We recently had a technician upgrade our Exchange Server 2003 to Exchange Server 2010. The upgrade went smoothly for all mailboxes and phones.
However, since the upgrade new phones running android can't open the mail box. The phones that were previously set up connect and display the mail fine. New phone or replacement phones connect to the server because if we use the wrong password we get an error. If we use the correct password, the mail application opens but has a loading message that never goes away. I have left my overnight and it never loads.
Again, this only happens on new phones. The phones that were exisiting during the migration can be disconnnected and reconnected without any issues.
Is this a security setting on the exchange server that is preventing the new devices?