Recently a customer Exchange 2007 migrated to 2010, there was a problem, some of the mobile phone mailbox is not available, after testing found the following problems:
The test of the FolderSync command failed.
An HTTP 403 Forbidden response is received. The response appears to have come from IIS7. Body of the response: <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 strict//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" >
< HTML xmlns= "http://www.w3.org/1999/xhtml" >
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Next, run test-activesyncconnectivity to test and discover FolderSync failed.
Solution:
Next, open EMC, organization configuration-Client Access-exchange ActiveSync mailbox policy, delete the existing policy, and then create a new mailbox policy, set the following settings, and check the devices that are not allowed to be set.