# 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

Cyrus IMAP 2.4 Releases