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==============================
Cyrus IMAP 2.4.3 Release Notes
==============================
Changes to the Cyrus IMAP Server since 2.4.2
* Many fixes to replication edge case handling
* Added missing flags to reconstruct
* Replicate DELETED.user folders in sync_client -u (matches XFER behaviour now)
* Make sync_client only connect after forking in rolling mode. Fixes two things - ssl crashes due to shared resource conflicts, and also means master will start up even if the replica is not contactable
* Fixed crash on cyr_expire and ipurge annotation based expiry
* Many XFER fixes for compatibility across versions:
* allowing XFER in from delayed_expunge mailboxes
* allowing XFER back all the way to Cyrus 2.2.12. This was accomplished by adding logic that can generate backwards-compatible older version indexes, and version detection from the imapd banner.
* correctly fixing seen information for sub-mailboxes on XFER in
* Multi-target replication. Strictly this is a new feature - there was a broken implementation in 2.4.0, which is how this snuck in to the bugfix release. It's not super-well documented yet, but it works by creating a separate log file for each destination "channel", and then running one sync_client process per channel, so replication can fall behind on one without affecting replication to the other.
* Fixed some crashes and errors which occured when upgrading and opening corrupted mailboxes
* Modified AFS ptloader configure options to allow building on more modern systems
:ref:`imap-release-notes-2.4`
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