I'm baffled here. I have a client with a brand new fully patched Exchange 2003 + BES 4.1.3.16 and the users who are using BES are constantly losing the Send As for the BESAdmin user. They are not in any administrator group. It's 5 users in 2 separate
OUs off of another OU. They activate, sync, get all mail, calendar, contacts, etc. Sending mail is does not work though. All 5 users get "...