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Thanks, in the end we discovered there was a change to our external DNS provider.
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Hello- our Exchange 2010 has suddenly stopped pushing email out to iphones and ipads, there is no mail flow at all to these devices unless they are on company wireless network. &nbsp;What are some things to look at?
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Hello- our Exchange 2010 has suddenly stopped pushing email out to iphones and ipads, there is no mail flow at all to these devices unless they are on company wireless network.  What are some things to look at?

exchange email not synching with mobile device on cellular

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.