Hello. I'm not 100% of the precise solution but I know the network admin guy mentioned something about installing ActiveSync. Something about going to the Exchange Mobile Services Properties and adding exceptions for each iPhone/iPad user.
Then, allow access to exchange ACTIVESYNC
a) Open Active Directory Users and Computers.
b) Find and open the user’s account information.
c) Click the Exchange Features tab and enable both User Initiated Synchronization and Up-to-date Notifications.
Then, add the users to the ActiveSync group in Active Directory.
Then, if you want to back up the iPhone to your PC with iTunes, install iTunes, hook up the iPhone and configure it to connect to email via iTunes.
Finally,go to the iPhone, Settings, Mail, etc. and configure the Exchange account there.
That all I have. Sorry I can't be more help, but let me know if I gave you a clue.