We are using Exchange 2010 and iPhone 5s.
One day one user informed me that his inbox is not syncing with Exchange. This is very weird.
I tired retart the mobile, delete the account and readded, nothing works. The very strange thing about this is, all users sub folder is there and perfectly synced... only Inbox is total blank. And It get a error message that said: Connection Failed... I mean this only apply to the inbox, other sub folders works fine...
Any idea what is the problem?