Hi, is the replication between a 2.3.16 master and a 2.4.6 slave supported? Here, sync_client fails always with 'Error from send_lock(): bailing out!'. Network trace shows | > LOCK | < BAD IMAP_PROTOCOL_ERROR Unrecognized command Replication worked fine between two 2.3.16 servers. Enrico ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/