Using External IMAP Server

[Bezaleel Support]

Hi list,

I have searched Google for a bit, but haven't fully satisfied myself 
with an answer.

We are looking at setting up an internal server for kolab at our church. 
We already use an IMAP/POP3 server for email. That server runs 
qmail-imap (I believe). Can we use this IMAP server and accounts rather 
than setting up cyrus-imap under kolab?

Thanks,
Kevin L.