[Dovecot] Troubleshooting help

[Paul Michael Reilly]

Somehow, hopefully to be determined, I got my Thunderbird/dovecot
Fedora Core 3 configuration into a real snit, such that I can no
longer access my INBOX.

When Thunderbird tries to get the INBOX content (or get new mail) it
reports "The current command did not succeed.  The mail server
responded: Invalid messageset: -2147483648:*."  Scouring logs and
googling has come up empty.  Now I'm flailing at trying to get to a
state that this problem does not exist.  I'd like to understand how
this situation arose and how to deal with it better if it happens to
any other users on my mail server.

Thanks,

-pmr