Can anyone help me with this issue?

The CEO of our company keeps getting IMAP time out errors and “mailbox is in an inconsistent state” messages. He uses Outlook 2003.

There are errors on the server side. This is what it says:

“Jun 19 08:08:34 burmail imap(ed): Corrupted binary tree file /home/ed/mail/.imap/INBOX/.imap.index.tree: UID to be inserted isn't hi

gher than existing (2 <= 504)”

Can someone tell me what that means?? I have been assigned to take over for a departed sys admin and have never used or administered Dovecot before.

Thank You!

Patrick