Ok, here's the scenario:
1 CAS-only server - CASSVR
1 CAS/mbox server - MBOX
1 2003 Mailbox server - E2003
If I connect to CASSVR with the /EXCHANGE path, I can open up mailboxes that are on the E2003 server, but if I try and access a mailbox on the MBOX server, after I authenticate, I get an...