We deployed Zimbra a little over a month ago. It runs fine for about 2 weeks and then the Mailbox process stops. I scoured the logs and the only two lines I could find that indicated something are these:
May 19 00:30:03 server zimbramon: 30374:info: 2006-05-19 00:30:01, STATUS: server.domain.com: mailbox: Stopped
2006-05-19 00:29:40,012 FATAL [ImapSSLServer-52239]  system - Fatal error occurred while handling connection
java.lang.OutOfMemoryError: Java heap space
I did a zmcontrol stop and then zmcontrol start and everything is running fine. This is the second time this has happened, and I would like to prevent it from occuring one way or another.