===============================
Cyrus IMAP 2.4.21 Release Notes
===============================

* Fixed :issue:`885`: timsieved segfault (thanks Christian Henz)
* Fixed :issue:`2199`: better recovery from mupdate failure (thanks Michael
  Menge)
* Fixed: sync_client now replicates annotations in user/mailbox mode (thanks
  John Capo)
* Fixed: build failure with LibreSSL 2.7 (thanks Bernard Spil)
* Fixed: XFER now correctly distinguishes between 2.3.x releases
* Fixed :issue:`3123`: XFER now recognises 3.1, 3.2 and 3.3 backends
* Fixed: XFER now syslogs a warning when it doesn't recognise the backend
  Cyrus version

:ref:`imap-release-notes-2.4`
