Redhat IMAP server closed connecton to Outlook IMAP client

[Reuben D. Budiardja]

Hi,
One of my user uses MS Outlook as IMAP client, connecting to my IMAP server. 
We're having this problem that I have verified by trying the outlook myself. 
I've never used outlook before and this problem does not happen, as far as I 
can tell, with my other IMAP client.

When I left the MS Outlook idle for a while, it will then display this 
message:
"Your IMAP server has closed the connection. This may happen if you have left 
the connection idle for too long." Then when I click "details", it says 
something like "Lost mailbox lock".

I tried the same MS Outlook  to connect to another IMAP server that I have 
account in (but the server is not mine) and left it idle overnight and the 
problem does not happen. My user also says that this does not happen with 
other IMAP account that he has.

So I am suspicious that there's something in my IMAP server configuration that 
cause this. The IMAP server is RHEL 3, running the stock IMAP package, and I 
didn't change any configuration. Basically all I did it changed "disabled = 
no" in /etc/xinetd.d/imaps (we're running IMAP over SSL). 

Any help in resolving this problem will be appreciated. 

Thanks in advance.
RDB
-- 
Reuben D. Budiardja
Department of Physics and Astronomy
The University of Tennessee, Knoxville, TN
---------------------------------------------------------
"To be a nemesis, you have to actively try to destroy 
something, don't you? Really, I'm not out to destroy 
Microsoft. That will just be a completely unintentional 
side effect."
                 - Linus Torvalds -