Expire messages and duplicate delivery database entries
cyr_expire [ -C config-file ] [ -A archive-duration ] [ -D delete-duration ] [ -E expire-duration ] [ -X expunge-duration ] [ -p mailbox-pre‐fix ] [ -u username ] [ -t ] [ -v ] [ -a ] [ -c ] [ -x ]
cyr_expire is used to run a number of regular maintenance tasks on Cyrus databases, specifically:
- expire messages from mailboxes, and
- expire entries from the duplicate delivery database, and
- cleanse mailboxes of partially expunged messages (when using the “delayed” expunge mode), and
- remove deleted mailboxes (when using the “delayed” delete mode), and
- expire entries from conversations databases, and
- archive messages from mailbox.
There are various annotations that cyr_expire respects:
/vendor/cmu/cyrus-imapd/expirewhich controls the expirations of messages
/vendor/cmu/cyrus-imapd/archivewhich controls the archival of messages
/vendor/cmu/cyrus-imapd/deletewhich controls the deletion of messages
These mailbox annotations specify the age(in days) of messages in the given mailbox that should be expired/archived/deleted.
The value of the
/vendor/cmu/cyrus-imapd/expire annotation is
inherited by all children of the mailbox on which it is set, so an
entire mailbox tree can be configured by setting a single annotation on
the root of that tree. If a mailbox does not have a
/vendor/cmu/cyrus-imapd/expire annotation set on it (or does not
inherit one), then no messages are expired from the mailbox.
Expiration of duplicate delivery database entries for a given mailbox
is also controlled by the
which applies to that mailbox. A value of 0 on the annotation means
that no expiration is to be performed on that mailbox. Unlike message expiration, if no
annotation applies to the mailbox then duplicate database entries are
expired using the value given to the -E option.
Expiration of conversations database entries occurs if the conversations option is present in imapd.conf(5). Expiration can be disabled using the -c option. The period used to expire entries is controlled by the conversations_expire_days option in imapd.conf(5).
cyr_expire reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C.
cyr_expire requires at least one of -A -D -E -X or -t to be supplied.
Use the specified configuration file config-file rather than the default imapd.conf(5).
Archive non-flagged messages older than archive-duration to the archive partition, allowing mailbox messages to be split between fast storage and slow large storage. Only does anything if
archivepartition-*has been set in your config. This value is only used for entries which do not have a corresponding
This feature was introduced in version 3.0.
Remove previously deleted mailboxes older than delete-duration (when using the “delayed” delete mode). The value can be a floating point number, and may have a suffix to specify the unit of time. If no suffix, the value is number of days. Valid suffixes are d (days), h (hours), m (minutes) and s (seconds). This value is only used for entries which do not have a corresponding
Prune the duplicate database of entries older than expire-duration. This value is only used for entries which do not have a corresponding
/vendor/cmu/cyrus-imapd/expiremailbox annotation. Format is the same as delete-duration.
Expunge previously deleted messages older than expunge-duration (when using the “delayed” expunge mode). Format is the same as delete-duration.
Do not expire conversation database entries, even if the conversations feature is enabled.
This feature was introduced in version 3.0.
Do not expunge messages even if using delayed expunge mode. This reduces IO traffic considerably, allowing
cyr_expireto be run frequently to clean up the duplicate database without overloading the machine.
Only find mailboxes starting with this prefix, e.g. “user.justgotspammedlots”.
Remove any user flags which are not used by remaining (not expunged) messages.
Enable verbose output.
Skip the annotation lookup, so all
/vendor/cmu/cyrus-imapd/expireannotations are ignored entirely. It behaves as if they were not set, so only expire-days is considered for all mailboxes.
cyr_expire -E 3 -D 60 -X 60
Purge duplicates database of all entries older than 3 days, remove deleted mailboxes older than 60 days and deleted messages older than 60 days.
cyr_expire -x -c -A 7d
Perform migration of message older than 7 days to Archive partition whilst not altering conversation database nor expunging messages.
Archive partition and conversation support was first introduced in Cyrus version 3.0.