Gestionnaire de fichiers - Editer - /etc/dovecot/dovecot.conf
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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 = no # 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 = no # 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, bytes=%i/%o # 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 } } ## ## 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 = 3 # 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 } } ## ## 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 = 4 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 = 1M # 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 auth_policy_server_url = http://127.0.0.1:579/dovecot-auth-policy auth_policy_server_timeout_msecs = 3000 auth_policy_hash_mech = sha512 auth_policy_request_attributes = auth_database=mail database=mail service=dovecot username=%{orig_user} authtoken_hash=$0$0$%{hashed_password} local_host=%{real_lip} local_port=%{real_lport} remote_host=%{real_rip} remote_port=%{real_rport} auth_policy_reject_on_fail = no auth_policy_hash_truncate = 64 auth_policy_hash_nonce = "dummmy" # auth_policy_hash_nonce and auth_policy_server_api_header !include_try /etc/dovecot/auth_policy.conf ## ## 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 = 2048 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 = 2 # 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 = 512 # 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 = 2 # 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 = 512 # 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 = 2 # 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 = 512 # 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/ }
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