
# If you're connected via UUCP, see also the default_transport parameter.
331
#
332
#relayhost = $mydomain
333
#relayhost = [gateway.my.domain]
334
#relayhost = [mailserver.isp.tld]
335
#relayhost = uucphost
336
#relayhost = [an.ip.add.ress]
337
 
338
# REJECTING UNKNOWN RELAY USERS
339
#
340
# The relay_recipient_maps parameter specifies optional lookup tables
341
# with all addresses in the domains that match $relay_domains.
342
#
343
# If this parameter is defined, then the SMTP server will reject
344
# mail for unknown relay users. This feature is off by default.
345
#
346
# The right-hand side of the lookup tables is conveniently ignored.
347
# In the left-hand side, specify an @domain.tld wild-card, or specify
348
# a user@domain.tld address.
349
#
350
#relay_recipient_maps = hash:/etc/postfix/relay_recipients
351
 
352
# INPUT RATE CONTROL
353
#
354
# The in_flow_delay configuration parameter implements mail input
355
# flow control. This feature is turned on by default, although it
356
# still needs further development (it's disabled on SCO UNIX due
357
# to an SCO bug).
358
#
359
# A Postfix process will pause for $in_flow_delay seconds before
360
# accepting a new message, when the message arrival rate exceeds the
361
# message delivery rate. With the default 100 SMTP server process
362
# limit, this limits the mail inflow to 100 messages a second more
363
# than the number of messages delivered per second.
364
#
365
# Specify 0 to disable the feature. Valid delays are 0..10.
366
#
367
#in_flow_delay = 1s
368
 
369
# ADDRESS REWRITING
370
#
371
# The ADDRESS_REWRITING_README document gives information about
372
# address masquerading or other forms of address rewriting including
373
# username->Firstname.Lastname mapping.
374
 
375
# ADDRESS REDIRECTION (VIRTUAL DOMAIN)
376
#
377
# The VIRTUAL_README document gives information about the many forms
378
# of domain hosting that Postfix supports.
379
 
380
# "USER HAS MOVED" BOUNCE MESSAGES
381
#
382
# See the discussion in the ADDRESS_REWRITING_README document.
383
 
384
# TRANSPORT MAP
385
#
386
# See the discussion in the ADDRESS_REWRITING_README document.
387
 
388
# ALIAS DATABASE
389
#
390
# The alias_maps parameter specifies the list of alias databases used
391
# by the local delivery agent. The default list is system dependent.
392
#
393
# On systems with NIS, the default is to search the local alias
394
# database, then the NIS alias database. See aliases(5) for syntax
395
# details.
396
#
397
# If you change the alias database, run "postalias /etc/aliases" (or
398
# wherever your system stores the mail alias file), or simply run
399
# "newaliases" to build the necessary DBM or DB file.
400
#
401
# It will take a minute or so before changes become visible.  Use
402
# "postfix reload" to eliminate the delay.
403
#
404
#alias_maps = dbm:/etc/aliases
405
alias_maps = hash:/etc/aliases
406
#alias_maps = hash:/etc/aliases, nis:mail.aliases
407
#alias_maps = netinfo:/aliases
408
 
409
# The alias_database parameter specifies the alias database(s) that
410
# are built with "newaliases" or "sendmail -bi".  This is a separate
411
# configuration parameter, because alias_maps (see above) may specify
412
# tables that are not necessarily all under control by Postfix.
413
#
414
#alias_database = dbm:/etc/aliases
415
#alias_database = dbm:/etc/mail/aliases
416
alias_database = hash:/etc/aliases
417
#alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases
418
 
419
# ADDRESS EXTENSIONS (e.g., user+foo)
420
#
421
# The recipient_delimiter parameter specifies the separator between
422
# user names and address extensions (user+foo). See canonical(5),
423
# local(8), relocated(5) and virtual(5) for the effects this has on
424
# aliases, canonical, virtual, relocated and .forward file lookups.
425
# Basically, the software tries user+foo and .forward+foo before
426
# trying user and .forward.
427
#
428
#recipient_delimiter = +
429
 
430
# DELIVERY TO MAILBOX
431
#
432
# The home_mailbox parameter specifies the optional pathname of a
433
# mailbox file relative to a user's home directory. The default
434
# mailbox file is /var/spool/mail/user or /var/mail/user.  Specify
435
# "Maildir/" for qmail-style delivery (the / is required).
436
#
437
#home_mailbox = Mailbox
438
#home_mailbox = Maildir/
439
 
440
# The mail_spool_directory parameter specifies the directory where
441
# UNIX-style mailboxes are kept. The default setting depends on the
442
# system type.
443
#
444
#mail_spool_directory = /var/mail
445
#mail_spool_directory = /var/spool/mail
446
 
447
# The mailbox_command parameter specifies the optional external
448
# command to use instead of mailbox delivery. The command is run as
449
# the recipient with proper HOME, SHELL and LOGNAME environment settings.
450
# Exception:  delivery for root is done as $default_user.
451
#
452
# Other environment variables of interest: USER (recipient username),
453
# EXTENSION (address extension), DOMAIN (domain part of address),
454
# and LOCAL (the address localpart).
455
#
456
# Unlike other Postfix configuration parameters, the mailbox_command
457
# parameter is not subjected to $parameter substitutions. This is to
458
# make it easier to specify shell syntax (see example below).
459
#
460
# Avoid shell meta characters because they will force Postfix to run
461
# an expensive shell process. Procmail alone is expensive enough.
462
#
463
# IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN
464
# ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER.
465
#
466
#mailbox_command = /some/where/procmail
467
#mailbox_command = /some/where/procmail -a "$EXTENSION"
468
 
469
# The mailbox_transport specifies the optional transport in master.cf
470
# to use after processing aliases and .forward files. This parameter
471
# has precedence over the mailbox_command, fallback_transport and
472
# luser_relay parameters.
473
#
474
# Specify a string of the form transport:nexthop, where transport is
475
# the name of a mail delivery transport defined in master.cf.  The
476
# :nexthop part is optional. For more details see the sample transport
477
# configuration file.
478
#
479
# NOTE: if you use this feature for accounts not in the UNIX password
480
# file, then you must update the "local_recipient_maps" setting in
481
# the main.cf file, otherwise the SMTP server will reject mail for
482
# non-UNIX accounts with "User unknown in local recipient table".
483
#
484
# Cyrus IMAP over LMTP. Specify ``lmtpunix      cmd="lmtpd"
485
# listen="/var/imap/socket/lmtp" prefork=0'' in cyrus.conf.
486
#mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
487
 
488
# If using the cyrus-imapd IMAP server deliver local mail to the IMAP
489
# server using LMTP (Local Mail Transport Protocol), this is prefered
490
# over the older cyrus deliver program by setting the
491
# mailbox_transport as below:
492
#
493
# mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
494
#
495
# The efficiency of LMTP delivery for cyrus-imapd can be enhanced via
496
# these settings.
497
#
498
# local_destination_recipient_limit = 300
499
# local_destination_concurrency_limit = 5
500
#
501
# Of course you should adjust these settings as appropriate for the
502
# capacity of the hardware you are using. The recipient limit setting
503
# can be used to take advantage of the single instance message store
504
# capability of Cyrus. The concurrency limit can be used to control
505
# how many simultaneous LMTP sessions will be permitted to the Cyrus
506
# message store.
507
#
508
# Cyrus IMAP via command line. Uncomment the "cyrus...pipe" and
509
# subsequent line in master.cf.
510
#mailbox_transport = cyrus
511
 
512
# The fallback_transport specifies the optional transport in master.cf
513
# to use for recipients that are not found in the UNIX passwd database.
514
# This parameter has precedence over the luser_relay parameter.
515
#
516
# Specify a string of the form transport:nexthop, where transport is
517
# the name of a mail delivery transport defined in master.cf.  The
518
# :nexthop part is optional. For more details see the sample transport
519
# configuration file.
520
#
521
# NOTE: if you use this feature for accounts not in the UNIX password
522
# file, then you must update the "local_recipient_maps" setting 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
#fallback_transport = lmtp:unix:/var/lib/imap/socket/lmtp
527
#fallback_transport =
528
 
529
# The luser_relay parameter specifies an optional destination address
530
# for unknown recipients.  By default, mail for unknown@$mydestination,
531
# unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned
532
# as undeliverable.
533
#
534
# The following expansions are done on luser_relay: $user (recipient
535
# username), $shell (recipient shell), $home (recipient home directory),
536
# $recipient (full recipient address), $extension (recipient address
537
# extension), $domain (recipient domain), $local (entire recipient
538
# localpart), $recipient_delimiter. Specify ${name?value} or
539
# ${name:value} to expand value only when $name does (does not) exist.
540
#
541
# luser_relay works only for the default Postfix local delivery agent.
542
#
543
# NOTE: if you use this feature for accounts not in the UNIX password
544
# file, then you must specify "local_recipient_maps =" (i.e. empty) in
545
# the main.cf file, otherwise the SMTP server will reject mail for
546
# non-UNIX accounts with "User unknown in local recipient table".
547
#
548
#luser_relay = $user@other.host
549
#luser_relay = $local@other.host
550
#luser_relay = admin+$local
551
 
552
# JUNK MAIL CONTROLS
553
#
554
# The controls listed here are only a very small subset. The file
555
# SMTPD_ACCESS_README provides an overview.
556
 
557
# The header_checks parameter specifies an optional table with patterns
558
# that each logical message header is matched against, including
559
# headers that span multiple physical lines.
560
#
561
# By default, these patterns also apply to MIME headers and to the
562
# headers of attached messages. With older Postfix versions, MIME and
563
# attached message headers were treated as body text.
564
#
565
# For details, see "man header_checks".
566
#
567
#header_checks = regexp:/etc/postfix/header_checks
568
 
569
# FAST ETRN SERVICE
570
#
571
# Postfix maintains per-destination logfiles with information about
572
# deferred mail, so that mail can be flushed quickly with the SMTP
573
# "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld".
574
# See the ETRN_README document for a detailed description.
575
#
576
# The fast_flush_domains parameter controls what destinations are
577
# eligible for this service. By default, they are all domains that
578
# this server is willing to relay mail to.
579
#
580
#fast_flush_domains = $relay_domains
581
 
582
# SHOW SOFTWARE VERSION OR NOT
583
#
584
# The smtpd_banner parameter specifies the text that follows the 220
585
# code in the SMTP server's greeting banner. Some people like to see
586
# the mail version advertised. By default, Postfix shows no version.
587
#
588
# You MUST specify $myhostname at the start of the text. That is an
589
# RFC requirement. Postfix itself does not care.
590
#
591
#smtpd_banner = $myhostname ESMTP $mail_name
592
#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
593
 
594
# PARALLEL DELIVERY TO THE SAME DESTINATION
595
#
596
# How many parallel deliveries to the same user or domain? With local
597
# delivery, it does not make sense to do massively parallel delivery
598
# to the same user, because mailbox updates must happen sequentially,
599
# and expensive pipelines in .forward files can cause disasters when
600
# too many are run at the same time. With SMTP deliveries, 10
601
# simultaneous connections to the same domain could be sufficient to
602
# raise eyebrows.
603
#
604
# Each message delivery transport has its XXX_destination_concurrency_limit
605
# parameter.  The default is $default_destination_concurrency_limit for
606
# most delivery transports. For the local delivery agent the default is 2.
607
 
608
#local_destination_concurrency_limit = 2
609
#default_destination_concurrency_limit = 20
610
 
611
# DEBUGGING CONTROL
612
#
613
# The debug_peer_level parameter specifies the increment in verbose
614
# logging level when an SMTP client or server host name or address
615
# matches a pattern in the debug_peer_list parameter.
616
#
617
debug_peer_level = 2
618
 
619
# The debug_peer_list parameter specifies an optional list of domain
620
# or network patterns, /file/name patterns or type:name tables. When
621
# an SMTP client or server host name or address matches a pattern,
622
# increase the verbose logging level by the amount specified in the
623
# debug_peer_level parameter.
624
#
625
#debug_peer_list = 127.0.0.1
626
#debug_peer_list = some.domain
627
 
628
# The debugger_command specifies the external command that is executed
629
# when a Postfix daemon program is run with the -D option.
630
#
631
# Use "command .. & sleep 5" so that the debugger can attach before
632
# the process marches on. If you use an X-based debugger, be sure to
633
# set up your XAUTHORITY environment variable before starting Postfix.
634
#
635
debugger_command =
636
	 PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
637
	 ddd $daemon_directory/$process_name $process_id & sleep 5
638
 
639
# If you can't use X, use this to capture the call stack when a
640
# daemon crashes. The result is in a file in the configuration
641
# directory, and is named after the process name and the process ID.
642
#
643
# debugger_command =
644
#	PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont;
645
#	echo where) | gdb $daemon_directory/$process_name $process_id 2>&1
646
#	>$config_directory/$process_name.$process_id.log & sleep 5
647
#
648
# Another possibility is to run gdb under a detached screen session.
649
# To attach to the screen session, su root and run "screen -r
650
# <id_string>" where <id_string> uniquely matches one of the detached
651
# sessions (from "screen -list").
652
#
653
# debugger_command =
654
#	PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen
655
#	-dmS $process_name gdb $daemon_directory/$process_name
656
#	$process_id & sleep 1
657
 
658
# INSTALL-TIME CONFIGURATION INFORMATION
659
#
660
# The following parameters are used when installing a new Postfix version.
661
#
662
# sendmail_path: The full pathname of the Postfix sendmail command.
663
# This is the Sendmail-compatible mail posting interface.
664
#
665
sendmail_path =
666
 
667
# newaliases_path: The full pathname of the Postfix newaliases command.
668
# This is the Sendmail-compatible command to build alias databases.
669
#
670
newaliases_path =
671
 
672
# mailq_path: The full pathname of the Postfix mailq command.  This
673
# is the Sendmail-compatible mail queue listing command.
674
#
675
mailq_path =
676
 
677
# setgid_group: The group for mail submission and queue management
678
# commands.  This must be a group name with a numerical group ID that
679
# is not shared with other accounts, not even with the Postfix account.
680
#
681
setgid_group =
682
 
683
# html_directory: The location of the Postfix HTML documentation.
684
#
685
html_directory =
686
 
687
# manpage_directory: The location of the Postfix on-line manual pages.
688
#
689
manpage_directory =
690
 
691
# sample_directory: The location of the Postfix sample configuration files.
692
# This parameter is obsolete as of Postfix 2.1.
693
#
694
sample_directory =
695
 
696
# readme_directory: The location of the Postfix README files.
697
#
698
readme_directory =
699
 
700
# TLS CONFIGURATION
701
#
702
# Basic Postfix TLS configuration by default with self-signed certificate
703
# for inbound SMTP and also opportunistic TLS for outbound SMTP.
704
 
705
# The full pathname of a file with the Postfix SMTP server RSA certificate
706
# in PEM format. Intermediate certificates should be included in general,
707
# the server certificate first, then the issuing CA(s) (bottom-up order).
708
#
709
smtpd_tls_cert_file = /etc/pki/tls/certs/postfix.pem
710
 
711
# The full pathname of a file with the Postfix SMTP server RSA private key
712
# in PEM format. The private key must be accessible without a pass-phrase,
713
# i.e. it must not be encrypted.
714
#
715
smtpd_tls_key_file = /etc/pki/tls/private/postfix.key
716
 
717
# Announce STARTTLS support to remote SMTP clients, but do not require that
718
# clients use TLS encryption (opportunistic TLS inbound).
719
#
720
smtpd_tls_security_level = may
721
 
722
# Directory with PEM format Certification Authority certificates that the
723
# Postfix SMTP client uses to verify a remote SMTP server certificate.
724
#
725
smtp_tls_CApath = /etc/pki/tls/certs
726
 
727
# The full pathname of a file containing CA certificates of root CAs
728
# trusted to sign either remote SMTP server certificates or intermediate CA
729
# certificates.
730
#
731
smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt
732
 
733
# Use TLS if this is supported by the remote SMTP server, otherwise use
734
# plaintext (opportunistic TLS outbound).
735
#
736
smtp_tls_security_level = may