wrote:

We have a mixed exchange/imap environment. On a couple of the
computers any email sent arriving in the exchange account end up in
the imap inbox. On others this doesn't happen. I've checked the
config, it seems correct. Any ideas?

This simply cannot happen unless 1) you're referencing the Exchange mailbox
via an IMAP account or 2) you have a rule that is moving the incoming
messages to the IMAP server. Exchange and IMAP accounts always have
separate data stores.
--
Brian Tillman