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## Dovecot configuration file
# NOTICE FOR CPANEL SYSTEMS
# On cPanel servers this file is generated by combining a
# template at /var/cpanel/templates/dovecot/main.default
# and a datastore at /var/cpanel/conf/dovecot/main
#
# The template may be customized by making a copy of it at
# /var/cpanel/templates/dovecot/main.local
# similar to the way in which httpd.conf can be customized
#
# Direct edits of the rendered dovecot.conf file will not
# be preserved when dovecot is updated. Use the
# "Mailserver Configuration" interface in WebHostManager instead.
# If you're in a hurry, see http://wiki2.dovecot.org/QuickConfiguration
# "doveconf -n" command gives a clean output of the changed settings. Use it
# instead of copy&pasting files 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
# value inside quotes, eg.: key = "# char and trailing whitespace "
# Most (but not all) settings can be overridden by different protocols and/or
# source/destination IPs by placing the settings inside sections, for example:
# protocol imap { }, local 127.0.0.1 { }, remote 10.0.0.0/8 { }
# Default values are shown for each setting, it's not required to uncomment
# those. These are exceptions to this though: No sections (e.g. namespace {})
# or plugin settings are added by default, they're listed only as examples.
# Paths are also just examples with the real defaults being based on configure
# options. The paths listed here are for configure --prefix=/usr
# --sysconfdir=/etc --localstatedir=/var
# Base directory where to store runtime data.
#base_dir = /var/run/dovecot
# Protocols we want to be serving: imap pop3
# If you only want to use dovecot-auth, you can set this to "none".
protocols = lmtp imap pop3
# A comma separated list of IPs or hosts where to listen in for connections.
# "*" listens in all IPv4 interfaces, "::" listens in all IPv6 interfaces.
# If you want to specify non-default ports or anything more complex,
# edit conf.d/master.conf.
#listen = *, ::
# 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
# means that after master process has died, the client processes can't write
# to log files anymore.
#shutdown_clients = yes
verbose_proctitle = yes
# SSL DH parameters
# Generate new params with `openssl dhparam -out /etc/dovecot/dh.pem 4096`
# Or migrate from old ssl-parameters.dat file with the command dovecot
# gives on startup when ssl_dh is unset.
ssl_dh = </etc/dovecot/dh.pem
# SSL & SNI hosts
!include_try /etc/dovecot/ssl.conf
!include_try /etc/dovecot/sni.conf
##
## Login processes
##
# Name of this instance. In multi-instance setup doveadm and other commands
# can use -i <instance_name> to select which instance is used (an alternative
# to -c <config_path>). The instance name is also added to Dovecot processes
# in ps output.
#instance_name = dovecot
# Greeting message for clients.
#login_greeting = Dovecot ready.
# Space separated list of trusted network ranges. Connections from these
# IPs are allowed to override their IP addresses and ports (for logging and
# for authentication checks). disable_plaintext_auth is also ignored for
# these networks. Typically you'd specify your IMAP proxy servers here.
#login_trusted_networks =
# Space separated list of login access check sockets (e.g. tcpwrap)
#login_access_sockets =
# With proxy_maybe=yes if proxy destination matches any of these IPs, don't do
# proxying. This isn't necessary normally, but may be useful if the destination
# IP is e.g. a load balancer's IP.
#auth_proxy_self =
##
## Mailbox locations and namespaces
##
# Location for users' mailboxes. The default is empty, which means that Dovecot
# tries to find the mailboxes automatically. This won't work if the user
# doesn't yet have any mail, 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 doc/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 =
namespace inbox {
type = 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 = INBOX.
# 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. You'll most likely also want to set list=no. This is mostly
# useful when converting from another server with different namespaces which
# you want to deprecate but still keep working. For example you can create
# hidden namespaces with prefixes "~/mail/", "~%u/mail/" and "mail/".
#hidden = yes
# Show the mailboxes under this namespace with LIST command. This makes the
# namespace visible for clients that don't support NAMESPACE extension.
# "children" value lists child mailboxes, but hides the namespace prefix.
#list = yes
# Namespace handles its own subscriptions. If set to "no", the parent
# namespace handles them (empty prefix should always have this as "yes")
#subscriptions = yes
#subscriptions = yes
mailbox Drafts {
special_use = \Drafts
auto = subscribe
}
mailbox spam {
special_use = \Junk
auto = subscribe
}
mailbox Trash {
special_use = \Trash
auto = subscribe
}
mailbox Sent {
special_use = \Sent
auto = subscribe
}
mailbox "Sent Messages" {
special_use = \Sent
auto = no
}
mailbox Archive {
special_use = \Archive
auto = create
}
mailbox "Archives" {
special_use = \Archive
auto = no
}
}
# Example shared namespace configuration
#namespace {
#type = shared
#separator = /
# Mailboxes are visible under "shared/user@domain/"
# %%n, %%d and %%u are expanded to the destination user.
#prefix = shared/%%u/
# Mail location for other users' mailboxes. Note that %variables and ~/
# expands to the logged in user's data. %%n, %%d, %%u and %%h expand to the
# destination user's data.
#location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
# Use the default namespace for saving subscriptions.
#subscriptions = no
# List the shared/ namespace only if there are visible shared mailboxes.
#list = children
#}
# Should shared INBOX be visible as "shared/user" or "shared/user/INBOX"?
#mail_shared_explicit_inbox = no
# System user and group used to access mails. If you use multiple, userdb
# can override these by returning uid or gid fields. You can use either numbers
# or names. <doc/wiki/UserIds.txt>
#mail_uid =
#mail_gid =
# 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 =
# 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
# Dictionary for key=value mailbox attributes. This is used for example by
# URLAUTH and METADATA extensions.
#mail_attribute_dict =
# A comment or note that is associated with the server. This value is
# accessible for authenticated users through the IMAP METADATA server
# entry "/shared/comment".
#mail_server_comment = ""
# Indicates a method for contacting the server administrator. According to
# RFC 5464, this value MUST be a URI (e.g., a mailto: or tel: URL), but that
# is currently not enforced. Use for example mailto:admin@example.com. This
# value is accessible for authenticated users through the IMAP METADATA server
# entry "/shared/admin".
#mail_server_admin =
##
## Mail processes
##
# Don't use mmap() at all. This is required if you store indexes to shared
# filesystems (NFS or clustered filesystem).
#mmap_disable = no
# Rely on O_EXCL to work when creating dotlock files. NFS supports O_EXCL
# since version 3, so this should be safe to use nowadays by default.
#dotlock_use_excl = yes
# When to use fsync() or fdatasync() calls:
# optimized (default): Whenever necessary to avoid losing important data
# always: Useful with e.g. NFS when write()s are delayed
# never: Never use it (best performance, but crashes can lose data)
#mail_fsync = optimized
# Mail storage exists in NFS. Set this to yes to make Dovecot flush NFS caches
# whenever needed. If you're using only a single mail server this isn't needed.
#mail_nfs_storage = no
# Mail index files also exist in NFS. Setting this to yes requires
# mmap_disable=yes and fsync_disable=no.
#mail_nfs_index = 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
# 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 = yes
# Directory where mails can be temporarily stored. Usually it's used only for
# mails larger than >= 128 kB. It's used by various parts of Dovecot, for
# example LDA/LMTP while delivering large mails or zlib plugin for keeping
# uncompressed mails.
#mail_temp_dir = /tmp
# 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 = 201
#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 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, mail_chroot or auth chroot
# settings. If this setting is empty, "/./" in home dirs are ignored.
# 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. If your home directories are prefixed with
# the chroot directory, append "/." to mail_chroot. <doc/wiki/Chrooting.txt>
#mail_chroot =
# UNIX socket path to master authentication server to find users.
# This is used by imap (for shared users) and lda.
#auth_socket_path = /var/run/dovecot/auth-userdb
# Directory where to look up mail plugins.
#mail_plugin_dir = /usr/lib/dovecot
# Space separated list of plugins to load for all services. Plugins specific to
# IMAP, LDA, etc. are added to this list in their own .conf files.
# Quota support must be enabled globally for the quota-status
# service to work
mail_plugins = quota quota_clone zlib
##
## Mailbox handling optimizations
##
# Mailbox list indexes can be used to optimize IMAP STATUS commands. They are
# also required for IMAP NOTIFY extension to be enabled.
mailbox_list_index = yes
# Trust mailbox list index to be up-to-date. This reduces disk I/O at the cost
# of potentially returning out-of-date results after e.g. server crashes.
# The results will be automatically fixed once the folders are opened.
#mailbox_list_index_very_dirty_syncs = yes
# Should INBOX be kept up-to-date in the mailbox list index? By default it's
# not, because most of the mailbox accesses will open INBOX anyway.
#mailbox_list_index_include_inbox = no
# 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 to wait between those checks. Dovecot can also use inotify and
# kqueue to find out immediately when changes occur.
mailbox_idle_check_interval = 30 secs
# 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
# Max number of mails to keep open and prefetch to memory. This only works with
# some mailbox formats and/or operating systems.
mail_prefetch_count = 20
# How often to scan for stale temporary files and delete them (0 = never).
# These should exist only after Dovecot dies in the middle of saving mails.
#mail_temp_scan_interval = 1w
# How many slow mail accesses sorting can perform before it returns failure.
# With IMAP the reply is: NO [LIMIT] Requested sort would have taken too long.
# The untagged SORT reply is still returned, but it's likely not correct.
#mail_sort_max_read_count = 0
protocol !indexer-worker {
# If folder vsize calculation requires opening more than this many mails from
# disk (i.e. mail sizes aren't in cache already), return failure and finish
# the calculation via indexer process. Disabled by default. This setting must
# be 0 for indexer-worker processes.
#mail_vsize_bg_after_count = 0
}
##
## 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 = yes
# Assume Dovecot is the only MUA accessing Maildir: Scan cur/ directory only
# when its mtime changes unexpectedly or when we can't find the mail otherwise.
maildir_very_dirty_syncs = yes
# If enabled, Dovecot doesn't use the S=<size> in the Maildir filenames for
# getting the mail's physical size, except when recalculating Maildir++ quota.
# This can be useful in systems where a lot of the Maildir filenames have a
# broken size. The performance hit for enabling this is very small.
maildir_broken_filename_sizes = yes
# Always move mails from new/ directory to cur/, even when the \Recent flags
# aren't being reset.
#maildir_empty_new = no
##
## mdbox-specific settings
##
# Maximum dbox file size until it's rotated.
mdbox_rotate_size = 10M
# Maximum dbox file age until it's rotated. Typically in days. Day begins
# from midnight, so 1d = today, 2d = yesterday, etc. 0 = check disabled.
# When creating new mdbox files, immediately preallocate their size to
# mdbox_rotate_size. This setting currently works only in Linux with some
# filesystems (ext4, xfs).
#mdbox_preallocate_space = no
##
## IMAP specific settings
##
protocol imap {
# If nothing happens for this long while client is IDLEing, move the connection
# to imap-hibernate process and close the old imap process. This saves memory,
# because connections use very little memory in imap-hibernate process. The
# downside is that recreating the imap process back uses some resources.
imap_hibernate_timeout = 30s
# 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
# Maximum number of IMAP connections allowed for a user from each IP address.
# NOTE: The username is compared case-sensitively.
mail_max_userip_connections = 20
# Space separated list of plugins to load (default is global mail_plugins).
mail_plugins = acl quota imap_quota
mail_plugins = $mail_plugins zlib imap_zlib quota_clone virtual
#mail_plugin_dir = /usr/lib/dovecot/imap
# IMAP logout format string:
# %i - total number of bytes read from client
# %o - total number of bytes sent to client
# %{fetch_hdr_count} - Number of mails with mail header data sent to client
# %{fetch_hdr_bytes} - Number of bytes with mail header data sent to client
# %{fetch_body_count} - Number of mails with mail body data sent to client
# %{fetch_body_bytes} - Number of bytes with mail body data sent to client
# %{deleted} - Number of mails where client added \Deleted flag
# %{expunged} - Number of mails that client expunged, which does not
# include automatically expunged mails
# %{autoexpunged} - Number of mails that were automatically expunged after
# client disconnected
# %{trashed} - Number of mails that client copied/moved to the
# special_use=\Trash mailbox.
# %{appended} - Number of mails saved during the session
imap_logout_format = in=%i out=%o deleted=%{deleted} expunged=%{expunged} trashed=%{trashed} hdr_count=%{fetch_hdr_count}
# Override the IMAP CAPABILITY response. If the value begins with '+',
# add the given capabilities on top of the defaults (e.g. +XFOO XBAR).
imap_capability = +NAMESPACE
# How many seconds to wait between "OK Still here" notifications when
# client is IDLEing.
imap_idle_notify_interval = 24 min
# ID field names and values to send to clients. Using * as the value makes
# Dovecot use the default value. The following fields have default values
# currently: name, version, os, os-version, support-url, support-email.
#imap_id_send =
# ID fields sent by client to log. * means everything.
#imap_id_log =
# 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".
# tb-extra-mailbox-sep:
# Thunderbird gets somehow confused with LAYOUT=fs (mbox and dbox) and
# adds extra '/' suffixes to mailbox names. This option causes Dovecot to
# ignore the extra '/' instead of treating it as invalid mailbox name.
# tb-lsub-flags:
# Show \Noselect flags for LSUB replies with LAYOUT=fs (e.g. mbox).
# This makes Thunderbird realize they aren't selectable and show them
# greyed out, instead of only later giving "not selectable" popup error.
#
# The list is space-separated.
#imap_client_workarounds =
# Host allowed in URLAUTH URLs sent by client. "*" allows all.
#imap_urlauth_host =
# Enable IMAP LITERAL- extension (replaces LITERAL+)
#imap_literal_minus = no
# What happens when FETCH fails due to some internal error:
# disconnect-immediately:
# The FETCH is aborted immediately and the IMAP client is disconnected.
# disconnect-after:
# The FETCH runs for all the requested mails returning as much data as
# possible. The client is finally disconnected without a tagged reply.
# no-after:
# Same as disconnect-after, but tagged NO reply is sent instead of
# disconnecting the client. If the client attempts to FETCH the same failed
# mail more than once, the client is disconnected. This is to avoid clients
# from going into infinite loops trying to FETCH a broken mail.
#imap_fetch_failure = disconnect-immediately
namespace spam {
prefix = spam
separator = .
location = virtual:/usr/local/cpanel/etc/dovecot/virtual/spam:INDEX=~/mail/virtual/%u/spam
list = no
hidden = yes
}
namespace sent {
prefix = sent
separator = .
location = virtual:/usr/local/cpanel/etc/dovecot/virtual/sent:INDEX=~/mail/virtual/%u/sent
list = no
hidden = yes
}
namespace inbox {
mailbox Trash {
autoexpunge = 30d
}
}
}
##
## POP3 specific settings
##
protocol 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
# Allow only one POP3 session to run simultaneously for the same user.
#pop3_lock_session =
# POP3 UIDL (unique mail identifier) format to use. You can use following
# variables, along with the variable modifiers described in
# doc/wiki/Variables.txt (e.g. %Uf for the filename in uppercase)
#
# %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 : %f or %v-%u (both might be used simultaneosly)
# Cyrus (<= 2.1.3) : %u
# Cyrus (>= 2.1.4) : %v.%u
# Dovecot v0.99.x : %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.
#
pop3_uidl_format = UID%u-%v
# Permanently save UIDLs sent to POP3 clients, so pop3_uidl_format changes
# won't change those UIDLs. Currently this works only with Maildir.
#pop3_save_uidl = no
# What to do about duplicate UIDLs if they exist?
# allow: Show duplicates to clients.
# rename: Append a temporary -2, -3, etc. counter after the UIDL.
#pop3_uidl_duplicates = allow
# This option changes POP3 behavior so that it's not possible to actually
# delete mails via POP3, only hide them from future POP3 sessions. The mails
# will still be counted towards user's quota until actually deleted via IMAP.
# Use e.g. "$POP3Deleted" as the value (it will be visible as IMAP keyword).
# Make sure you can legally archive mails before enabling this setting.
#pop3_deleted_flag =
# POP3 requires message sizes to be listed as if they had CR+LF linefeeds.
# Many POP3 servers violate this by returning the sizes with LF linefeeds,
# because it's faster to get. When this setting is enabled, Dovecot still
# tries to do the right thing first, but if that requires opening the
# message, it fallbacks to the easier (but incorrect) size.
#pop3_fast_size_lookups = no
# POP3 logout format string:
# %i - total number of bytes read from client
# %o - total number of bytes sent to client
# %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
# %{deleted_bytes} - number of bytes in deleted messages
# %m - number of messages (before deletion)
# %s - mailbox size in bytes (before deletion)
# %u - old/new UIDL hash. may help finding out if UIDLs changed unexpectedly
pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s, bytes=%i/%o
# Maximum number of POP3 connections allowed for a user from each IP address.
# NOTE: The username is compared case-sensitively.
mail_max_userip_connections = 20
# Space separated list of plugins to load (default is global mail_plugins).
mail_plugins = quota
mail_plugins = $mail_plugins quota quota_clone virtual zlib
#mail_plugin_dir = /usr/lib/dovecot/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 =
namespace spam {
prefix = spam
separator = .
location = virtual:/usr/local/cpanel/etc/dovecot/virtual/spam:INDEX=~/mail/virtual/%u/spam
list = no
hidden = yes
}
namespace sent {
prefix = sent
separator = .
location = virtual:/usr/local/cpanel/etc/dovecot/virtual/sent:INDEX=~/mail/virtual/%u/sent
list = no
hidden = yes
}
namespace inbox {
mailbox Trash {
autoexpunge = 30d
}
}
}
##
## LMTP specific settings
##
protocol lmtp {
quota_full_tempfail = no
# Address to use when sending rejection mails.
# Default is postmaster@%d. %d expands to recipient domain.
postmaster_address = root
mail_plugins = quota quota_clone zlib
}
lmtp_save_to_detail_mailbox = yes
lmtp_user_concurrency_limit = 25
recipient_delimiter = +
# Support proxying to other LMTP/SMTP servers by performing passdb lookups.
#lmtp_proxy = no
# When recipient address includes the detail (e.g. user+detail), try to save
# the mail to the detail mailbox. See also recipient_delimiter and
# lda_mailbox_autocreate settings.
#lmtp_save_to_detail_mailbox = no
# Verify quota before replying to RCPT TO. This adds a small overhead.
lmtp_rcpt_check_quota = yes
# Which recipient address to use for Delivered-To: header and Received:
# header. The default is "final", which is the same as the one given to
# RCPT TO command. "original" uses the address given in RCPT TO's ORCPT
# parameter, "none" uses nothing. Note that "none" is currently always used
# when a mail has multiple recipients.
#lmtp_hdr_delivery_address = final
##
## LDA specific settings
##
protocol lda {
quota_full_tempfail = no
# Address to use when sending rejection mails.
# Default is postmaster@%d. %d expands to recipient domain.
postmaster_address = root
# Hostname to use in various parts of sent mails (e.g. in Message-Id) and
# in LMTP replies. Default is the system's real hostname@domain.
#hostname =
# Support for dynamically loadable plugins. mail_plugins is a space separated
# list of plugins to load.
mail_plugins = quota quota_clone zlib
#mail_plugin_dir = /usr/lib/dovecot/lda
# Binary to use for sending mails.
#sendmail_path = /usr/lib/sendmail
# If non-empty, send mails via this SMTP host[:port] instead of sendmail.
#submission_host =
# Subject: header to use for rejection mails. You can use the same variables
# as for rejection_reason below.
#rejection_subject = Rejected: %s
# UNIX socket path to master authentication server to find users.
#auth_socket_path = /var/run/dovecot/auth-master
}
# Should saving a mail to a nonexistent mailbox automatically create it?
lda_mailbox_autocreate = yes
# Should automatically created mailboxes be also automatically subscribed?
#lda_mailbox_autosubscribe = no
##
## Authentication processes
##
# 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
# connection is considered secure and plaintext authentication is allowed.
# See also ssl=required setting.
disable_plaintext_auth = no
# Auth cache settings
# Authentication cache size (e.g. 10M). 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 = 999M
# Time to live for cached data. After TTL expires 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 sec
# TTL for negative hits (user not found, password mismatch).
# 0 disables caching them completely.
auth_cache_negative_ttl = 3600 sec
# 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.
#Allow + in usernames
auth_username_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$-=?^_{}~./@+%"
# 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
# Time to delay before replying to failed authentications.
#auth_failure_delay = 2 secs
# Space separated list of wanted authentication mechanisms:
# plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey
# gss-spnego
# NOTE: See also disable_plaintext_auth setting.
auth_mechanisms = plain login
passdb {
driver = pam
args = dovecot
deny = yes
}
##
## Password and user databases
##
passdb {
driver = dict
args = /usr/local/cpanel/etc/dovecot/cpauthd-dict.conf
result_internalfail = continue
result_failure = return-fail
}
userdb {
driver = prefetch
}
userdb {
driver = dict
args = /usr/local/cpanel/etc/dovecot/cpauthd-dict.conf
}
##
## Log destination.
##
# Log file to use for error messages. "syslog" logs to syslog,
# /dev/stderr logs to stderr.
#log_path = syslog
# Log file to use for informational messages. Defaults to log_path.
#info_log_path =
# Log file to use for debug messages. Defaults to info_log_path.
#debug_log_path =
# 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
##
## Logging verbosity and debugging.
##
# Log unsuccessful authentication attempts and the reasons why they failed.
#auth_verbose = no
# In case of password mismatches, log the attempted password. Valid values are
# no, plain and sha1. sha1 can be useful for detecting brute force password
# attempts vs. user simply trying the same password over and over again.
# You can also truncate the value to n chars by appending ":n" (e.g. sha1:6).
#auth_verbose_passwords = 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. Enabling this also enables auth_debug.
#auth_debug_passwords = no
# Enable mail process debugging. This can help you figure out why Dovecot
# isn't finding your mails.
#mail_debug = no
# Show protocol level SSL errors.
#verbose_ssl = no
# mail_log plugin provides more event logging for mail processes.
plugin {
# Events to log. Also available: flag_change append
#mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
# Available fields: uid, box, msgid, from, subject, size, vsize, flags
# size and vsize are available only for expunge and copy events.
#mail_log_fields = uid box msgid size
}
##
## Log formatting.
##
# Prefix for each line written to log file. % codes are in strftime(3)
# format.
#log_timestamp = "%b %d %H:%M:%S "
# 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 = %$: %s
# Log prefix for mail processes. See doc/wiki/Variables.txt for list of
# possible variables you can use.
#mail_log_prefix = "%s(%u)<%{pid}><%{session}>: "
# Format to use for logging mail deliveries:
# %$ - Delivery status message (e.g. "saved to INBOX")
# %m / %{msgid} - Message-ID
# %s / %{subject} - Subject
# %f / %{from} - From address
# %p / %{size} - Physical size
# %w / %{vsize} - Virtual size
# %e / %{from_envelope} - MAIL FROM envelope
# %{to_envelope} - RCPT TO envelope
# %{delivery_time} - How many milliseconds it took to deliver the mail
# %{session_time} - How long LMTP session took, not including delivery_time
# %{storage_id} - Backend-specific ID for mail, e.g. Maildir filename
#deliver_log_format = msgid=%m: %$
##
## Services
##
service config {
vsz_limit = 1024 M
}
service quota-status {
executable = quota-status -p postfix
unix_listener {
path = quota-status
mode = 0666
}
}
service auth {
unix_listener auth-client {
path = auth-client
mode = 0666
}
}
service stats {
unix_listener stats-writer {
mode = 0666
}
}
plugin {
}
mail_access_groups = dovecot
service dict {
unix_listener dict {
mode = 0660
group = dovecot
}
}
# Disabled until we offically support Pigeonhole
#managesieve_notify_capability = mailto
#managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave
service lmtp {
# 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.
vsz_limit = 512 M
#process_min_avail =
#We always want this. Otherwise one connection could block another
#connection that shares the same process.
client_limit = 1
process_limit = 500
unix_listener lmtp {
user = mailnull
group = mail
mode = 0660
}
}
service imap-login {
# 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.
client_limit = 500
# 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.
process_limit = 50
# Number of login processes to keep for listening new connections.
process_min_avail = 5
# Should each login be processed in its 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.
service_count = 0
# Set max. process size in megabytes. If you don't use
# login_process_per_connection you might need to grow this.
vsz_limit = 128 M
# 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.
#drop_priv_before_exec =
# 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>
#chroot = yes
# 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>
#user = dovecot
# IP or host address where to listen in for non-SSL connections. Defaults
# to above if not specified.
inet_listener imap {
address = *
}
# IP or host address where to listen in for SSL connections. Defaults
# to above if not specified.
inet_listener imaps {
address = *
}
}
service imap {
# Maximum number of running mail processes. When this limit is reached,
# new users aren't allowed to log in.
process_limit = 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.
vsz_limit = 512 M
# 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.
#drop_priv_before_exec =
unix_listener imap-master {
user = $default_internal_user
}
extra_groups = $default_internal_group
}
service imap-hibernate {
unix_listener imap-hibernate {
mode = 0660
group = $default_internal_group
}
}
service managesieve-login {
# 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.
client_limit = 500
# 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.
process_limit = 50
# Number of login processes to keep for listening new connections.
process_min_avail = 5
# Should each login be processed in its 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.
service_count = 0
# Set max. process size in megabytes. If you don't use
# login_process_per_connection you might need to grow this.
vsz_limit = 128 M
# 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.
#drop_priv_before_exec =
# 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>
#chroot = yes
# 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>
#user = dovecot
}
service managesieve {
# Maximum number of running mail processes. When this limit is reached,
# new users aren't allowed to log in.
process_limit = 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.
vsz_limit = 512 M
# 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.
#drop_priv_before_exec =
}
service pop3-login {
# 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.
client_limit = 500
# 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.
process_limit = 50
# Number of login processes to keep for listening new connections.
process_min_avail = 5
# Should each login be processed in its 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.
service_count = 0
# Set max. process size in megabytes. If you don't use
# login_process_per_connection you might need to grow this.
vsz_limit = 128 M
# 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.
#drop_priv_before_exec =
# 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>
#chroot = yes
# 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>
#user = dovecot
# IP or host address where to listen in for non-SSL connections. Defaults
# to above if not specified.
inet_listener pop3 {
address = *
}
# IP or host address where to listen in for SSL connections. Defaults
# to above if not specified.
inet_listener pop3s {
address = *
}
}
service pop3 {
# Maximum number of running mail processes. When this limit is reached,
# new users aren't allowed to log in.
process_limit = 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.
vsz_limit = 512 M
# 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.
#drop_priv_before_exec =
}
# Should all 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 e.g. because of a security fix).
#shutdown_clients = yes
# If non-zero, run mail commands via this many connections to doveadm server,
# instead of running them directly in the same process.
#doveadm_worker_count = 0
# UNIX socket or host:port used for connecting to doveadm server
#doveadm_socket_path = doveadm-server
# Space separated list of environment variables that are preserved on Dovecot
# startup and passed down to all of its child processes. You can also give
# key=value pairs to always set specific settings.
#import_environment = TZ
##
## Dictionary server settings
##
# Dictionary can be used to store key=value lists. This is used by several
# plugins. The dictionary can be accessed 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>".
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 limits are set using "quota_rule" parameters, either in here or in
# userdb. It's also possible to give mailbox-specific limits, for example:
# quota_rule = *:storage=1048576
# quota_rule2 = Trash:storage=102400
# User has now 1GB quota, but when saving to Trash mailbox the user gets
# additional 100MB.
#
# Multiple quota roots are also possible, for example:
# quota = dict:user::proxy::quota
# quota2 = dict:domain:%d:proxy::quota_domain
# quota_rule = *:storage=102400
# quota2_rule = *:storage=1048576
# Gives each user their own 100MB quota and one shared 1GB quota within
# the domain.
#
# You can execute a given command when user exceeds a specified quota limit.
# Each quota root has separate limits. Only the command for the first
# exceeded limit is excecuted, so put the highest limit first.
# Note that % needs to be escaped as %%, otherwise "% " expands to empty.
# quota_warning = storage=95%% /usr/local/bin/quota-warning.sh 95
# quota_warning2 = storage=80%% /usr/local/bin/quota-warning.sh 80
quota_exceeded_message = "Mailbox is full / Blocks limit exceeded / Inode limit exceeded"
# ACL plugin. vfile backend reads ACLs from "dovecot-acl" file from maildir
# directory. You can also optionally give a global ACL directory path where
# ACLs are applied to all users' mailboxes. The global ACL directory contains
# one file for each mailbox, eg. INBOX or sub.mailbox. cache_secs parameter
# specifies how many seconds to wait between stat()ing dovecot-acl file
# to see if it changed.
acl = vfile:cache_secs=86400
# To let users LIST mailboxes shared by other users, Dovecot needs a
# shared mailbox dictionary. For example:
#acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes
# Convert plugin. If set, specifies the source storage path which is
# converted to destination storage (mail_location) when the user logs in.
# The existing mail directory is renamed to <dir>-converted.
#convert_mail = mbox:%h/mail
# Skip mailboxes which we can't open successfully instead of aborting.
#convert_skip_broken_mailboxes = no
# Skip directories beginning with '.'
#convert_skip_dotdirs = no
# If source storage has mailbox names with destination storage's hierarchy
# separators, replace them with this character.
#convert_alt_hierarchy_char = _
# Trash plugin. When saving a message would make user go over quota, this
# plugin automatically deletes the oldest mails from configured mailboxes
# until the message can be saved within quota limits. The configuration file
# is a text file where each line is in format: <priority> <mailbox name>
# Mails are first deleted in lowest -> highest priority number order
#trash = /etc/dovecot-trash.conf
# Expire plugin. Mails are expunged from mailboxes after being there the
# configurable time. The first expiration date for each mailbox is stored in
# a dictionary so it can be quickly determined which mailboxes contain
# expired mails. The actual expunging is done in a nightly cronjob, which
# you must set up:
# dovecot --exec-mail ext /usr/libexec/dovecot/expire-tool
#expire = Trash 7 Spam 30
#expire_dict = db:/var/lib/dovecot/expire.db
# Lazy expunge plugin. Currently works only with maildirs. When a user
# expunges mails, the mails are moved to a mailbox in another namespace
# (1st). When a mailbox is deleted, the mailbox is moved to another namespace
# (2nd) as well. Also if the deleted mailbox had any expunged messages,
# they're moved to a 3rd namespace. The mails won't be counted in quota,
# and they're not deleted automatically (use a cronjob or something).
#lazy_expunge = .EXPUNGED/ .DELETED/ .DELETED/.EXPUNGED/
}