Hi Niels, thank you for your reply. I am using cyrus from sources (ports). root@mail:/var/imap# find . -name "*.db" -exec file '{}' \; ./mailboxes.db: Cyrus skiplist DB ./annotations.db: Cyrus skiplist DB ./db.backup1/annotations.db: Cyrus skiplist DB ./db.backup1/mailboxes.db: Cyrus skiplist DB ./tls_sessions.db: Berkeley DB (Btree, version 9, little-endian) ./db.backup2/annotations.db: Cyrus skiplist DB ./db.backup2/mailboxes.db: Cyrus skiplist DB ./deliver.db: Berkeley DB (Btree, version 9, little-endian) So, I can convert tls_sessions and deliver db to skiplist format, right? How can I determine which database is giving me "DBERROR: critical database situation"? Thank you ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus