iOS7 won't connect to Exchange 2010
Since staff have started upgrading to iOS7 I've been getting a steady stream of reports that email from our on-premises Exchange is not coming through to their phone any more.
I've seen the problem first hand and the symptom immediately after upgrade is that it simply fails silently - no new mail comes through and if you try to send it just sits unsent without popping up an error. If I remove the account and re-add it, the credentials pass validation when entered but any attempt to check mail results in a vague error message about not being able to connect to the server. This happens on wifi and 3G, so not wireless related, and other EAS clients are working fine.
There's a thread on the Apple forums here: https://discussions.apple.com/thread/5322387. Appears to be lots of conflicting information on it, so before I start throwing supposed solutions at my server I was wondering if anyone else has been dealing with similar issues?
Exchange server is currently on 2010 SP2, update rollup 7.