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dovecot.conf
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1 # AUTO GENERATED FILE
2 # Modify template in /etc/alternc/templates/
3 # and launch alternc.install if you want
4 # to modify this file.
5 #
6 ## Dovecot configuration file
7 
8 # If you're in a hurry, see http://wiki.dovecot.org/QuickConfiguration
9 
10 # "dovecot -n" command gives a clean output of the changed settings. Use it
11 # instead of copy&pasting this file when posting to the Dovecot mailing list.
12 
13 # '#' character and everything after it is treated as comments. Extra spaces
14 # and tabs are ignored. If you want to use either of these explicitly, put the
15 # value inside quotes, eg.: key = "# char and trailing whitespace "
16 
17 # Default values are shown for each setting, it's not required to uncomment
18 # those. These are exceptions to this though: No sections (e.g. namespace {})
19 # or plugin settings are added by default, they're listed only as examples.
20 # Paths are also just examples with the real defaults being based on configure
21 # options. The paths listed here are for configure --prefix=/usr
22 # --sysconfdir=/etc --localstatedir=/var --with-ssldir=/etc/ssl
23 
24 # Base directory where to store runtime data.
25 #base_dir = /var/run/dovecot
26 
27 # Protocols we want to be serving: imap imaps pop3 pop3s managesieve
28 # If you only want to use dovecot-auth, you can set this to "none".
29 protocols = imap imaps pop3 pop3s managesieve
30 
31 # A space separated list of IP or host addresses where to listen in for
32 # connections. "*" listens in all IPv4 interfaces. "[::]" listens in all IPv6
33 # interfaces. Use "*, [::]" for listening both IPv4 and IPv6.
34 #
35 # If you want to specify ports for each service, you will need to configure
36 # these settings inside the protocol imap/pop3/managesieve { ... } section,
37 # so you can specify different ports for IMAP/POP3/MANAGESIEVE. For example:
38 # protocol imap {
39 # listen = *:10143
40 # ssl_listen = *:10943
41 # ..
42 # }
43 # protocol pop3 {
44 # listen = *:10100
45 # ..
46 # }
47 # protocol managesieve {
48 # listen = *:12000
49 # ..
50 # }
51 listen = *
52 
53 # Disable LOGIN command and all other plaintext authentications unless
54 # SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
55 # matches the local IP (ie. you're connecting from the same computer), the
56 # connection is considered secure and plaintext authentication is allowed.
57 disable_plaintext_auth = yes
58 
59 # Should all IMAP and POP3 processes be killed when Dovecot master process
60 # shuts down. Setting this to "no" means that Dovecot can be upgraded without
61 # forcing existing client connections to close (although that could also be
62 # a problem if the upgrade is eg. because of a security fix). This however
63 # means that after master process has died, the client processes can't write
64 # to log files anymore.
65 #shutdown_clients = yes
66 
67 ##
68 ## Logging
69 ##
70 
71 # Log file to use for error messages, instead of sending them to syslog.
72 # /dev/stderr can be used to log into stderr.
73 #log_path =
74 
75 # Log file to use for informational and debug messages.
76 # Default is the same as log_path.
77 #info_log_path =
78 
79 # Prefix for each line written to log file. % codes are in strftime(3)
80 # format.
81 #log_timestamp = "%b %d %H:%M:%S "
82 log_timestamp = "%Y-%m-%d %H:%M:%S "
83 
84 # Syslog facility to use if you're logging to syslog. Usually if you don't
85 # want to use "mail", you'll use local0..local7. Also other standard
86 # facilities are supported.
87 #syslog_facility = mail
88 
89 ##
90 ## SSL settings
91 ##
92 
93 # IP or host address where to listen in for SSL connections. Remember to also
94 # add imaps and/or pop3s to protocols setting. Defaults to same as "listen"
95 # setting if not specified.
96 #ssl_listen =
97 
98 # SSL/TLS support: yes, no, required. </usr/share/doc/dovecot-common/wiki/SSL.txt>
99 ssl = required
100 
101 # PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
102 # dropping root privileges, so keep the key file unreadable by anyone but
103 # root.
104 ssl_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
105 #ssl_cert_file = /etc/alternc/apache.pem
106 ssl_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
107 #ssl_key_file = /etc/alternc/apache.pem
108 
109 # If key file is password protected, give the password here. Alternatively
110 # give it when starting dovecot with -p parameter. Since this file is often
111 # world-readable, you may want to place this setting instead to a different
112 # root owned 0600 file by using !include_try <path>.
113 #ssl_key_password =
114 
115 # File containing trusted SSL certificate authorities. Set this only if you
116 # intend to use ssl_verify_client_cert=yes. The CAfile should contain the
117 # CA-certificate(s) followed by the matching CRL(s).
118 #ssl_ca_file =
119 
120 # Request client to send a certificate. If you also want to require it, set
121 # ssl_require_client_cert=yes in auth section.
122 #ssl_verify_client_cert = no
123 
124 # Which field from certificate to use for username. commonName and
125 # x500UniqueIdentifier are the usual choices. You'll also need to set
126 # ssl_username_from_cert=yes.
127 #ssl_cert_username_field = commonName
128 
129 # How often to regenerate the SSL parameters file. Generation is quite CPU
130 # intensive operation. The value is in hours, 0 disables regeneration
131 # entirely.
132 #ssl_parameters_regenerate = 168
133 
134 # SSL ciphers to use
135 #ssl_cipher_list = ALL:!LOW:!SSLv2
136 
137 # Show protocol level SSL errors.
138 #verbose_ssl = no
139 
140 ##
141 ## Login processes
142 ##
143 
144 # </usr/share/doc/dovecot-common/wiki/LoginProcess.txt>
145 
146 # Directory where authentication process places authentication UNIX sockets
147 # which login needs to be able to connect to. The sockets are created when
148 # running as root, so you don't have to worry about permissions. Note that
149 # everything in this directory is deleted when Dovecot is started.
150 #login_dir = /var/run/dovecot/login
151 
152 # chroot login process to the login_dir. Only reason not to do this is if you
153 # wish to run the whole Dovecot without roots. </usr/share/doc/dovecot-common/wiki/Rootless.txt>
154 #login_chroot = yes
155 
156 # User to use for the login process. Create a completely new user for this,
157 # and don't use it anywhere else. The user must also belong to a group where
158 # only it has access, it's used to control access for authentication process.
159 # Note that this user is NOT used to access mails. </usr/share/doc/dovecot-common/wiki/UserIds.txt>
160 #login_user = dovecot
161 
162 # Set max. process size in megabytes. If you don't use
163 # login_process_per_connection you might need to grow this.
164 #login_process_size = 64
165 
166 # Should each login be processed in it's own process (yes), or should one
167 # login process be allowed to process multiple connections (no)? Yes is more
168 # secure, espcially with SSL/TLS enabled. No is faster since there's no need
169 # to create processes all the time.
170 #login_process_per_connection = yes
171 
172 # Number of login processes to keep for listening new connections.
173 #login_processes_count = 3
174 
175 # Maximum number of login processes to create. The listening process count
176 # usually stays at login_processes_count, but when multiple users start logging
177 # in at the same time more extra processes are created. To prevent fork-bombing
178 # we check only once in a second if new processes should be created - if all
179 # of them are used at the time, we double their amount until the limit set by
180 # this setting is reached.
181 #login_max_processes_count = 128
182 
183 # Maximum number of connections allowed per each login process. This setting
184 # is used only if login_process_per_connection=no. Once the limit is reached,
185 # the process notifies master so that it can create a new login process.
186 #login_max_connections = 256
187 
188 # Greeting message for clients.
189 #login_greeting = Dovecot ready.
190 
191 # Space separated list of trusted network ranges. Connections from these
192 # IPs are allowed to override their IP addresses and ports (for logging and
193 # for authentication checks). disable_plaintext_auth is also ignored for
194 # these networks. Typically you'd specify your IMAP proxy servers here.
195 #login_trusted_networks =
196 
197 # Space-separated list of elements we want to log. The elements which have
198 # a non-empty variable value are joined together to form a comma-separated
199 # string.
200 #login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
201 
202 # Login log format. %$ contains login_log_format_elements string, %s contains
203 # the data we want to log.
204 #login_log_format = %$: %s
205 
206 ##
207 ## Mailbox locations and namespaces
208 ##
209 
210 # Location for users' mailboxes. This is the same as the old default_mail_env
211 # setting. The default is empty, which means that Dovecot tries to find the
212 # mailboxes automatically. This won't work if the user doesn't have any mail
213 # yet, so you should explicitly tell Dovecot the full location.
214 #
215 # If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u)
216 # isn't enough. You'll also need to tell Dovecot where the other mailboxes are
217 # kept. This is called the "root mail directory", and it must be the first
218 # path given in the mail_location setting.
219 #
220 # There are a few special variables you can use, eg.:
221 #
222 # %u - username
223 # %n - user part in user@domain, same as %u if there's no domain
224 # %d - domain part in user@domain, empty if there's no domain
225 # %h - home directory
226 #
227 # See </usr/share/doc/dovecot-common/wiki/Variables.txt> for full list.
228 # Some examples:
229 #
230 # mail_location = maildir:~/Maildir
231 # mail_location = mbox:~/mail:INBOX=/var/mail/%u
232 # mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
233 #
234 # </usr/share/doc/dovecot-common/wiki/MailLocation.txt>
235 #
236 mail_location = maildir:~/Maildir
237 
238 # If you need to set multiple mailbox locations or want to change default
239 # namespace settings, you can do it by defining namespace sections.
240 #
241 # You can have private, shared and public namespaces. Private namespaces
242 # are for user's personal mails. Shared namespaces are for accessing other
243 # users' mailboxes that have been shared. Public namespaces are for shared
244 # mailboxes that are managed by sysadmin. If you create any shared or public
245 # namespaces you'll typically want to enable ACL plugin also, otherwise all
246 # users can access all the shared mailboxes, assuming they have permissions
247 # on filesystem level to do so.
248 #
249 # REMEMBER: If you add any namespaces, the default namespace must be added
250 # explicitly, ie. mail_location does nothing unless you have a namespace
251 # without a location setting. Default namespace is simply done by having a
252 # namespace with empty prefix.
253 #namespace private {
254  # Hierarchy separator to use. You should use the same separator for all
255  # namespaces or some clients get confused. '/' is usually a good one.
256  # The default however depends on the underlying mail storage format.
257  # separator = .
258 
259  # Prefix required to access this namespace. This needs to be different for
260  # all namespaces. For example "Public/".
261  # prefix = INBOX.
262 
263  # Physical location of the mailbox. This is in same format as
264  # mail_location, which is also the default for it.
265  #location =
266 
267  # There can be only one INBOX, and this setting defines which namespace
268  # has it.
269  #inbox = yes
270 
271  # If namespace is hidden, it's not advertised to clients via NAMESPACE
272  # extension. You'll most likely also want to set list=no. This is mostly
273  # useful when converting from another server with different namespaces which
274  # you want to deprecate but still keep working. For example you can create
275  # hidden namespaces with prefixes "~/mail/", "~%u/mail/" and "mail/".
276  #hidden = yes
277 
278  # Show the mailboxes under this namespace with LIST command. This makes the
279  # namespace visible for clients that don't support NAMESPACE extension.
280  # "children" value lists child mailboxes, but hides the namespace prefix.
281  #list = yes
282 
283  # Namespace handles its own subscriptions. If set to "no", the parent
284  # namespace handles them (empty prefix should always have this as "yes")
285  #subscriptions = yes
286 #}
287 
288 # Example shared namespace configuration
289 #namespace shared {
290  #separator = /
291 
292  # Mailboxes are visible under "shared/user@domain/"
293  # %%n, %%d and %%u are expanded to the destination user.
294  #prefix = shared/%%u/
295 
296  # Mail location for other users' mailboxes. Note that %variables and ~/
297  # expands to the logged in user's data. %%n, %%d, %%u and %%h expand to the
298  # destination user's data.
299  #location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
300 
301  # Use the default namespace for saving subscriptions.
302  #subscriptions = no
303 
304  # List the shared/ namespace only if there are visible shared mailboxes.
305  #list = children
306 #}
307 
308 # System user and group used to access mails. If you use multiple, userdb
309 # can override these by returning uid or gid fields. You can use either numbers
310 # or names. </usr/share/doc/dovecot-common/wiki/UserIds.txt>
311 #mail_uid =
312 #mail_gid =
313 
314 # Group to enable temporarily for privileged operations. Currently this is
315 # used only with INBOX when either its initial creation or dotlocking fails.
316 # Typically this is set to "mail" to give access to /var/mail.
317 #mail_privileged_group =
318 mail_privileged_group = vmail
319 
320 # Grant access to these supplementary groups for mail processes. Typically
321 # these are used to set up access to shared mailboxes. Note that it may be
322 # dangerous to set these if users can create symlinks (e.g. if "mail" group is
323 # set here, ln -s /var/mail ~/mail/var could allow a user to delete others'
324 # mailboxes, or ln -s /secret/shared/box ~/mail/mybox would allow reading it).
325 #mail_access_groups =
326 
327 # Allow full filesystem access to clients. There's no access checks other than
328 # what the operating system does for the active UID/GID. It works with both
329 # maildir and mboxes, allowing you to prefix mailboxes names with eg. /path/
330 # or ~user/.
331 #mail_full_filesystem_access = no
332 
333 ##
334 ## Mail processes
335 ##
336 
337 # Enable mail process debugging. This can help you figure out why Dovecot
338 # isn't finding your mails.
339 #mail_debug = no
340 
341 # Log prefix for mail processes. See </usr/share/doc/dovecot-common/wiki/Variables.txt>
342 # for list of possible variables you can use.
343 #mail_log_prefix = "%Us(%u): "
344 
345 # Max. number of lines a mail process is allowed to log per second before it's
346 # throttled. 0 means unlimited. Typically there's no need to change this
347 # unless you're using mail_log plugin, which may log a lot. This setting is
348 # ignored while mail_debug=yes to avoid pointless throttling.
349 #mail_log_max_lines_per_sec = 10
350 
351 # Don't use mmap() at all. This is required if you store indexes to shared
352 # filesystems (NFS or clustered filesystem).
353 #mmap_disable = no
354 
355 # Rely on O_EXCL to work when creating dotlock files. NFS supports O_EXCL
356 # since version 3, so this should be safe to use nowadays by default.
357 #dotlock_use_excl = yes
358 
359 # Don't use fsync() or fdatasync() calls. This makes the performance better
360 # at the cost of potential data loss if the server (or the file server)
361 # goes down.
362 #fsync_disable = no
363 
364 # Mail storage exists in NFS. Set this to yes to make Dovecot flush NFS caches
365 # whenever needed. If you're using only a single mail server this isn't needed.
366 #mail_nfs_storage = no
367 # Mail index files also exist in NFS. Setting this to yes requires
368 # mmap_disable=yes and fsync_disable=no.
369 #mail_nfs_index = no
370 
371 # Locking method for index files. Alternatives are fcntl, flock and dotlock.
372 # Dotlocking uses some tricks which may create more disk I/O than other locking
373 # methods. NFS users: flock doesn't work, remember to change mmap_disable.
374 #lock_method = fcntl
375 
376 # Drop all privileges before exec()ing the mail process. This is mostly
377 # meant for debugging, otherwise you don't get core dumps. It could be a small
378 # security risk if you use single UID for multiple users, as the users could
379 # ptrace() each others processes then.
380 #mail_drop_priv_before_exec = no
381 
382 # Show more verbose process titles (in ps). Currently shows user name and
383 # IP address. Useful for seeing who are actually using the IMAP processes
384 # (eg. shared mailboxes or if same uid is used for multiple accounts).
385 #verbose_proctitle = no
386 
387 # Valid UID range for users, defaults to 500 and above. This is mostly
388 # to make sure that users can't log in as daemons or other system users.
389 # Note that denying root logins is hardcoded to dovecot binary and can't
390 # be done even if first_valid_uid is set to 0.
391 first_valid_uid = 2000
392 last_valid_uid = 65000
393 
394 # Valid GID range for users, defaults to non-root/wheel. Users having
395 # non-valid GID as primary group ID aren't allowed to log in. If user
396 # belongs to supplementary groups with non-valid GIDs, those groups are
397 # not set.
398 #first_valid_gid = 1
399 #last_valid_gid = 0
400 
401 # Maximum number of running mail processes. When this limit is reached,
402 # new users aren't allowed to log in.
403 #max_mail_processes = 512
404 
405 # Set max. process size in megabytes. Most of the memory goes to mmap()ing
406 # files, so it shouldn't harm much even if this limit is set pretty high.
407 #mail_process_size = 256
408 
409 # Maximum allowed length for mail keyword name. It's only forced when trying
410 # to create new keywords.
411 #mail_max_keyword_length = 50
412 
413 # ':' separated list of directories under which chrooting is allowed for mail
414 # processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar too).
415 # This setting doesn't affect login_chroot, mail_chroot or auth chroot
416 # settings. If this setting is empty, "/./" in home dirs are ignored.
417 # WARNING: Never add directories here which local users can modify, that
418 # may lead to root exploit. Usually this should be done only if you don't
419 # allow shell access for users. </usr/share/doc/dovecot-common/wiki/Chrooting.txt>
420 #valid_chroot_dirs =
421 
422 # Default chroot directory for mail processes. This can be overridden for
423 # specific users in user database by giving /./ in user's home directory
424 # (eg. /home/./user chroots into /home). Note that usually there is no real
425 # need to do chrooting, Dovecot doesn't allow users to access files outside
426 # their mail directory anyway. If your home directories are prefixed with
427 # the chroot directory, append "/." to mail_chroot. </usr/share/doc/dovecot-common/wiki/Chrooting.txt>
428 #mail_chroot =
429 
430 ##
431 ## Mailbox handling optimizations
432 ##
433 
434 # The minimum number of mails in a mailbox before updates are done to cache
435 # file. This allows optimizing Dovecot's behavior to do less disk writes at
436 # the cost of more disk reads.
437 #mail_cache_min_mail_count = 0
438 
439 # When IDLE command is running, mailbox is checked once in a while to see if
440 # there are any new mails or other changes. This setting defines the minimum
441 # time in seconds to wait between those checks. Dovecot can also use dnotify,
442 # inotify and kqueue to find out immediately when changes occur.
443 #mailbox_idle_check_interval = 30
444 
445 # Save mails with CR+LF instead of plain LF. This makes sending those mails
446 # take less CPU, especially with sendfile() syscall with Linux and FreeBSD.
447 # But it also creates a bit more disk I/O which may just make it slower.
448 # Also note that if other software reads the mboxes/maildirs, they may handle
449 # the extra CRs wrong and cause problems.
450 #mail_save_crlf = no
451 
452 ##
453 ## Maildir-specific settings
454 ##
455 
456 # By default LIST command returns all entries in maildir beginning with a dot.
457 # Enabling this option makes Dovecot return only entries which are directories.
458 # This is done by stat()ing each entry, so it causes more disk I/O.
459 # (For systems setting struct dirent->d_type, this check is free and it's
460 # done always regardless of this setting)
461 #maildir_stat_dirs = no
462 
463 # When copying a message, do it with hard links whenever possible. This makes
464 # the performance much better, and it's unlikely to have any side effects.
465 #maildir_copy_with_hardlinks = yes
466 
467 # When copying a message, try to preserve the base filename. Only if the
468 # destination mailbox already contains the same name (ie. the mail is being
469 # copied there twice), a new name is given. The destination filename check is
470 # done only by looking at dovecot-uidlist file, so if something outside
471 # Dovecot does similar filename preserving copies, you may run into problems.
472 # NOTE: This setting requires maildir_copy_with_hardlinks = yes to work.
473 #maildir_copy_preserve_filename = no
474 
475 # Assume Dovecot is the only MUA accessing Maildir: Scan cur/ directory only
476 # when its mtime changes unexpectedly or when we can't find the mail otherwise.
477 #maildir_very_dirty_syncs = no
478 
479 ##
480 ## mbox-specific settings
481 ##
482 
483 # Which locking methods to use for locking mbox. There are four available:
484 # dotlock: Create <mailbox>.lock file. This is the oldest and most NFS-safe
485 # solution. If you want to use /var/mail/ like directory, the users
486 # will need write access to that directory.
487 # dotlock_try: Same as dotlock, but if it fails because of permissions or
488 # because there isn't enough disk space, just skip it.
489 # fcntl : Use this if possible. Works with NFS too if lockd is used.
490 # flock : May not exist in all systems. Doesn't work with NFS.
491 # lockf : May not exist in all systems. Doesn't work with NFS.
492 #
493 # You can use multiple locking methods; if you do the order they're declared
494 # in is important to avoid deadlocks if other MTAs/MUAs are using multiple
495 # locking methods as well. Some operating systems don't allow using some of
496 # them simultaneously.
497 #
498 # The Debian value for mbox_write_locks differs from upstream Dovecot. It is
499 # changed to be compliant with Debian Policy (section 11.6) for NFS safety.
500 # Dovecot: mbox_write_locks = dotlock fcntl
501 # Debian: mbox_write_locks = fcntl dotlock
502 #
503 #mbox_read_locks = fcntl
504 #mbox_write_locks = fcntl dotlock
505 
506 # Maximum time in seconds to wait for lock (all of them) before aborting.
507 #mbox_lock_timeout = 300
508 
509 # If dotlock exists but the mailbox isn't modified in any way, override the
510 # lock file after this many seconds.
511 #mbox_dotlock_change_timeout = 120
512 
513 # When mbox changes unexpectedly we have to fully read it to find out what
514 # changed. If the mbox is large this can take a long time. Since the change
515 # is usually just a newly appended mail, it'd be faster to simply read the
516 # new mails. If this setting is enabled, Dovecot does this but still safely
517 # fallbacks to re-reading the whole mbox file whenever something in mbox isn't
518 # how it's expected to be. The only real downside to this setting is that if
519 # some other MUA changes message flags, Dovecot doesn't notice it immediately.
520 # Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK
521 # commands.
522 #mbox_dirty_syncs = yes
523 
524 # Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE,
525 # EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored.
526 #mbox_very_dirty_syncs = no
527 
528 # Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK
529 # commands and when closing the mailbox). This is especially useful for POP3
530 # where clients often delete all mails. The downside is that our changes
531 # aren't immediately visible to other MUAs.
532 #mbox_lazy_writes = yes
533 
534 # If mbox size is smaller than this (in kilobytes), don't write index files.
535 # If an index file already exists it's still read, just not updated.
536 #mbox_min_index_size = 0
537 
538 ##
539 ## dbox-specific settings
540 ##
541 
542 # Maximum dbox file size in kilobytes until it's rotated.
543 #dbox_rotate_size = 2048
544 
545 # Minimum dbox file size in kilobytes before it's rotated
546 # (overrides dbox_rotate_days)
547 #dbox_rotate_min_size = 16
548 
549 # Maximum dbox file age in days until it's rotated. Day always begins from
550 # midnight, so 1 = today, 2 = yesterday, etc. 0 = check disabled.
551 #dbox_rotate_days = 0
552 
553 ##
554 ## IMAP specific settings
555 ##
556 
557 protocol imap {
558  # Login executable location.
559  #login_executable = /usr/lib/dovecot/imap-login
560 
561  # IMAP executable location. Changing this allows you to execute other
562  # binaries before the imap process is executed.
563  #
564  # This would write rawlogs into user's ~/dovecot.rawlog/, if it exists:
565  # mail_executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap
566  # </usr/doc/dovecot-common/wiki/Debugging.Rawlog.txt>
567  #
568  # This would attach gdb into the imap process and write backtraces into
569  # /tmp/gdbhelper.* files:
570  # mail_executable = /usr/lib/dovecot/gdbhelper /usr/lib/dovecot/imap
571  #
572  mail_executable = /usr/lib/alternc/popimap-log-login.sh /usr/lib/dovecot/imap
573 
574  # Maximum IMAP command line length in bytes. Some clients generate very long
575  # command lines with huge mailboxes, so you may need to raise this if you get
576  # "Too long argument" or "IMAP command line too large" errors often.
577  #imap_max_line_length = 65536
578 
579  # Maximum number of IMAP connections allowed for a user from each IP address.
580  # NOTE: The username is compared case-sensitively.
581  #mail_max_userip_connections = 10
582 
583  # Support for dynamically loadable plugins. mail_plugins is a space separated
584  # list of plugins to load.
585  #mail_plugins =
586  mail_plugins = quota imap_quota
587  #mail_plugin_dir = /usr/lib/dovecot/modules/imap
588 
589  # IMAP logout format string:
590  # %i - total number of bytes read from client
591  # %o - total number of bytes sent to client
592  #imap_logout_format = bytes=%i/%o
593 
594  # Override the IMAP CAPABILITY response.
595  #imap_capability =
596 
597  # How many seconds to wait between "OK Still here" notifications when
598  # client is IDLEing.
599  #imap_idle_notify_interval = 120
600 
601  # ID field names and values to send to clients. Using * as the value makes
602  # Dovecot use the default value. The following fields have default values
603  # currently: name, version, os, os-version, support-url, support-email.
604  #imap_id_send =
605 
606  # ID fields sent by client to log. * means everything.
607  #imap_id_log =
608 
609  # Workarounds for various client bugs:
610  # delay-newmail:
611  # Send EXISTS/RECENT new mail notifications only when replying to NOOP
612  # and CHECK commands. Some clients ignore them otherwise, for example OSX
613  # Mail (<v2.1). Outlook Express breaks more badly though, without this it
614  # may show user "Message no longer in server" errors. Note that OE6 still
615  # breaks even with this workaround if synchronization is set to
616  # "Headers Only".
617  # netscape-eoh:
618  # Netscape 4.x breaks if message headers don't end with the empty "end of
619  # headers" line. Normally all messages have this, but setting this
620  # workaround makes sure that Netscape never breaks by adding the line if
621  # it doesn't exist. This is done only for FETCH BODY[HEADER.FIELDS..]
622  # commands. Note that RFC says this shouldn't be done.
623  # tb-extra-mailbox-sep:
624  # With mbox storage a mailbox can contain either mails or submailboxes,
625  # but not both. Thunderbird separates these two by forcing server to
626  # accept '/' suffix in mailbox names in subscriptions list.
627  # The list is space-separated.
628  #imap_client_workarounds =
629 }
630 
631 ##
632 ## POP3 specific settings
633 ##
634 
635 protocol pop3 {
636  # Login executable location.
637  #login_executable = /usr/lib/dovecot/pop3-login
638 
639  # POP3 executable location. See IMAP's mail_executable above for examples
640  # how this could be changed.
641  mail_executable = /usr/lib/alternc/popimap-log-login.sh /usr/lib/dovecot/pop3
642 
643  # Don't try to set mails non-recent or seen with POP3 sessions. This is
644  # mostly intended to reduce disk I/O. With maildir it doesn't move files
645  # from new/ to cur/, with mbox it doesn't write Status-header.
646  #pop3_no_flag_updates = no
647 
648  # Support LAST command which exists in old POP3 specs, but has been removed
649  # from new ones. Some clients still wish to use this though. Enabling this
650  # makes RSET command clear all \Seen flags from messages.
651  #pop3_enable_last = no
652 
653  # If mail has X-UIDL header, use it as the mail's UIDL.
654  #pop3_reuse_xuidl = no
655 
656  # Keep the mailbox locked for the entire POP3 session.
657  #pop3_lock_session = no
658 
659  # POP3 UIDL (unique mail identifier) format to use. You can use following
660  # variables, along with the variable modifiers described in
661  # </usr/share/doc/dovecot-common/wiki/Variables.txt> (e.g. %Uf for the
662  # filename in uppercase)
663  #
664  # %v - Mailbox's IMAP UIDVALIDITY
665  # %u - Mail's IMAP UID
666  # %m - MD5 sum of the mailbox headers in hex (mbox only)
667  # %f - filename (maildir only)
668  #
669  # If you want UIDL compatibility with other POP3 servers, use:
670  # UW's ipop3d : %08Xv%08Xu
671  # Courier : %f or %v-%u (both might be used simultaneosly)
672  # Cyrus (<= 2.1.3) : %u
673  # Cyrus (>= 2.1.4) : %v.%u
674  # Dovecot v0.99.x : %v.%u
675  # tpop3d : %Mf
676  #
677  # Note that Outlook 2003 seems to have problems with %v.%u format which was
678  # Dovecot's default, so if you're building a new server it would be a good
679  # idea to change this. %08Xu%08Xv should be pretty fail-safe.
680  #
681  pop3_uidl_format = %08Xu%08Xv
682 
683  # Permanently save UIDLs sent to POP3 clients, so pop3_uidl_format changes
684  # won't change those UIDLs. Currently this works only with Maildir.
685  #pop3_save_uidl = no
686 
687  # POP3 logout format string:
688  # %i - total number of bytes read from client
689  # %o - total number of bytes sent to client
690  # %t - number of TOP commands
691  # %p - number of bytes sent to client as a result of TOP command
692  # %r - number of RETR commands
693  # %b - number of bytes sent to client as a result of RETR command
694  # %d - number of deleted messages
695  # %m - number of messages (before deletion)
696  # %s - mailbox size in bytes (before deletion)
697  #pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
698 
699  # Maximum number of POP3 connections allowed for a user from each IP address.
700  # NOTE: The username is compared case-sensitively.
701  #mail_max_userip_connections = 3
702 
703  # Support for dynamically loadable plugins. mail_plugins is a space separated
704  # list of plugins to load.
705  #mail_plugins =
706  mail_plugins = quota
707  #mail_plugin_dir = /usr/lib/dovecot/modules/pop3
708 
709  # Workarounds for various client bugs:
710  # outlook-no-nuls:
711  # Outlook and Outlook Express hang if mails contain NUL characters.
712  # This setting replaces them with 0x80 character.
713  # oe-ns-eoh:
714  # Outlook Express and Netscape Mail breaks if end of headers-line is
715  # missing. This option simply sends it if it's missing.
716  # The list is space-separated.
717  #pop3_client_workarounds =
718 }
719 
720 ##
721 ## ManageSieve specific settings
722 ##
723 
724 protocol managesieve {
725  # Login executable location.
726  #login_executable = /usr/lib/dovecot/managesieve-login
727 
728  # ManageSieve executable location. See IMAP's mail_executable above for
729  # examples how this could be changed.
730  mail_executable = /usr/lib/dovecot/managesieve
731 
732  # Maximum ManageSieve command line length in bytes. This setting is
733  # directly borrowed from IMAP. But, since long command lines are very
734  # unlikely with ManageSieve, changing this will not be very useful.
735  #managesieve_max_line_length = 65536
736 
737  # ManageSieve logout format string:
738  # %i - total number of bytes read from client
739  # %o - total number of bytes sent to client
740  #managesieve_logout_format = bytes=%i/%o
741 
742  # If, for some inobvious reason, the sieve_storage remains unset, the
743  # ManageSieve daemon uses the specification of the mail_location to find out
744  # where to store the sieve files (see explaination in README.managesieve).
745  # The example below, when uncommented, overrides any global mail_location
746  # specification and stores all the scripts in '~/mail/sieve' if sieve_storage
747  # is unset. However, you should always use the sieve_storage setting.
748  # mail_location = mbox:~/mail
749 
750  # To fool ManageSieve clients that are focused on timesieved you can
751  # specify the IMPLEMENTATION capability that the dovecot reports to clients
752  # (default: "dovecot").
753  #managesieve_implementation_string = Cyrus timsieved v2.2.13
754 }
755 
756 ##
757 ## LDA specific settings
758 ##
759 
760 protocol lda {
761  # Address to use when sending rejection mails (e.g. postmaster@example.com).
762  postmaster_address = postmaster@localhost
763 
764  # Hostname to use in various parts of sent mails, eg. in Message-Id.
765  # Default is the system's real hostname.
766  #hostname =
767 
768  # Support for dynamically loadable plugins. mail_plugins is a space separated
769  # list of plugins to load.
770  mail_plugins = quota sieve
771  #mail_plugin_dir = /usr/lib/dovecot/modules/lda
772 
773  # If user is over quota, return with temporary failure instead of
774  # bouncing the mail.
775  #quota_full_tempfail = no
776 
777  # Format to use for logging mail deliveries. You can use variables:
778  # %$ - Delivery status message (e.g. "saved to INBOX")
779  # %m - Message-ID
780  # %s - Subject
781  # %f - From address
782  #deliver_log_format = msgid=%m: %$
783 
784  # Binary to use for sending mails.
785  #sendmail_path = /usr/sbin/sendmail
786 
787  # Subject: header to use for rejection mails. You can use the same variables
788  # as for rejection_reason below.
789  #rejection_subject = Rejected: %s
790 
791  # Human readable error message for rejection mails. You can use variables:
792  # %n = CRLF, %r = reason, %s = original subject, %t = recipient
793  #rejection_reason = Your message to <%t> was automatically rejected:%n%r
794 
795  # UNIX socket path to master authentication server to find users.
796  auth_socket_path = /var/run/dovecot/auth-master
797 }
798 
799 ##
800 ## Authentication processes
801 ##
802 
803 # Executable location
804 #auth_executable = /usr/lib/dovecot/dovecot-auth
805 
806 # Set max. process size in megabytes.
807 #auth_process_size = 256
808 
809 # Authentication cache size in kilobytes. 0 means it's disabled.
810 # Note that bsdauth, PAM and vpopmail require cache_key to be set for caching
811 # to be used.
812 #auth_cache_size = 0
813 # Time to live in seconds for cached data. After this many seconds the cached
814 # record is no longer used, *except* if the main database lookup returns
815 # internal failure. We also try to handle password changes automatically: If
816 # user's previous authentication was successful, but this one wasn't, the
817 # cache isn't used. For now this works only with plaintext authentication.
818 #auth_cache_ttl = 3600
819 # TTL for negative hits (user not found, password mismatch).
820 # 0 disables caching them completely.
821 #auth_cache_negative_ttl = 3600
822 
823 # Space separated list of realms for SASL authentication mechanisms that need
824 # them. You can leave it empty if you don't want to support multiple realms.
825 # Many clients simply use the first one listed here, so keep the default realm
826 # first.
827 #auth_realms =
828 
829 # Default realm/domain to use if none was specified. This is used for both
830 # SASL realms and appending @domain to username in plaintext logins.
831 #auth_default_realm =
832 
833 # List of allowed characters in username. If the user-given username contains
834 # a character not listed in here, the login automatically fails. This is just
835 # an extra check to make sure user can't exploit any potential quote escaping
836 # vulnerabilities with SQL/LDAP databases. If you want to allow all characters,
837 # set this value to empty.
838 #auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
839 
840 # Username character translations before it's looked up from databases. The
841 # value contains series of from -> to characters. For example "#@/@" means
842 # that '#' and '/' characters are translated to '@'.
843 #auth_username_translation =
844 
845 # Username formatting before it's looked up from databases. You can use
846 # the standard variables here, eg. %Lu would lowercase the username, %n would
847 # drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
848 # "-AT-". This translation is done after auth_username_translation changes.
849 #auth_username_format =
850 
851 # If you want to allow master users to log in by specifying the master
852 # username within the normal username string (ie. not using SASL mechanism's
853 # support for it), you can specify the separator character here. The format
854 # is then <username><separator><master username>. UW-IMAP uses "*" as the
855 # separator, so that could be a good choice.
856 #auth_master_user_separator =
857 
858 # Username to use for users logging in with ANONYMOUS SASL mechanism
859 #auth_anonymous_username = anonymous
860 
861 # Log unsuccessful authentication attempts and the reasons why they failed.
862 #auth_verbose = no
863 
864 # Even more verbose logging for debugging purposes. Shows for example SQL
865 # queries.
866 #auth_debug = no
867 
868 # In case of password mismatches, log the passwords and used scheme so the
869 # problem can be debugged. Enabling this also enables auth_debug.
870 #auth_debug_passwords = no
871 
872 # Maximum number of dovecot-auth worker processes. They're used to execute
873 # blocking passdb and userdb queries (eg. MySQL and PAM). They're
874 # automatically created and destroyed as needed.
875 #auth_worker_max_count = 30
876 
877 # Host name to use in GSSAPI principal names. The default is to use the
878 # name returned by gethostname(). Use "$ALL" to allow all keytab entries.
879 #auth_gssapi_hostname =
880 
881 # Kerberos keytab to use for the GSSAPI mechanism. Will use the system
882 # default (usually /etc/krb5.keytab) if not specified.
883 #auth_krb5_keytab =
884 
885 # Do NTLM and GSS-SPNEGO authentication using Samba's winbind daemon and
886 # ntlm_auth helper.
887 # </usr/share/doc/dovecot-common/wiki/Authentication.Mechanisms.Winbind.txt>
888 #auth_use_winbind = no
889 
890 # Path for Samba's ntlm_auth helper binary.
891 #auth_winbind_helper_path = /usr/bin/ntlm_auth
892 
893 # Number of seconds to delay before replying to failed authentications.
894 #auth_failure_delay = 2
895 
896 auth default {
897  # Space separated list of wanted authentication mechanisms:
898  # plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey
899  # gss-spnego
900  # NOTE: See also disable_plaintext_auth setting.
901  mechanisms = plain login
902 
903  #
904  # Password database is used to verify user's password (and nothing more).
905  # You can have multiple passdbs and userdbs. This is useful if you want to
906  # allow both system users (/etc/passwd) and virtual users to login without
907  # duplicating the system users into virtual database.
908  #
909  # </usr/share/doc/dovecot-common/wiki/PasswordDatabase.txt>
910  #
911  # By adding master=yes setting inside a passdb you make the passdb a list
912  # of "master users", who can log in as anyone else. Unless you're using PAM,
913  # you probably still want the destination user to be looked up from passdb
914  # that it really exists. This can be done by adding pass=yes setting to the
915  # master passdb. </usr/share/doc/dovecot-common/wiki/Authentication.MasterUsers.txt>
916 
917  # Users can be temporarily disabled by adding a passdb with deny=yes.
918  # If the user is found from that database, authentication will fail.
919  # The deny passdb should always be specified before others, so it gets
920  # checked first. Here's an example:
921 
922  #passdb passwd-file {
923  # File contains a list of usernames, one per line
924  #args = /etc/dovecot/dovecot.deny
925  #deny = yes
926  #}
927 
928  # PAM authentication. Preferred nowadays by most systems.
929  # Note that PAM can only be used to verify if user's password is correct,
930  # so it can't be used as userdb. If you don't want to use a separate user
931  # database (passwd usually), you can use static userdb.
932  # REMEMBER: You'll need /etc/pam.d/dovecot file created for PAM
933  # authentication to actually work. </usr/share/doc/dovecot-common/wiki/PasswordDatabase.PAM.txt>
934  #passdb pam {
935  # [session=yes] [setcred=yes] [failure_show_msg=yes] [max_requests=<n>]
936  # [cache_key=<key>] [<service name>]
937  #
938  # session=yes makes Dovecot open and immediately close PAM session. Some
939  # PAM plugins need this to work, such as pam_mkhomedir.
940  #
941  # setcred=yes makes Dovecot establish PAM credentials if some PAM plugins
942  # need that. They aren't ever deleted though, so this isn't enabled by
943  # default.
944  #
945  # max_requests specifies how many PAM lookups to do in one process before
946  # recreating the process. The default is 100, because many PAM plugins
947  # leak memory.
948  #
949  # cache_key can be used to enable authentication caching for PAM
950  # (auth_cache_size also needs to be set). It isn't enabled by default
951  # because PAM modules can do all kinds of checks besides checking password,
952  # such as checking IP address. Dovecot can't know about these checks
953  # without some help. cache_key is simply a list of variables (see
954  # /usr/share/doc/dovecot-common/wiki/Variables.txt) which must match
955  # for the cached data to be used.
956  # Here are some examples:
957  # %u - Username must match. Probably sufficient for most uses.
958  # %u%r - Username and remote IP address must match.
959  # %u%s - Username and service (ie. IMAP, POP3) must match.
960  #
961  # The service name can contain variables, for example %Ls expands to
962  # pop3 or imap.
963  #
964  # Some examples:
965  # args = session=yes %Ls
966  # args = cache_key=%u dovecot
967  #args = dovecot
968  #}
969 
970  # System users (NSS, /etc/passwd, or similiar)
971  # In many systems nowadays this uses Name Service Switch, which is
972  # configured in /etc/nsswitch.conf. </usr/share/doc/dovecot-common/wiki/AuthDatabase.Passwd.txt>
973  #passdb passwd {
974  # [blocking=yes] - See userdb passwd for explanation
975  #args =
976  #}
977 
978  # Shadow passwords for system users (NSS, /etc/shadow or similiar).
979  # Deprecated by PAM nowadays.
980  # </usr/share/doc/dovecot-common/wiki/PasswordDatabase.Shadow.txt>
981  #passdb shadow {
982  # [blocking=yes] - See userdb passwd for explanation
983  #args =
984  #}
985 
986  # PAM-like authentication for OpenBSD.
987  # </usr/share/doc/dovecot-common/wiki/PasswordDatabase.BSDAuth.txt>
988  #passdb bsdauth {
989  # [cache_key=<key>] - See cache_key in PAM for explanation.
990  #args =
991  #}
992 
993  # passwd-like file with specified location
994  # </usr/share/doc/dovecot-common/wiki/AuthDatabase.PasswdFile.txt>
995  #passdb passwd-file {
996  # [scheme=<default password scheme>] [username_format=<format>]
997  # <Path for passwd-file>
998  #args =
999  #}
1000 
1001  # checkpassword executable authentication
1002  # NOTE: You will probably want to use "userdb prefetch" with this.
1003  # </usr/share/doc/dovecot-common/wiki/AuthDatabase.CheckPassword.txt>
1004  #passdb checkpassword {
1005  # Path for checkpassword binary
1006  #args =
1007  #}
1008 
1009  # SQL database </usr/share/doc/dovecot-common/wiki/AuthDatabase.SQL.txt>
1010  passdb sql {
1011  # Path for SQL configuration file
1012  args = /etc/dovecot/dovecot-sql.conf
1013  }
1014 
1015  # LDAP database </usr/share/doc/dovecot-common/wiki/AuthDatabase.LDAP.txt>
1016  #passdb ldap {
1017  # Path for LDAP configuration file
1018  #args = /etc/dovecot/dovecot-ldap.conf
1019  #}
1020 
1021  # vpopmail authentication </usr/share/doc/dovecot-common/wiki/AuthDatabase.VPopMail.txt>
1022  #passdb vpopmail {
1023  # [cache_key=<key>] - See cache_key in PAM for explanation.
1024  # [quota_template=<template>] - %q expands to Maildir++ quota
1025  # (eg. quota_template=quota_rule=*:backend=%q)
1026  #args =
1027  #}
1028 
1029  #
1030  # User database specifies where mails are located and what user/group IDs
1031  # own them. For single-UID configuration use "static".
1032  #
1033  # </usr/share/doc/dovecot-common/wiki/UserDatabase.txt>
1034  #
1035 
1036  # "prefetch" user database means that the passdb already provided the
1037  # needed information and there's no need to do a separate userdb lookup.
1038  # This can be made to work with SQL and LDAP databases, see their example
1039  # configuration files for more information how to do it.
1040  # </usr/share/doc/dovecot-common/wiki/UserDatabase.Prefetch.txt>
1041  userdb prefetch {
1042  }
1043 
1044  # System users (NSS, /etc/passwd, or similiar). In many systems nowadays this
1045  # uses Name Service Switch, which is configured in /etc/nsswitch.conf.
1046  # </usr/share/doc/dovecot-common/wiki/AuthDatabase.Passwd.txt>
1047  #userdb passwd {
1048  # [blocking=yes] - By default the lookups are done in the main dovecot-auth
1049  # process. This setting causes the lookups to be done in auth worker
1050  # proceses. Useful with remote NSS lookups that may block.
1051  # NOTE: Be sure to use this setting with nss_ldap or users might get
1052  # logged in as each others!
1053  #args =
1054  #}
1055 
1056  # passwd-like file with specified location
1057  # </usr/share/doc/dovecot-common/wiki/AuthDatabase.PasswdFile.txt>
1058  #userdb passwd-file {
1059  # [username_format=<format>] <Path for passwd-file>
1060  #args =
1061  #}
1062 
1063  # checkpassword executable user database lookup
1064  # </usr/share/doc/dovecot-common/wiki/AuthDatabase.CheckPassword.txt>
1065  #userdb checkpassword {
1066  # Path for checkpassword binary
1067  #args =
1068  #}
1069 
1070  # static settings generated from template </usr/share/doc/dovecot-common/wiki/UserDatabase.Static.txt>
1071  #userdb static {
1072  # Template for the fields. Can return anything a userdb could normally
1073  # return. For example:
1074  #
1075  # args = uid=500 gid=500 home=/var/mail/%u
1076  #
1077  # If you use deliver, it needs to look up users only from the userdb. This
1078  # of course doesn't work with static because there is no list of users.
1079  # Normally static userdb handles this by doing a passdb lookup. This works
1080  # with most passdbs, with PAM being the most notable exception. If you do
1081  # the user verification another way, you can add allow_all_users=yes to
1082  # the args in which case the passdb lookup is skipped.
1083  #
1084  #args =
1085  #}
1086 
1087  # SQL database </usr/share/doc/dovecot-common/wiki/AuthDatabase.SQL.txt>
1088  userdb sql {
1089  # Path for SQL configuration file
1090  args = /etc/dovecot/dovecot-sql.conf
1091  }
1092 
1093  # LDAP database </usr/share/doc/dovecot-common/wiki/AuthDatabase.LDAP.txt>
1094  #userdb ldap {
1095  # Path for LDAP configuration file
1096  #args = /etc/dovecot/dovecot-ldap.conf
1097  #}
1098 
1099  # vpopmail </usr/share/doc/dovecot-common/wiki/AuthDatabase.VPopMail.txt>
1100  #userdb vpopmail {
1101  #}
1102 
1103  # User to use for the process. This user needs access to only user and
1104  # password databases, nothing else. Only shadow and pam authentication
1105  # requires roots, so use something else if possible. Note that passwd
1106  # authentication with BSDs internally accesses shadow files, which also
1107  # requires roots. Note that this user is NOT used to access mails.
1108  # That user is specified by userdb above.
1109  user = vmail
1110 
1111  # Directory where to chroot the process. Most authentication backends don't
1112  # work if this is set, and there's no point chrooting if auth_user is root.
1113  # Note that valid_chroot_dirs isn't needed to use this setting.
1114  #chroot =
1115 
1116  # Number of authentication processes to create
1117  #count = 1
1118 
1119  # Require a valid SSL client certificate or the authentication fails.
1120  #ssl_require_client_cert = no
1121 
1122  # Take the username from client's SSL certificate, using
1123  # X509_NAME_get_text_by_NID() which returns the subject's DN's
1124  # CommonName.
1125  #ssl_username_from_cert = no
1126 
1127  # It's possible to export the authentication interface to other programs:
1128  socket listen {
1129  master {
1130  # Master socket provides access to userdb information. It's typically
1131  # used to give Dovecot's local delivery agent access to userdb so it
1132  # can find mailbox locations.
1133  path = /var/run/dovecot/auth-master
1134  mode = 0600
1135  # Default user/group is the one who started dovecot-auth (root)
1136  user = vmail
1137  #group =
1138  }
1139  client {
1140  # The client socket is generally safe to export to everyone. Typical use
1141  # is to export it to your SMTP server so it can do SMTP AUTH lookups
1142  # using it.
1143  path = /var/spool/postfix/private/auth
1144  mode = 0660
1145  user = postfix
1146  group = postfix
1147  }
1148  }
1149 }
1150 
1151 # If you wish to use another authentication server than dovecot-auth, you can
1152 # use connect sockets. They are assumed to be already running, Dovecot's master
1153 # process only tries to connect to them. They don't need any other settings
1154 # than the path for the master socket, as the configuration is done elsewhere.
1155 # Note that the client sockets must exist in the login_dir.
1156 #auth external {
1157 # socket connect {
1158 # master {
1159 # path = /var/run/dovecot/auth-master
1160 # }
1161 # }
1162 #}
1163 
1164 ##
1165 ## Dictionary server settings
1166 ##
1167 
1168 # Dictionary can be used by some plugins to store key=value lists, such as
1169 # quota, expire and acl plugins. The dictionary can be used either directly or
1170 # though a dictionary server. The following dict block maps dictionary names to
1171 # URIs when the server is used. These can then be referenced using URIs in
1172 # format "proxy::<name>".
1173 
1174 dict {
1175  quotadict = mysql:/etc/dovecot/dovecot-dict-quota.conf
1176  #expire = db:/var/lib/dovecot/expire.db
1177 }
1178 
1179 # Path to Berkeley DB's configuration file. See doc/dovecot-db-example.conf
1180 #dict_db_config =
1181 
1182 ##
1183 ## Plugin settings
1184 ##
1185 
1186 plugin {
1187  # Here you can give some extra environment variables to mail processes.
1188  # This is mostly meant for passing parameters to plugins. %variable
1189  # expansion is done for all values.
1190 
1191  # Quota plugin. Multiple backends are supported:
1192  # dirsize: Find and sum all the files found from mail directory.
1193  # Extremely SLOW with Maildir. It'll eat your CPU and disk I/O.
1194  # dict: Keep quota stored in dictionary (eg. SQL)
1195  # maildir: Maildir++ quota
1196  # fs: Read-only support for filesystem quota
1197  #
1198  # Quota limits are set using "quota_rule" parameters, either in here or in
1199  # userdb. It's also possible to give mailbox-specific limits, for example:
1200  # quota_rule = *:storage=1048576
1201  quota_rule = *:storage=100M
1202  quota_rule2 = Trash:storage=10%%
1203  # quota_rule2 = Trash:storage=102400
1204  # User has now 1GB quota, but when saving to Trash mailbox the user gets
1205  # additional 100MB.
1206  #
1207  # Multiple quota roots are also possible, for example:
1208  # quota = dict:user::proxy::quota
1209  # quota2 = dict:domain:%d:proxy::quota_domain
1210  # quota_rule = *:storage=102400
1211  # quota2_rule = *:storage=1048576
1212  # Gives each user their own 100MB quota and one shared 1GB quota within
1213  # the domain.
1214  #
1215  # You can execute a given command when user exceeds a specified quota limit.
1216  # Each quota root has separate limits. Only the command for the first
1217  # exceeded limit is excecuted, so put the highest limit first.
1218  # Note that % needs to be escaped as %%, otherwise "% " expands to empty.
1219  # quota_warning = storage=95%% /usr/local/bin/quota-warning.sh 95
1220  # quota_warning2 = storage=80%% /usr/local/bin/quota-warning.sh 80
1221  quota_warning = storage=95%% /usr/lib/alternc/quota-warning.sh 95
1222  quota_warning2 = storage=80%% /usr/lib/alternc/quota-warning.sh 80
1223  #quota = maildir
1224  quota = dict:user::proxy::quotadict
1225 
1226  # ACL plugin. vfile backend reads ACLs from "dovecot-acl" file from maildir
1227  # directory. You can also optionally give a global ACL directory path where
1228  # ACLs are applied to all users' mailboxes. The global ACL directory contains
1229  # one file for each mailbox, eg. INBOX or sub.mailbox. cache_secs parameter
1230  # specifies how many seconds to wait between stat()ing dovecot-acl file
1231  # to see if it changed.
1232  #acl = vfile:/etc/dovecot/dovecot-acls:cache_secs=300
1233 
1234  # To let users LIST mailboxes shared by other users, Dovecot needs a
1235  # shared mailbox dictionary. For example:
1236  #acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes
1237 
1238  # Convert plugin. If set, specifies the source storage path which is
1239  # converted to destination storage (mail_location) when the user logs in.
1240  # The existing mail directory is renamed to <dir>-converted.
1241  #convert_mail = mbox:%h/mail
1242  # Skip mailboxes which we can't open successfully instead of aborting.
1243  #convert_skip_broken_mailboxes = no
1244  # Skip directories beginning with '.'
1245  #convert_skip_dotdirs = no
1246  # If source storage has mailbox names with destination storage's hierarchy
1247  # separators, replace them with this character.
1248  #convert_alt_hierarchy_char = _
1249 
1250  # Trash plugin. When saving a message would make user go over quota, this
1251  # plugin automatically deletes the oldest mails from configured mailboxes
1252  # until the message can be saved within quota limits. The configuration file
1253  # is a text file where each line is in format: <priority> <mailbox name>
1254  # Mails are first deleted in lowest -> highest priority number order
1255  #trash = /etc/dovecot/dovecot-trash.conf
1256 
1257  # Expire plugin. Mails are expunged from mailboxes after being there the
1258  # configurable time. The first expiration date for each mailbox is stored in
1259  # a dictionary so it can be quickly determined which mailboxes contain
1260  # expired mails. The actual expunging is done in a nightly cronjob, which
1261  # you must set up:
1262  # dovecot --exec-mail ext /usr/lib/dovecot/expire-tool.sh
1263  #expire = Trash 7 Spam 30
1264  #expire_dict = proxy::expire
1265 
1266  # Lazy expunge plugin. Currently works only with maildirs. When a user
1267  # expunges mails, the mails are moved to a mailbox in another namespace
1268  # (1st). When a mailbox is deleted, the mailbox is moved to another namespace
1269  # (2nd) as well. Also if the deleted mailbox had any expunged messages,
1270  # they're moved to a 3rd namespace. The mails won't be counted in quota,
1271  # and they're not deleted automatically (use a cronjob or something).
1272  #lazy_expunge = .EXPUNGED/ .DELETED/ .DELETED/.EXPUNGED/
1273 
1274  # Events to log. Also available: flag_change append
1275  #mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
1276  # Group events within a transaction to one line.
1277  #mail_log_group_events = no
1278  # Available fields: uid, box, msgid, from, subject, size, vsize, flags
1279  # size and vsize are available only for expunge and copy events.
1280  #mail_log_fields = uid box msgid size
1281 
1282  # Sieve plugin (http://wiki.dovecot.org/LDA/Sieve) and ManageSieve service
1283  #
1284  # Location of the active script. When ManageSieve is used this is actually
1285  # a symlink pointing to the active script in the sieve storage directory.
1286  sieve=~/.dovecot.sieve
1287  #
1288  # The path to the directory where the personal Sieve scripts are stored. For
1289  # ManageSieve this is where the uploaded scripts are stored.
1290  sieve_dir=~/sieve
1291 }
1292 
1293 # Config files can also be included. deliver doesn't support them currently.
1294 #!include /etc/dovecot/conf.d/*.conf
1295 # Optional configurations, don't give an error if it's not found:
1296 #!include_try /etc/dovecot/extra.conf