My new client has an Exchange 2007 servers in a Windows 2008R2 domain, but the domain is operating at Windows 2003 operational level. This domain has a 2 way trust with another 2003 domain, and that has a 2003 Exchange server in it. The user mailboxes have been moved from the Exchange 2003 server to the 2007 server. However the user accounts remain in the 2003 domain.
The problem that they are having is that Active Sync is not working for their cell phones. Can anyone tell me why this is and how to correct it please.