iPhone and Exchange 2010

We have an exchange 2010 server. Connecting to it with outlook works fine. If we try with a iPhone it will create connection but when you go to inbox no email will show up.
Wondering if any one has seen this before?
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what version of iphone you are using?
DaveKall42Author Commented:
5 and 6.
have you setup the throttling policy on exchange correctly?
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DaveKall42Author Commented:
Haven't done anything to throttling except what is default.
then further you will need to check the IIS logs to further troubleshoot the issue, more information can be retrieved from the IIS logs
DaveKall42Author Commented:
Nick RhodeIT DirectorCommented:
ActiveSync is enabled for the user on their mailbox right?
DaveKall42Author Commented:
I will have to look. It might not be as these are new users. Would this be in AD u&c?
it activesync is not enabled connection will not also establish from phone to server.  I suggest you to kindly remove the account from the device and then restart and reconfifure the account. Kindly refer

Nick RhodeIT DirectorCommented:
You can open up the EMC (Exchange Management Console).  

Go to Recipient Configuration > Mailbox

Right-click the Mailbox for the user and select properties

Click on Mailbox Features Tab

Should be able to see everything that is enabled for the user (POP, MAPI, Archive, OWA, ActiveSync)

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DaveKall42Author Commented:
Exchange active sync is enabled. I also just tried this on an android and it didn't work at all. Outlook externally works fine though.
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