I think I got a solution to for my problems with Cyrus 2.0.x. I
noticed that imapd would stop responding when there was a lot of mail in
the queue. During the delivery of lots of mail the imapd would stop
accepting connections. Delivery would stop. After changing postfix to
spawn not more than 2 deliver processes at a time things seem to be quite
stable. It seems that the 'thundering herd' of deliveries would bring
things to a halt.
...Jeff
