I have a few user accounts and mailboxes on Exchange 2010 that have been moved from Exchange 2003 and email with iphones work fine, however after a move from 2003 to 2010 with the next mailbox I cannot get emails to work withthe iphone, although email is working within the Outlook client. The mailbox does have Exchaneg Active Sync enabled. Any thoughts?
Also, for ALL mailboxes on 2010 OWA and Outlook anywhere does not work.
99% of the company mailboxes are still on Excchange 2003 and working fine.