366 lines
15 KiB
Plaintext
366 lines
15 KiB
Plaintext
##
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## Mailbox locations and namespaces
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##
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# Location for users' mailboxes. The default is empty, which means that Dovecot
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# tries to find the mailboxes automatically. This won't work if the user
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# doesn't yet have any mail, so you should explicitly tell Dovecot the full
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# location.
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#
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# If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u)
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# isn't enough. You'll also need to tell Dovecot where the other mailboxes are
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# kept. This is called the "root mail directory", and it must be the first
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# path given in the mail_location setting.
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#
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# There are a few special variables you can use, eg.:
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#
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# %u - username
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# %n - user part in user@domain, same as %u if there's no domain
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# %d - domain part in user@domain, empty if there's no domain
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# %h - home directory
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#
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# See doc/wiki/Variables.txt for full list. Some examples:
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#
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# mail_location = maildir:~/Maildir
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# mail_location = mbox:~/mail:INBOX=/var/mail/%u
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# mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
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#
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# <doc/wiki/MailLocation.txt>
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#
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mail_location = maildir:~/.maildir
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# If you need to set multiple mailbox locations or want to change default
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# namespace settings, you can do it by defining namespace sections.
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#
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# You can have private, shared and public namespaces. Private namespaces
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# are for user's personal mails. Shared namespaces are for accessing other
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# users' mailboxes that have been shared. Public namespaces are for shared
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# mailboxes that are managed by sysadmin. If you create any shared or public
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# namespaces you'll typically want to enable ACL plugin also, otherwise all
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# users can access all the shared mailboxes, assuming they have permissions
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# on filesystem level to do so.
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namespace inbox {
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# Namespace type: private, shared or public
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#type = private
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# Hierarchy separator to use. You should use the same separator for all
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# namespaces or some clients get confused. '/' is usually a good one.
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# The default however depends on the underlying mail storage format.
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#separator =
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# Prefix required to access this namespace. This needs to be different for
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# all namespaces. For example "Public/".
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#prefix =
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# Physical location of the mailbox. This is in same format as
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# mail_location, which is also the default for it.
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#location =
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# There can be only one INBOX, and this setting defines which namespace
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# has it.
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inbox = yes
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# If namespace is hidden, it's not advertised to clients via NAMESPACE
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# extension. You'll most likely also want to set list=no. This is mostly
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# useful when converting from another server with different namespaces which
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# you want to deprecate but still keep working. For example you can create
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# hidden namespaces with prefixes "~/mail/", "~%u/mail/" and "mail/".
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#hidden = no
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# Show the mailboxes under this namespace with LIST command. This makes the
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# namespace visible for clients that don't support NAMESPACE extension.
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# "children" value lists child mailboxes, but hides the namespace prefix.
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#list = yes
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# Namespace handles its own subscriptions. If set to "no", the parent
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# namespace handles them (empty prefix should always have this as "yes")
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#subscriptions = yes
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}
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# Example shared namespace configuration
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#namespace {
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#type = shared
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#separator = /
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# Mailboxes are visible under "shared/user@domain/"
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# %%n, %%d and %%u are expanded to the destination user.
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#prefix = shared/%%u/
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# Mail location for other users' mailboxes. Note that %variables and ~/
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# expands to the logged in user's data. %%n, %%d, %%u and %%h expand to the
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# destination user's data.
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#location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
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# Use the default namespace for saving subscriptions.
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#subscriptions = no
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# List the shared/ namespace only if there are visible shared mailboxes.
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#list = children
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#}
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# Should shared INBOX be visible as "shared/user" or "shared/user/INBOX"?
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#mail_shared_explicit_inbox = no
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# System user and group used to access mails. If you use multiple, userdb
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# can override these by returning uid or gid fields. You can use either numbers
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# or names. <doc/wiki/UserIds.txt>
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#mail_uid =
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#mail_gid =
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# Group to enable temporarily for privileged operations. Currently this is
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# used only with INBOX when either its initial creation or dotlocking fails.
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# Typically this is set to "mail" to give access to /var/mail.
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#mail_privileged_group =
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# Grant access to these supplementary groups for mail processes. Typically
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# these are used to set up access to shared mailboxes. Note that it may be
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# dangerous to set these if users can create symlinks (e.g. if "mail" group is
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# set here, ln -s /var/mail ~/mail/var could allow a user to delete others'
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# mailboxes, or ln -s /secret/shared/box ~/mail/mybox would allow reading it).
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#mail_access_groups =
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# Allow full filesystem access to clients. There's no access checks other than
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# what the operating system does for the active UID/GID. It works with both
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# maildir and mboxes, allowing you to prefix mailboxes names with eg. /path/
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# or ~user/.
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#mail_full_filesystem_access = no
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# Dictionary for key=value mailbox attributes. Currently used by URLAUTH, but
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# soon intended to be used by METADATA as well.
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#mail_attribute_dict =
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##
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## Mail processes
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##
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# Don't use mmap() at all. This is required if you store indexes to shared
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# filesystems (NFS or clustered filesystem).
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#mmap_disable = no
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# Rely on O_EXCL to work when creating dotlock files. NFS supports O_EXCL
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# since version 3, so this should be safe to use nowadays by default.
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#dotlock_use_excl = yes
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# When to use fsync() or fdatasync() calls:
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# optimized (default): Whenever necessary to avoid losing important data
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# always: Useful with e.g. NFS when write()s are delayed
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# never: Never use it (best performance, but crashes can lose data)
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#mail_fsync = optimized
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# Locking method for index files. Alternatives are fcntl, flock and dotlock.
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# Dotlocking uses some tricks which may create more disk I/O than other locking
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# methods. NFS users: flock doesn't work, remember to change mmap_disable.
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#lock_method = fcntl
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# Directory in which LDA/LMTP temporarily stores incoming mails >128 kB.
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#mail_temp_dir = /tmp
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# Valid UID range for users, defaults to 500 and above. This is mostly
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# to make sure that users can't log in as daemons or other system users.
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# Note that denying root logins is hardcoded to dovecot binary and can't
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# be done even if first_valid_uid is set to 0.
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#first_valid_uid = 500
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#last_valid_uid = 0
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# Valid GID range for users, defaults to non-root/wheel. Users having
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# non-valid GID as primary group ID aren't allowed to log in. If user
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# belongs to supplementary groups with non-valid GIDs, those groups are
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# not set.
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#first_valid_gid = 1
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#last_valid_gid = 0
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# Maximum allowed length for mail keyword name. It's only forced when trying
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# to create new keywords.
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#mail_max_keyword_length = 50
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# ':' separated list of directories under which chrooting is allowed for mail
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# processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar too).
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# This setting doesn't affect login_chroot, mail_chroot or auth chroot
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# settings. If this setting is empty, "/./" in home dirs are ignored.
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# WARNING: Never add directories here which local users can modify, that
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# may lead to root exploit. Usually this should be done only if you don't
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# allow shell access for users. <doc/wiki/Chrooting.txt>
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#valid_chroot_dirs =
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# Default chroot directory for mail processes. This can be overridden for
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# specific users in user database by giving /./ in user's home directory
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# (eg. /home/./user chroots into /home). Note that usually there is no real
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# need to do chrooting, Dovecot doesn't allow users to access files outside
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# their mail directory anyway. If your home directories are prefixed with
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# the chroot directory, append "/." to mail_chroot. <doc/wiki/Chrooting.txt>
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#mail_chroot =
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# UNIX socket path to master authentication server to find users.
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# This is used by imap (for shared users) and lda.
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#auth_socket_path = /var/run/dovecot/auth-userdb
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# Directory where to look up mail plugins.
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#mail_plugin_dir = /usr/lib/dovecot
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# Space separated list of plugins to load for all services. Plugins specific to
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# IMAP, LDA, etc. are added to this list in their own .conf files.
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#mail_plugins =
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##
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## Mailbox handling optimizations
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##
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# Mailbox list indexes can be used to optimize IMAP STATUS commands. They are
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# also required for IMAP NOTIFY extension to be enabled.
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#mailbox_list_index = no
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# The minimum number of mails in a mailbox before updates are done to cache
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# file. This allows optimizing Dovecot's behavior to do less disk writes at
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# the cost of more disk reads.
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#mail_cache_min_mail_count = 0
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# When IDLE command is running, mailbox is checked once in a while to see if
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# there are any new mails or other changes. This setting defines the minimum
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# time to wait between those checks. Dovecot can also use dnotify, inotify and
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# kqueue to find out immediately when changes occur.
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#mailbox_idle_check_interval = 30 secs
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# Save mails with CR+LF instead of plain LF. This makes sending those mails
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# take less CPU, especially with sendfile() syscall with Linux and FreeBSD.
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# But it also creates a bit more disk I/O which may just make it slower.
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# Also note that if other software reads the mboxes/maildirs, they may handle
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# the extra CRs wrong and cause problems.
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#mail_save_crlf = no
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# Max number of mails to keep open and prefetch to memory. This only works with
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# some mailbox formats and/or operating systems.
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#mail_prefetch_count = 0
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# How often to scan for stale temporary files and delete them (0 = never).
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# These should exist only after Dovecot dies in the middle of saving mails.
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#mail_temp_scan_interval = 1w
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##
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## Maildir-specific settings
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##
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# By default LIST command returns all entries in maildir beginning with a dot.
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# Enabling this option makes Dovecot return only entries which are directories.
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# This is done by stat()ing each entry, so it causes more disk I/O.
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# (For systems setting struct dirent->d_type, this check is free and it's
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# done always regardless of this setting)
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#maildir_stat_dirs = no
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# When copying a message, do it with hard links whenever possible. This makes
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# the performance much better, and it's unlikely to have any side effects.
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#maildir_copy_with_hardlinks = yes
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# Assume Dovecot is the only MUA accessing Maildir: Scan cur/ directory only
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# when its mtime changes unexpectedly or when we can't find the mail otherwise.
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#maildir_very_dirty_syncs = no
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# If enabled, Dovecot doesn't use the S=<size> in the Maildir filenames for
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# getting the mail's physical size, except when recalculating Maildir++ quota.
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# This can be useful in systems where a lot of the Maildir filenames have a
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# broken size. The performance hit for enabling this is very small.
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#maildir_broken_filename_sizes = no
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# Always move mails from new/ directory to cur/, even when the \Recent flags
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# aren't being reset.
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#maildir_empty_new = no
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##
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## mbox-specific settings
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##
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# Which locking methods to use for locking mbox. There are four available:
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# dotlock: Create <mailbox>.lock file. This is the oldest and most NFS-safe
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# solution. If you want to use /var/mail/ like directory, the users
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# will need write access to that directory.
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# dotlock_try: Same as dotlock, but if it fails because of permissions or
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# because there isn't enough disk space, just skip it.
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# fcntl : Use this if possible. Works with NFS too if lockd is used.
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# flock : May not exist in all systems. Doesn't work with NFS.
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# lockf : May not exist in all systems. Doesn't work with NFS.
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#
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# You can use multiple locking methods; if you do the order they're declared
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# in is important to avoid deadlocks if other MTAs/MUAs are using multiple
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# locking methods as well. Some operating systems don't allow using some of
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# them simultaneously.
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#mbox_read_locks = fcntl
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#mbox_write_locks = dotlock fcntl
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# Maximum time to wait for lock (all of them) before aborting.
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#mbox_lock_timeout = 5 mins
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# If dotlock exists but the mailbox isn't modified in any way, override the
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# lock file after this much time.
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#mbox_dotlock_change_timeout = 2 mins
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# When mbox changes unexpectedly we have to fully read it to find out what
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# changed. If the mbox is large this can take a long time. Since the change
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# is usually just a newly appended mail, it'd be faster to simply read the
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# new mails. If this setting is enabled, Dovecot does this but still safely
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# fallbacks to re-reading the whole mbox file whenever something in mbox isn't
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# how it's expected to be. The only real downside to this setting is that if
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# some other MUA changes message flags, Dovecot doesn't notice it immediately.
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# Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK
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# commands.
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#mbox_dirty_syncs = yes
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# Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE,
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# EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored.
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#mbox_very_dirty_syncs = no
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# Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK
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# commands and when closing the mailbox). This is especially useful for POP3
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# where clients often delete all mails. The downside is that our changes
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# aren't immediately visible to other MUAs.
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#mbox_lazy_writes = yes
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# If mbox size is smaller than this (e.g. 100k), don't write index files.
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# If an index file already exists it's still read, just not updated.
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#mbox_min_index_size = 0
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# Mail header selection algorithm to use for MD5 POP3 UIDLs when
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# pop3_uidl_format=%m. For backwards compatibility we use apop3d inspired
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# algorithm, but it fails if the first Received: header isn't unique in all
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# mails. An alternative algorithm is "all" that selects all headers.
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#mbox_md5 = apop3d
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##
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## mdbox-specific settings
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##
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# Maximum dbox file size until it's rotated.
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#mdbox_rotate_size = 2M
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# Maximum dbox file age until it's rotated. Typically in days. Day begins
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# from midnight, so 1d = today, 2d = yesterday, etc. 0 = check disabled.
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#mdbox_rotate_interval = 0
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# When creating new mdbox files, immediately preallocate their size to
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# mdbox_rotate_size. This setting currently works only in Linux with some
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# filesystems (ext4, xfs).
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#mdbox_preallocate_space = no
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##
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## Mail attachments
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##
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# sdbox and mdbox support saving mail attachments to external files, which
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# also allows single instance storage for them. Other backends don't support
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# this for now.
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# Directory root where to store mail attachments. Disabled, if empty.
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#mail_attachment_dir =
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# Attachments smaller than this aren't saved externally. It's also possible to
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# write a plugin to disable saving specific attachments externally.
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#mail_attachment_min_size = 128k
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# Filesystem backend to use for saving attachments:
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# posix : No SiS done by Dovecot (but this might help FS's own deduplication)
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# sis posix : SiS with immediate byte-by-byte comparison during saving
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# sis-queue posix : SiS with delayed comparison and deduplication
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#mail_attachment_fs = sis posix
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# Hash format to use in attachment filenames. You can add any text and
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# variables: %{md4}, %{md5}, %{sha1}, %{sha256}, %{sha512}, %{size}.
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# Variables can be truncated, e.g. %{sha256:80} returns only first 80 bits
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#mail_attachment_hash = %{sha1}
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