## Dovecot configuration file
|
|
# If you're in a hurry, see http://wiki.dovecot.org/QuickConfiguration
|
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# "dovecot -n" command gives a clean output of the changed settings. Use it
|
# instead of copy&pasting this file when posting to the Dovecot mailing list.
|
|
# '#' character and everything after it is treated as comments. Extra spaces
|
# and tabs are ignored. If you want to use either of these explicitly, put the
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# value inside quotes, eg.: key = "# char and trailing whitespace "
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# Default values are shown for each setting, it's not required to uncomment
|
# any of the lines. Exception to this are paths, they're just examples with
|
# the real defaults being based on configure options. The paths listed here
|
# are for configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
|
# --with-ssldir=/etc/ssl
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|
# Base directory where to store runtime data.
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#base_dir = /var/run/dovecot/
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|
# Protocols we want to be serving: imap imaps pop3 pop3s managesieve
|
# If you only want to use dovecot-auth, you can set this to "none".
|
#protocols = imap imaps
|
protocols = imap imaps pop3 pop3s
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|
# IP or host address where to listen in for connections. It's not currently
|
# possible to specify multiple addresses. "*" listens in all IPv4 interfaces.
|
# "[::]" listens in all IPv6 interfaces, but may also listen in all IPv4
|
# interfaces depending on the operating system.
|
#
|
# If you want to specify ports for each service, you will need to configure
|
# these settings inside the protocol imap/pop3/managesieve { ... } section,
|
# so you can specify different ports for IMAP/POP3/MANAGESIEVE. For example:
|
# protocol imap {
|
# listen = *:10143
|
# ssl_listen = *:10943
|
# ..
|
# }
|
# protocol pop3 {
|
# listen = *:10100
|
# ..
|
# }
|
# protocol managesieve {
|
# listen = *:12000
|
# ..
|
# }
|
#listen = *
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listen = *,[::]
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# Disable LOGIN command and all other plaintext authentications unless
|
# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
|
# matches the local IP (ie. you're connecting from the same computer), the
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# connection is considered secure and plaintext authentication is allowed.
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disable_plaintext_auth = no
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|
# Should all IMAP and POP3 processes be killed when Dovecot master process
|
# shuts down. Setting this to "no" means that Dovecot can be upgraded without
|
# forcing existing client connections to close (although that could also be
|
# a problem if the upgrade is eg. because of a security fix). This however
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# means that after master process has died, the client processes can't write
|
# to log files anymore.
|
#shutdown_clients = yes
|
|
##
|
## Logging
|
##
|
|
# Log file to use for error messages, instead of sending them to syslog.
|
# /dev/stderr can be used to log into stderr.
|
#log_path =
|
|
# Log file to use for informational and debug messages.
|
# Default is the same as log_path.
|
#info_log_path =
|
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# Prefix for each line written to log file. % codes are in strftime(3)
|
# format.
|
#log_timestamp = "%b %d %H:%M:%S "
|
log_timestamp = "%Y-%m-%d %H:%M:%S "
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# Syslog facility to use if you're logging to syslog. Usually if you don't
|
# want to use "mail", you'll use local0..local7. Also other standard
|
# facilities are supported.
|
#syslog_facility = mail
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|
##
|
## SSL settings
|
##
|
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# IP or host address where to listen in for SSL connections. Defaults
|
# to above if not specified.
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#ssl_listen =
|
|
# Disable SSL/TLS support.
|
#ssl_disable = no
|
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# PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
|
# dropping root privileges, so keep the key file unreadable by anyone but
|
# root.
|
#ssl_cert_file = /etc/ssl/certs/dovecot.pem
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#ssl_key_file = /etc/ssl/private/dovecot.pem
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|
ssl_cert_file = /etc/postfix/smtpd.cert
|
ssl_key_file = /etc/postfix/smtpd.key
|
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# If key file is password protected, give the password here. Alternatively
|
# give it when starting dovecot with -p parameter.
|
#ssl_key_password =
|
|
# File containing trusted SSL certificate authorities. Set this only if you
|
# intend to use ssl_verify_client_cert=yes. The CAfile should contain the
|
# CA-certificate(s) followed by the matching CRL(s).
|
#ssl_ca_file =
|
|
# Request client to send a certificate. If you also want to require it, set
|
# ssl_require_client_cert=yes in auth section.
|
#ssl_verify_client_cert = no
|
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# How often to regenerate the SSL parameters file. Generation is quite CPU
|
# intensive operation. The value is in hours, 0 disables regeneration
|
# entirely.
|
#ssl_parameters_regenerate = 168
|
|
# SSL ciphers to use
|
#ssl_cipher_list = ALL:!LOW
|
|
# Show protocol level SSL errors.
|
#verbose_ssl = no
|
|
##
|
## Login processes
|
##
|
|
# <doc/wiki/LoginProcess.txt>
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|
# Directory where authentication process places authentication UNIX sockets
|
# which login needs to be able to connect to. The sockets are created when
|
# running as root, so you don't have to worry about permissions. Note that
|
# everything in this directory is deleted when Dovecot is started.
|
#login_dir = /var/run/dovecot/login
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# chroot login process to the login_dir. Only reason not to do this is if you
|
# wish to run the whole Dovecot without roots. <doc/wiki/Rootless.txt>
|
#login_chroot = yes
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# User to use for the login process. Create a completely new user for this,
|
# and don't use it anywhere else. The user must also belong to a group where
|
# only it has access, it's used to control access for authentication process.
|
# Note that this user is NOT used to access mails. <doc/wiki/UserIds.txt>
|
#login_user = dovecot
|
|
# Set max. process size in megabytes. If you don't use
|
# login_process_per_connection you might need to grow this.
|
#login_process_size = 64
|
|
# Should each login be processed in it's own process (yes), or should one
|
# login process be allowed to process multiple connections (no)? Yes is more
|
# secure, espcially with SSL/TLS enabled. No is faster since there's no need
|
# to create processes all the time.
|
#login_process_per_connection = yes
|
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# Number of login processes to keep for listening new connections.
|
#login_processes_count = 3
|
|
# Maximum number of login processes to create. The listening process count
|
# usually stays at login_processes_count, but when multiple users start logging
|
# in at the same time more extra processes are created. To prevent fork-bombing
|
# we check only once in a second if new processes should be created - if all
|
# of them are used at the time, we double their amount until the limit set by
|
# this setting is reached.
|
#login_max_processes_count = 128
|
|
# Maximum number of connections allowed per each login process. This setting
|
# is used only if login_process_per_connection=no. Once the limit is reached,
|
# the process notifies master so that it can create a new login process.
|
# You should make sure that the process has at least
|
# 16 + login_max_connections * 2 available file descriptors.
|
#login_max_connections = 256
|
|
# Greeting message for clients.
|
#login_greeting = Dovecot ready.
|
|
# Space-separated list of elements we want to log. The elements which have
|
# a non-empty variable value are joined together to form a comma-separated
|
# string.
|
#login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
|
|
# Login log format. %$ contains login_log_format_elements string, %s contains
|
# the data we want to log.
|
#login_log_format = %$: %s
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|
##
|
## Mailbox locations and namespaces
|
##
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|
# Location for users' mailboxes. This is the same as the old default_mail_env
|
# setting. The default is empty, which means that Dovecot tries to find the
|
# mailboxes automatically. This won't work if the user doesn't have any mail
|
# yet, so you should explicitly tell Dovecot the full location.
|
#
|
# If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u)
|
# isn't enough. You'll also need to tell Dovecot where the other mailboxes are
|
# kept. This is called the "root mail directory", and it must be the first
|
# path given in the mail_location setting.
|
#
|
# There are a few special variables you can use, eg.:
|
#
|
# %u - username
|
# %n - user part in user@domain, same as %u if there's no domain
|
# %d - domain part in user@domain, empty if there's no domain
|
# %h - home directory
|
#
|
# See /usr/share/doc/dovecot-common/wiki/Variables.txt for full list. Some
|
# examples:
|
#
|
# mail_location = maildir:~/Maildir
|
# mail_location = mbox:~/mail:INBOX=/var/mail/%u
|
# mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
|
#
|
# <doc/wiki/MailLocation.txt>
|
#
|
#mail_location =
|
|
# If you need to set multiple mailbox locations or want to change default
|
# namespace settings, you can do it by defining namespace sections.
|
# NOTE: Namespaces currently work ONLY with IMAP! POP3 and LDA currently ignore
|
# namespaces completely, they use only the mail_location setting.
|
#
|
# You can have private, shared and public namespaces. The only difference
|
# between them is how Dovecot announces them to client via NAMESPACE
|
# extension. Shared namespaces are meant for user-owned mailboxes which are
|
# shared to other users, while public namespaces are for more globally
|
# accessible mailboxes.
|
#
|
# REMEMBER: If you add any namespaces, the default namespace must be added
|
# explicitly, ie. mail_location does nothing unless you have a namespace
|
# without a location setting. Default namespace is simply done by having a
|
# namespace with empty prefix.
|
#namespace private {
|
# Hierarchy separator to use. You should use the same separator for all
|
# namespaces or some clients get confused. '/' is usually a good one.
|
# The default however depends on the underlying mail storage format.
|
#separator =
|
|
# Prefix required to access this namespace. This needs to be different for
|
# all namespaces. For example "Public/".
|
#prefix =
|
|
# Physical location of the mailbox. This is in same format as
|
# mail_location, which is also the default for it.
|
#location =
|
|
# There can be only one INBOX, and this setting defines which namespace
|
# has it.
|
#inbox = yes
|
|
# If namespace is hidden, it's not advertised to clients via NAMESPACE
|
# extension or shown in LIST replies. This is mostly useful when converting
|
# from another server with different namespaces which you want to depricate
|
# but still keep working. For example you can create hidden namespaces with
|
# prefixes "~/mail/", "~%u/mail/" and "mail/".
|
#hidden = yes
|
#}
|
|
# Group to enable temporarily for privileged operations. Currently this is
|
# used only with INBOX when either its initial creation or dotlocking fails.
|
# Typically this is set to "mail" to give access to /var/mail.
|
mail_privileged_group = mail
|
|
# Grant access to these supplementary groups for mail processes. Typically
|
# these are used to set up access to shared mailboxes. Note that it may be
|
# dangerous to set these if users can create symlinks (e.g. if "mail" group is
|
# set here, ln -s /var/mail ~/mail/var could allow a user to delete others'
|
# mailboxes, or ln -s /secret/shared/box ~/mail/mybox would allow reading it).
|
#mail_access_groups =
|
|
# Allow full filesystem access to clients. There's no access checks other than
|
# what the operating system does for the active UID/GID. It works with both
|
# maildir and mboxes, allowing you to prefix mailboxes names with eg. /path/
|
# or ~user/.
|
#mail_full_filesystem_access = no
|
|
##
|
## Mail processes
|
##
|
|
# Enable mail process debugging. This can help you figure out why Dovecot
|
# isn't finding your mails.
|
#mail_debug = no
|
|
# Log prefix for mail processes.
|
# See /usr/share/doc/dovecot-common/wiki/Variables.txt for list of possible
|
# variables you can use.
|
#mail_log_prefix = "%Us(%u): "
|
|
# Max. number of lines a mail process is allowed to log per second before it's
|
# throttled. 0 means unlimited. Typically there's no need to change this
|
# unless you're using mail_log plugin, which may log a lot.
|
#mail_log_max_lines_per_sec = 10
|
|
# Don't use mmap() at all. This is required if you store indexes to shared
|
# filesystems (NFS or clustered filesystem).
|
#mmap_disable = no
|
|
# Don't write() to mmaped files. This is required for some operating systems
|
# which use separate caches for them, such as OpenBSD.
|
#mmap_no_write = no
|
|
# Rely on O_EXCL to work when creating dotlock files. The default is to use
|
# hard linking. O_EXCL makes the dotlocking faster, but it doesn't always
|
# work with NFS.
|
#dotlock_use_excl = no
|
|
# Don't use fsync() or fdatasync() calls. This makes the performance better
|
# at the cost of potential data loss if the server (or the file server)
|
# goes down.
|
#fsync_disable = no
|
|
# Locking method for index files. Alternatives are fcntl, flock and dotlock.
|
# Dotlocking uses some tricks which may create more disk I/O than other locking
|
# methods. NFS users: flock doesn't work, remember to change mmap_disable.
|
#lock_method = fcntl
|
|
# Drop all privileges before exec()ing the mail process. This is mostly
|
# meant for debugging, otherwise you don't get core dumps. It could be a small
|
# security risk if you use single UID for multiple users, as the users could
|
# ptrace() each others processes then.
|
#mail_drop_priv_before_exec = no
|
|
# Show more verbose process titles (in ps). Currently shows user name and
|
# IP address. Useful for seeing who are actually using the IMAP processes
|
# (eg. shared mailboxes or if same uid is used for multiple accounts).
|
#verbose_proctitle = no
|
|
# Valid UID range for users, defaults to 500 and above. This is mostly
|
# to make sure that users can't log in as daemons or other system users.
|
# Note that denying root logins is hardcoded to dovecot binary and can't
|
# be done even if first_valid_uid is set to 0.
|
#first_valid_uid = 500
|
#last_valid_uid = 0
|
|
# Valid GID range for users, defaults to non-root/wheel. Users having
|
# non-valid GID as primary group ID aren't allowed to log in. If user
|
# belongs to supplementary groups with non-valid GIDs, those groups are
|
# not set.
|
#first_valid_gid = 1
|
#last_valid_gid = 0
|
|
# Maximum number of running mail processes. When this limit is reached,
|
# new users aren't allowed to log in.
|
#max_mail_processes = 1024
|
|
# Set max. process size in megabytes. Most of the memory goes to mmap()ing
|
# files, so it shouldn't harm much even if this limit is set pretty high.
|
#mail_process_size = 256
|
|
# Maximum allowed length for mail keyword name. It's only forced when trying
|
# to create new keywords.
|
#mail_max_keyword_length = 50
|
|
# ':' separated list of directories under which chrooting is allowed for mail
|
# processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar too).
|
# This setting doesn't affect login_chroot or auth chroot variables.
|
# WARNING: Never add directories here which local users can modify, that
|
# may lead to root exploit. Usually this should be done only if you don't
|
# allow shell access for users. <doc/wiki/Chrooting.txt>
|
#valid_chroot_dirs =
|
|
# Default chroot directory for mail processes. This can be overridden for
|
# specific users in user database by giving /./ in user's home directory
|
# (eg. /home/./user chroots into /home). Note that usually there is no real
|
# need to do chrooting, Dovecot doesn't allow users to access files outside
|
# their mail directory anyway. <doc/wiki/Chrooting.txt>
|
#mail_chroot =
|
|
##
|
## Mailbox handling optimizations
|
##
|
|
# Space-separated list of fields to initially save into cache file. Currently
|
# these fields are allowed:
|
#
|
# flags, date.sent, date.received, size.virtual, size.physical
|
# mime.parts, imap.body, imap.bodystructure
|
#
|
# Different IMAP clients work in different ways, so they benefit from
|
# different cached fields. Some do not benefit from them at all. Caching more
|
# than necessary generates useless disk I/O, so you don't want to do that
|
# either.
|
#
|
# Dovecot attempts to automatically figure out what client wants and it keeps
|
# only that. However the first few times a mailbox is opened, Dovecot hasn't
|
# yet figured out what client needs, so it may not perform optimally. If you
|
# know what fields the majority of your clients need, it may be useful to set
|
# these fields by hand. If client doesn't actually use them, Dovecot will
|
# eventually drop them.
|
#
|
# Usually you should just leave this field alone. The potential benefits are
|
# typically unnoticeable.
|
#mail_cache_fields =
|
|
# Space-separated list of fields that Dovecot should never save to cache file.
|
# Useful if you want to save disk space at the cost of more I/O when the fields
|
# needed.
|
#mail_never_cache_fields =
|
|
# The minimum number of mails in a mailbox before updates are done to cache
|
# file. This allows optimizing Dovecot's behavior to do less disk writes at
|
# the cost of more disk reads.
|
#mail_cache_min_mail_count = 0
|
|
# When IDLE command is running, mailbox is checked once in a while to see if
|
# there are any new mails or other changes. This setting defines the minimum
|
# time in seconds to wait between those checks. Dovecot can also use dnotify,
|
# inotify and kqueue to find out immediately when changes occur.
|
#mailbox_idle_check_interval = 30
|
|
# Save mails with CR+LF instead of plain LF. This makes sending those mails
|
# take less CPU, especially with sendfile() syscall with Linux and FreeBSD.
|
# But it also creates a bit more disk I/O which may just make it slower.
|
# Also note that if other software reads the mboxes/maildirs, they may handle
|
# the extra CRs wrong and cause problems.
|
#mail_save_crlf = no
|
|
##
|
## Maildir-specific settings
|
##
|
|
# By default LIST command returns all entries in maildir beginning with a dot.
|
# Enabling this option makes Dovecot return only entries which are directories.
|
# This is done by stat()ing each entry, so it causes more disk I/O.
|
# (For systems setting struct dirent->d_type, this check is free and it's
|
# done always regardless of this setting)
|
#maildir_stat_dirs = no
|
|
# When copying a message, do it with hard links whenever possible. This makes
|
# the performance much better, and it's unlikely to have any side effects.
|
#maildir_copy_with_hardlinks = no
|
|
# When copying a message, try to preserve the base filename. Only if the
|
# destination mailbox already contains the same name (ie. the mail is being
|
# copied there twice), a new name is given. The destination filename check is
|
# done only by looking at dovecot-uidlist file, so if something outside
|
# Dovecot does similar filename preserving copies, you may run into problems.
|
# NOTE: This setting requires maildir_copy_with_hardlinks = yes to work.
|
#maildir_copy_preserve_filename = no
|
|
##
|
## mbox-specific settings
|
##
|
|
# Which locking methods to use for locking mbox. There are four available:
|
# dotlock: Create <mailbox>.lock file. This is the oldest and most NFS-safe
|
# solution. If you want to use /var/mail/ like directory, the users
|
# will need write access to that directory.
|
# fcntl : Use this if possible. Works with NFS too if lockd is used.
|
# flock : May not exist in all systems. Doesn't work with NFS.
|
# lockf : May not exist in all systems. Doesn't work with NFS.
|
#
|
# You can use multiple locking methods; if you do the order they're declared
|
# in is important to avoid deadlocks if other MTAs/MUAs are using multiple
|
# locking methods as well. Some operating systems don't allow using some of
|
# them simultaneously.
|
#mbox_read_locks = fcntl
|
#mbox_write_locks = dotlock fcntl
|
|
# Maximum time in seconds to wait for lock (all of them) before aborting.
|
#mbox_lock_timeout = 300
|
|
# If dotlock exists but the mailbox isn't modified in any way, override the
|
# lock file after this many seconds.
|
#mbox_dotlock_change_timeout = 120
|
|
# When mbox changes unexpectedly we have to fully read it to find out what
|
# changed. If the mbox is large this can take a long time. Since the change
|
# is usually just a newly appended mail, it'd be faster to simply read the
|
# new mails. If this setting is enabled, Dovecot does this but still safely
|
# fallbacks to re-reading the whole mbox file whenever something in mbox isn't
|
# how it's expected to be. The only real downside to this setting is that if
|
# some other MUA changes message flags, Dovecot doesn't notice it immediately.
|
# Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK
|
# commands.
|
#mbox_dirty_syncs = yes
|
|
# Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE,
|
# EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored.
|
#mbox_very_dirty_syncs = no
|
|
# Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK
|
# commands and when closing the mailbox). This is especially useful for POP3
|
# where clients often delete all mails. The downside is that our changes
|
# aren't immediately visible to other MUAs.
|
#mbox_lazy_writes = yes
|
|
# If mbox size is smaller than this (in kilobytes), don't write index files.
|
# If an index file already exists it's still read, just not updated.
|
#mbox_min_index_size = 0
|
|
##
|
## dbox-specific settings
|
##
|
|
# Maximum dbox file size in kilobytes until it's rotated.
|
#dbox_rotate_size = 2048
|
|
# Minimum dbox file size in kilobytes before it's rotated
|
# (overrides dbox_rotate_days)
|
#dbox_rotate_min_size = 16
|
|
# Maximum dbox file age in days until it's rotated. Day always begins from
|
# midnight, so 1 = today, 2 = yesterday, etc. 0 = check disabled.
|
#dbox_rotate_days = 0
|
|
##
|
## IMAP specific settings
|
##
|
|
protocol imap {
|
# Login executable location.
|
#login_executable = /usr/lib/dovecot/imap-login
|
|
# IMAP executable location. Changing this allows you to execute other
|
# binaries before the imap process is executed.
|
#
|
# This would write rawlogs into ~/dovecot.rawlog/ directory:
|
# mail_executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap
|
#
|
# This would attach gdb into the imap process and write backtraces into
|
# /tmp/gdbhelper.* files:
|
# mail_executable = /usr/libexec/dovecot/gdbhelper /usr/libexec/dovecot/imap
|
#
|
#mail_executable = /usr/lib/dovecot/imap
|
mail_executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap
|
|
# Maximum IMAP command line length in bytes. Some clients generate very long
|
# command lines with huge mailboxes, so you may need to raise this if you get
|
# "Too long argument" or "IMAP command line too large" errors often.
|
#imap_max_line_length = 65536
|
|
# Support for dynamically loadable plugins. mail_plugins is a space separated
|
# list of plugins to load.
|
mail_plugins = quota imap_quota
|
#mail_plugin_dir = /usr/lib/dovecot/modules/imap
|
|
# Send IMAP capabilities in greeting message. This makes it unnecessary for
|
# clients to request it with CAPABILITY command, so it saves one round-trip.
|
# Many clients however don't understand it and ask the CAPABILITY anyway.
|
#login_greeting_capability = no
|
|
# Override the IMAP CAPABILITY response.
|
#imap_capability =
|
|
# Workarounds for various client bugs:
|
# delay-newmail:
|
# Send EXISTS/RECENT new mail notifications only when replying to NOOP
|
# and CHECK commands. Some clients ignore them otherwise, for example OSX
|
# Mail (<v2.1). Outlook Express breaks more badly though, without this it
|
# may show user "Message no longer in server" errors. Note that OE6 still
|
# breaks even with this workaround if synchronization is set to
|
# "Headers Only".
|
# outlook-idle:
|
# Outlook and Outlook Express never abort IDLE command, so if no mail
|
# arrives in half a hour, Dovecot closes the connection. This is still
|
# fine, except Outlook doesn't connect back so you don't see if new mail
|
# arrives.
|
# netscape-eoh:
|
# Netscape 4.x breaks if message headers don't end with the empty "end of
|
# headers" line. Normally all messages have this, but setting this
|
# workaround makes sure that Netscape never breaks by adding the line if
|
# it doesn't exist. This is done only for FETCH BODY[HEADER.FIELDS..]
|
# commands. Note that RFC says this shouldn't be done.
|
# tb-extra-mailbox-sep:
|
# With mbox storage a mailbox can contain either mails or submailboxes,
|
# but not both. Thunderbird separates these two by forcing server to
|
# accept '/' suffix in mailbox names in subscriptions list.
|
# The list is space-separated.
|
#imap_client_workarounds = outlook-idle
|
}
|
|
##
|
## POP3 specific settings
|
##
|
|
protocol pop3 {
|
# Login executable location.
|
#login_executable = /usr/lib/dovecot/pop3-login
|
|
# POP3 executable location. See IMAP's mail_executable above for examples
|
# how this could be changed.
|
#mail_executable = /usr/lib/dovecot/pop3
|
mail_executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/pop3
|
|
# Don't try to set mails non-recent or seen with POP3 sessions. This is
|
# mostly intended to reduce disk I/O. With maildir it doesn't move files
|
# from new/ to cur/, with mbox it doesn't write Status-header.
|
#pop3_no_flag_updates = no
|
|
# Support LAST command which exists in old POP3 specs, but has been removed
|
# from new ones. Some clients still wish to use this though. Enabling this
|
# makes RSET command clear all \Seen flags from messages.
|
#pop3_enable_last = no
|
|
# If mail has X-UIDL header, use it as the mail's UIDL.
|
#pop3_reuse_xuidl = no
|
|
# Keep the mailbox locked for the entire POP3 session.
|
#pop3_lock_session = no
|
|
# POP3 UIDL (unique mail identifier) format to use. You can use following
|
# variables:
|
#
|
# %v - Mailbox's IMAP UIDVALIDITY
|
# %u - Mail's IMAP UID
|
# %m - MD5 sum of the mailbox headers in hex (mbox only)
|
# %f - filename (maildir only)
|
#
|
# If you want UIDL compatibility with other POP3 servers, use:
|
# UW's ipop3d : %08Xv%08Xu
|
# Courier version 0 : %f
|
# Courier version 1 : %u
|
# Courier version 2 : %v-%u
|
# Cyrus (<= 2.1.3) : %u
|
# Cyrus (>= 2.1.4) : %v.%u
|
# Older Dovecots : %v.%u
|
# tpop3d : %Mf
|
#
|
# Note that Outlook 2003 seems to have problems with %v.%u format which was
|
# Dovecot's default, so if you're building a new server it would be a good
|
# idea to change this. %08Xu%08Xv should be pretty fail-safe.
|
#
|
# NOTE: Nowadays this is required to be set explicitly, since the old
|
# default was bad but it couldn't be changed without breaking existing
|
# installations. %08Xu%08Xv will be the new default, so use it for new
|
# installations.
|
#
|
pop3_uidl_format = %08Xu%08Xv
|
|
# POP3 logout format string:
|
# %t - number of TOP commands
|
# %p - number of bytes sent to client as a result of TOP command
|
# %r - number of RETR commands
|
# %b - number of bytes sent to client as a result of RETR command
|
# %d - number of deleted messages
|
# %m - number of messages (before deletion)
|
# %s - mailbox size in bytes (before deletion)
|
#pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
|
|
# Support for dynamically loadable plugins. mail_plugins is a space separated
|
# list of plugins to load.
|
mail_plugins = quota
|
#mail_plugin_dir = /usr/lib/dovecot/modules/pop3
|
|
# Workarounds for various client bugs:
|
# outlook-no-nuls:
|
# Outlook and Outlook Express hang if mails contain NUL characters.
|
# This setting replaces them with 0x80 character.
|
# oe-ns-eoh:
|
# Outlook Express and Netscape Mail breaks if end of headers-line is
|
# missing. This option simply sends it if it's missing.
|
# The list is space-separated.
|
#pop3_client_workarounds =
|
}
|
|
##
|
## MANAGESIEVE specific settings
|
##
|
|
protocol managesieve {
|
# Login executable location.
|
#login_executable = /usr/libexec/dovecot/managesieve-login
|
|
# MANAGESIEVE executable location. See IMAP's mail_executable above for
|
# examples how this could be changed.
|
#mail_executable = /usr/libexec/dovecot/managesieve
|
|
# Maximum MANAGESIEVE command line length in bytes. This setting is
|
# directly borrowed from IMAP. But, since long command lines are very
|
# unlikely with MANAGESIEVE, changing this will not be very useful.
|
#managesieve_max_line_length = 65536
|
|
# Specifies the location of the symlink pointing to the active script in
|
# the sieve storage directory. This must match the SIEVE setting used by
|
# deliver (refer to http://wiki.dovecot.org/LDA/Sieve#location for more
|
# info). Variable substitution with % is recognized.
|
sieve=~/.dovecot.sieve
|
|
# This specifies the path to the directory where the uploaded scripts must
|
# be stored. In terms of '%' variable substitution it is identical to
|
# dovecot's mail_location setting used by the mail protocol daemons.
|
sieve_storage=~/sieve
|
|
# If, for some inobvious reason, the sieve_storage remains unset, the
|
# managesieve daemon uses the specification of the mail_location to find out
|
# where to store the sieve files (see explaination in README.managesieve).
|
# The example below, when uncommented, overrides any global mail_location
|
# specification and stores all the scripts in '~/mail/sieve' if sieve_storage
|
# is unset. However, you should always use the sieve_storage setting.
|
# mail_location = mbox:~/mail
|
|
# To fool managesieve clients that are focused on timesieved you can
|
# specify the IMPLEMENTATION capability that the dovecot reports to clients
|
# (default: dovecot).
|
#managesieve_implementation_string = Cyrus timsieved v2.2.13
|
}
|
|
##
|
## LDA specific settings
|
##
|
|
protocol lda {
|
# Address to use when sending rejection mails.
|
postmaster_address = postmaster@example.com
|
|
# Hostname to use in various parts of sent mails, eg. in Message-Id.
|
# Default is the system's real hostname.
|
#hostname =
|
|
# Support for dynamically loadable plugins. mail_plugins is a space separated
|
# list of plugins to load.
|
#mail_plugins =
|
mail_plugin_dir = /usr/lib/dovecot/modules/lda
|
|
# Binary to use for sending mails.
|
#sendmail_path = /usr/lib/sendmail
|
|
# UNIX socket path to master authentication server to find users.
|
auth_socket_path = /var/run/dovecot/auth-master
|
|
# Enabling Sieve plugin for server-side mail filtering
|
mail_plugins = cmusieve quota
|
}
|
|
##
|
## Authentication processes
|
##
|
|
# Executable location
|
#auth_executable = /usr/lib/dovecot/dovecot-auth
|
|
# Set max. process size in megabytes.
|
#auth_process_size = 256
|
|
# Authentication cache size in kilobytes. 0 means it's disabled.
|
# Note that bsdauth, PAM and vpopmail require cache_key to be set for caching
|
# to be used.
|
#auth_cache_size = 0
|
# Time to live in seconds for cached data. After this many seconds the cached
|
# record is no longer used, *except* if the main database lookup returns
|
# internal failure. We also try to handle password changes automatically: If
|
# user's previous authentication was successful, but this one wasn't, the
|
# cache isn't used. For now this works only with plaintext authentication.
|
#auth_cache_ttl = 3600
|
|
# Space separated list of realms for SASL authentication mechanisms that need
|
# them. You can leave it empty if you don't want to support multiple realms.
|
# Many clients simply use the first one listed here, so keep the default realm
|
# first.
|
#auth_realms =
|
|
# Default realm/domain to use if none was specified. This is used for both
|
# SASL realms and appending @domain to username in plaintext logins.
|
#auth_default_realm =
|
|
# List of allowed characters in username. If the user-given username contains
|
# a character not listed in here, the login automatically fails. This is just
|
# an extra check to make sure user can't exploit any potential quote escaping
|
# vulnerabilities with SQL/LDAP databases. If you want to allow all characters,
|
# set this value to empty.
|
#auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
|
|
# Username character translations before it's looked up from databases. The
|
# value contains series of from -> to characters. For example "#@/@" means
|
# that '#' and '/' characters are translated to '@'.
|
#auth_username_translation =
|
|
# Username formatting before it's looked up from databases. You can use
|
# the standard variables here, eg. %Lu would lowercase the username, %n would
|
# drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
|
# "-AT-". This translation is done after auth_username_translation changes.
|
#auth_username_format =
|
|
# If you want to allow master users to log in by specifying the master
|
# username within the normal username string (ie. not using SASL mechanism's
|
# support for it), you can specify the separator character here. The format
|
# is then <username><separator><master username>. UW-IMAP uses "*" as the
|
# separator, so that could be a good choice.
|
#auth_master_user_separator =
|
|
# Username to use for users logging in with ANONYMOUS SASL mechanism
|
#auth_anonymous_username = anonymous
|
|
# More verbose logging. Useful for figuring out why authentication isn't
|
# working.
|
#auth_verbose = no
|
|
# Even more verbose logging for debugging purposes. Shows for example SQL
|
# queries.
|
#auth_debug = no
|
|
# In case of password mismatches, log the passwords and used scheme so the
|
# problem can be debugged. Requires auth_debug=yes to be set.
|
#auth_debug_passwords = no
|
|
# Maximum number of dovecot-auth worker processes. They're used to execute
|
# blocking passdb and userdb queries (eg. MySQL and PAM). They're
|
# automatically created and destroyed as needed.
|
#auth_worker_max_count = 30
|
|
# Host name to use in GSSAPI principal names. The default is to use the
|
# name returned by gethostname().
|
#auth_gssapi_hostname =
|
|
# Kerberos keytab to use for the GSSAPI mechanism. Will use the system
|
# default (usually /etc/krb5.keytab) if not specified.
|
#auth_krb5_keytab =
|
|
auth default {
|
# Space separated list of wanted authentication mechanisms:
|
# plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi
|
# NOTE: See also disable_plaintext_auth setting.
|
mechanisms = plain login
|
|
#
|
# Password database is used to verify user's password (and nothing more).
|
# You can have multiple passdbs and userdbs. This is useful if you want to
|
# allow both system users (/etc/passwd) and virtual users to login without
|
# duplicating the system users into virtual database.
|
#
|
# <doc/wiki/PasswordDatabase.txt>
|
#
|
# By adding master=yes setting inside a passdb you make the passdb a list
|
# of "master users", who can log in as anyone else. Unless you're using PAM,
|
# you probably still want the destination user to be looked up from passdb
|
# that it really exists. This can be done by adding pass=yes setting to the
|
# master passdb. <doc/wiki/Authentication.MasterUsers.txt>
|
|
# Users can be temporarily disabled by adding a passdb with deny=yes.
|
# If the user is found from that database, authentication will fail.
|
# The deny passdb should always be specified before others, so it gets
|
# checked first. Here's an example:
|
|
#passdb passwd-file {
|
# File contains a list of usernames, one per line
|
#args = /etc/dovecot.deny
|
#deny = yes
|
#}
|
|
# PAM authentication. Preferred nowadays by most systems.
|
# Note that PAM can only be used to verify if user's password is correct,
|
# so it can't be used as userdb. If you don't want to use a separate user
|
# database (passwd usually), you can use static userdb.
|
# REMEMBER: You'll need /etc/pam.d/dovecot file created for PAM
|
# authentication to actually work. <doc/wiki/PasswordDatabase.PAM.txt>
|
# passdb pam {
|
# [blocking=yes] [session=yes] [setcred=yes]
|
# [cache_key=<key>] [<service name>]
|
#
|
# By default a new process is forked from dovecot-auth for each PAM lookup.
|
# Setting blocking=yes uses the alternative way: dovecot-auth worker
|
# processes do the PAM lookups.
|
#
|
# session=yes makes Dovecot open and immediately close PAM session. Some
|
# PAM plugins need this to work, such as pam_mkhomedir.
|
#
|
# setcred=yes makes Dovecot establish PAM credentials if some PAM plugins
|
# need that. They aren't ever deleted though, so this isn't enabled by
|
# default.
|
#
|
# cache_key can be used to enable authentication caching for PAM
|
# (auth_cache_size also needs to be set). It isn't enabled by default
|
# because PAM modules can do all kinds of checks besides checking password,
|
# such as checking IP address. Dovecot can't know about these checks
|
# without some help. cache_key is simply a list of variables (see
|
# /usr/share/doc/dovecot-common/wiki/Variables.txt) which must match for
|
# the cached data to be used. Here are some examples:
|
# %u - Username must match. Probably sufficient for most uses.
|
# %u%r - Username and remote IP address must match.
|
# %u%s - Username and service (ie. IMAP, POP3) must match.
|
#
|
# If service name is "*", it means the authenticating service name
|
# is used, eg. pop3 or imap (/etc/pam.d/pop3, /etc/pam.d/imap).
|
#
|
# Some examples:
|
# args = session=yes *
|
# args = cache_key=%u dovecot
|
#args = dovecot
|
# }
|
|
# System users (NSS, /etc/passwd, or similiar)
|
# In many systems nowadays this uses Name Service Switch, which is
|
# configured in /etc/nsswitch.conf. <doc/wiki/AuthDatabase.Passwd.txt>
|
#passdb passwd {
|
# [blocking=yes] - See userdb passwd for explanation
|
#args =
|
#}
|
|
# Shadow passwords for system users (NSS, /etc/shadow or similiar).
|
# Deprecated by PAM nowadays.
|
# <doc/wiki/PasswordDatabase.Shadow.txt>
|
#passdb shadow {
|
# [blocking=yes] - See userdb passwd for explanation
|
#args =
|
#}
|
|
# PAM-like authentication for OpenBSD.
|
# <doc/wiki/PasswordDatabase.BSDAuth.txt>
|
#passdb bsdauth {
|
# [cache_key=<key>] - See cache_key in PAM for explanation.
|
#args =
|
#}
|
|
# passwd-like file with specified location
|
# <doc/wiki/AuthDatabase.PasswdFile.txt>
|
#passdb passwd-file {
|
# Path for passwd-file
|
#args =
|
#}
|
|
# checkpassword executable authentication
|
# NOTE: You will probably want to use "userdb prefetch" with this.
|
# <doc/wiki/PasswordDatabase.CheckPassword.txt>
|
#passdb checkpassword {
|
# Path for checkpassword binary
|
#args =
|
#}
|
|
# SQL database <doc/wiki/AuthDatabase.SQL.txt>
|
passdb sql {
|
# Path for SQL configuration file
|
args = /etc/dovecot/dovecot-sql.conf
|
}
|
|
# LDAP database <doc/wiki/AuthDatabase.LDAP.txt>
|
#passdb ldap {
|
# Path for LDAP configuration file
|
#args = /etc/dovecot/dovecot-ldap.conf
|
#}
|
|
# vpopmail authentication <doc/wiki/AuthDatabase.VPopMail.txt>
|
#passdb vpopmail {
|
# [cache_key=<key>] - See cache_key in PAM for explanation.
|
#args =
|
#}
|
|
#
|
# User database specifies where mails are located and what user/group IDs
|
# own them. For single-UID configuration use "static".
|
#
|
# <doc/wiki/UserDatabase.txt>
|
#
|
|
# System users (NSS, /etc/passwd, or similiar). In many systems nowadays this
|
# uses Name Service Switch, which is configured in /etc/nsswitch.conf.
|
# <doc/wiki/AuthDatabase.Passwd.txt>
|
#userdb passwd {
|
# [blocking=yes] - By default the lookups are done in the main dovecot-auth
|
# process. This setting causes the lookups to be done in auth worker
|
# proceses. Useful with remote NSS lookups that may block.
|
# NOTE: Be sure to use this setting with nss_ldap or users might get
|
# logged in as each others!
|
#args =
|
#}
|
|
# passwd-like file with specified location
|
# <doc/wiki/AuthDatabase.PasswdFile.txt>
|
#userdb passwd-file {
|
# Path for passwd-file
|
#args =
|
#}
|
|
# static settings generated from template <doc/wiki/UserDatabase.Static.txt>
|
#userdb static {
|
# Template for the fields. Can return anything a userdb could normally
|
# return. For example:
|
#
|
# args = uid=500 gid=500 home=/var/mail/%u
|
#
|
# If you use deliver, it needs to look up users only from the userdb. This
|
# of course doesn't work with static because there is no list of users.
|
# Normally static userdb handles this by doing a passdb lookup. This works
|
# with most passdbs, with PAM being the most notable exception. If you do
|
# the user verification another way, you can add allow_all_users=yes to
|
# the args in which case the passdb lookup is skipped.
|
#
|
#args =
|
#}
|
|
# SQL database <doc/wiki/AuthDatabase.SQL.txt>
|
userdb sql {
|
# Path for SQL configuration file
|
args = /etc/dovecot/dovecot-sql.conf
|
}
|
|
# LDAP database <doc/wiki/AuthDatabase.LDAP.txt>
|
#userdb ldap {
|
# Path for LDAP configuration file
|
#args = /etc/dovecot/dovecot-ldap.conf
|
#}
|
|
# vpopmail <doc/wiki/AuthDatabase.VPopMail.txt>
|
#userdb vpopmail {
|
#}
|
|
# "prefetch" user database means that the passdb already provided the
|
# needed information and there's no need to do a separate userdb lookup.
|
# This can be made to work with SQL and LDAP databases, see their example
|
# configuration files for more information how to do it.
|
# <doc/wiki/UserDatabase.Prefetch.txt>
|
userdb prefetch {
|
}
|
|
# User to use for the process. This user needs access to only user and
|
# password databases, nothing else. Only shadow and pam authentication
|
# requires roots, so use something else if possible. Note that passwd
|
# authentication with BSDs internally accesses shadow files, which also
|
# requires roots. Note that this user is NOT used to access mails.
|
# That user is specified by userdb above.
|
user = root
|
|
# Directory where to chroot the process. Most authentication backends don't
|
# work if this is set, and there's no point chrooting if auth_user is root.
|
# Note that valid_chroot_dirs isn't needed to use this setting.
|
#chroot =
|
|
# Number of authentication processes to create
|
#count = 1
|
|
# Require a valid SSL client certificate or the authentication fails.
|
#ssl_require_client_cert = no
|
|
# Take the username from client's SSL certificate, using
|
# X509_NAME_get_text_by_NID() which returns the subject's DN's
|
# CommonName.
|
#ssl_username_from_cert = no
|
|
# It's possible to export the authentication interface to other programs:
|
#socket listen {
|
#master {
|
# Master socket provides access to userdb information. It's typically
|
# used to give Dovecot's local delivery agent access to userdb so it
|
# can find mailbox locations.
|
#path = /var/run/dovecot/auth-master
|
#mode = 0600
|
# Default user/group is the one who started dovecot-auth (root)
|
#user =
|
#group =
|
#}
|
#client {
|
# The client socket is generally safe to export to everyone. Typical use
|
# is to export it to your SMTP server so it can do SMTP AUTH lookups
|
# using it.
|
#path = /var/run/dovecot/auth-client
|
#mode = 0660
|
#}
|
#}
|
|
## dovecot-lda specific settings
|
##
|
socket listen {
|
master {
|
path = /var/run/dovecot/auth-master
|
mode = 0600
|
user = vmail # User running Dovecot LDA
|
#group = vmail # Or alternatively mode 0660 + LDA user in this group
|
}
|
client {
|
path = /var/spool/postfix/private/auth
|
mode = 0660
|
user = postfix
|
group = postfix
|
}
|
}
|
|
}
|
|
# If you wish to use another authentication server than dovecot-auth, you can
|
# use connect sockets. They are assumed to be already running, Dovecot's master
|
# process only tries to connect to them. They don't need any other settings
|
# than the path for the master socket, as the configuration is done elsewhere.
|
# Note that the client sockets must exist in the login_dir.
|
#auth external {
|
# socket connect {
|
# master {
|
# path = /var/run/dovecot/auth-master
|
# }
|
# }
|
#}
|
|
##
|
## Dictionary server settings
|
##
|
|
# Dictionary can be used by some plugins to store key=value lists.
|
# Currently this is only used by dict quota backend. The dictionary can be
|
# used either directly or though a dictionary server. The following dict block
|
# maps dictionary names to URIs when the server is used. These can then be
|
# referenced using URIs in format "proxy:<name>".
|
|
dict {
|
#quota = mysql:/etc/dovecot-dict-quota.conf
|
}
|
|
##
|
## Plugin settings
|
##
|
|
plugin {
|
# Here you can give some extra environment variables to mail processes.
|
# This is mostly meant for passing parameters to plugins. %variable
|
# expansion is done for all values.
|
|
# Quota plugin. Multiple backends are supported:
|
# dirsize: Find and sum all the files found from mail directory.
|
# Extremely SLOW with Maildir. It'll eat your CPU and disk I/O.
|
# dict: Keep quota stored in dictionary (eg. SQL)
|
# maildir: Maildir++ quota
|
# fs: Read-only support for filesystem quota
|
quota = maildir
|
|
# ACL plugin. vfile backend reads ACLs from "dovecot-acl" file from maildir
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# directory. You can also optionally give a global ACL directory path where
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# ACLs are applied to all users' mailboxes. The global ACL directory contains
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# one file for each mailbox, eg. INBOX or sub.mailbox.
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#acl = vfile:/etc/dovecot-acls
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# Convert plugin. If set, specifies the source storage path which is
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# converted to destination storage (mail_location) when the user logs in.
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# The existing mail directory is renamed to <dir>-converted.
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#convert_mail = mbox:%h/mail
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# Skip mailboxes which we can't open successfully instead of aborting.
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#convert_skip_broken_mailboxes = no
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# Trash plugin. When saving a message would make user go over quota, this
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# plugin automatically deletes the oldest mails from configured mailboxes
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# until the message can be saved within quota limits. The configuration file
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# is a text file where each line is in format: <priority> <mailbox name>
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# Mails are first deleted in lowest -> highest priority number order
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#trash = /etc/dovecot-trash.conf
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# Lazy expunge plugin. Currently works only with maildirs. When a user
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# expunges mails, the mails are moved to a mailbox in another namespace
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# (1st). When a mailbox is deleted, the mailbox is moved to another namespace
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# (2nd) as well. Also if the deleted mailbox had any expunged messages,
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# they're moved to a 3rd namespace. The mails won't be counted in quota,
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# and they're not deleted automatically (use a cronjob or something).
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#lazy_expunge = .EXPUNGED/ .DELETED/ .DELETED/.EXPUNGED/
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}
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