I've gone through the adding procedure and it all verifies and looks good there. However, it will not receive or send any mail (nor sync up contacts/tasks, etc). It's just throwing the terribly ...
I have ActiveSync enabled on my Exchange 2007 server, and it works just fine with all the other iPhones (4S and below) in the office. However, I have two users who have just gotten iPhone 5s, and ...