We have an Exchange 2003 server with BlackBerry Professional 4.1.4 - only two users currently have BlackBerry devices, working fine. We're installing a new Server 2008 machine with Exchange 2007 SP1. We've moved one of the mailboxes across to the new server, and it shows up in BlackBerry Manager as being on the new server, but it doesn't receive, and if you send from it, it sends okay but doesn't arrive at the destination.
We've restarted all BlackBerry services and the handheld itself.
What steps do we need to take to make the device communicate again?