Answer
[28/Jan/2011 01:08:16] Last message repeated 304 times [28/Jan/2011 01:08:16] SQLiteDb.cpp: SQLiteDb::execDML - SQLite error: file /Volumes/KerioMailStore/mail/jandm.com/deanna/.journal.db, code 10, error SQLITE_IOERR[10]: disk I/O error
journal.db contains important information for synchronization of various clients. The log says, that the server wasn't able to open the file. Can you see the file in your message store? If not, the server cannot create it for some reason - does the server run as root? check filesystem access rights, check disk space.
If yes, the server cannot read the file - again check the filesystem access rights. If they are correct try to move the file out of the way. A new one should be created. In that case the user may experience troubles synchronizing offline clients (MS Entourage, MS Outlook 2011 for Mac, Kerio Outlook Connector offline edition, etc.) and it may be necessary to recreate his/her profile.