Iphone Exchange account verified but does not work

We recently moved the physical location of our exchange server to a new internal and external IP address. The move was a complete success with one exception... our IPhones no longer sync with the server.

I have just set up a new account on an iphone to sync with my email account on Exchange. The setup on the phone works perfectly and the phone verifies the account and allows you to select your syncing options. However, the account does not work. Calendar, contacts and email are not in the phone and I cannot send outgoing emails. Any thoughts?
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JP_TechGroupAsked:
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Mandeep KhalsaCommented:
Try out this ... https://www.testexchangeconnectivity.com/
It will point out any errors there might be and how to fix them.
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Alan HardistyCo-OwnerCommented:
Please have a read through my Exchange 2003 / Activesync article and check your settings / configuration:

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_1798-Exchange-2003-Activesync-Connection-Problems-FAQ.html
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Glen KnightCommented:
Did you update all the A records in your external DNS with your new IP address?

You may have to remove any activesync accounts from the iPhone cycle the power and then setup you activesync account again and see if this helps.
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Alan HardistyCo-OwnerCommented:
Also worth noting that mobile phone providers usually take about 24 hours before they update their cached records, so it may kick in again after a day has passed.

To verify, change the servername used on your account settings to your new IP address - it should sync happily.
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JP_TechGroupAuthor Commented:
Recreated the Exchange-OWA and removed headers. Fixed the issue.
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Alan HardistyCo-OwnerCommented:
For the benefit of others finding this post, the author's closing comment was:
"Recreated the Exchange-OMA and removed headers. Fixed the issue."
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