Cyrus IMAP 2.4.3 Release Notes
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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

Cyrus IMAP 2.4 Releases
