Issue: Lync URL filtering policy blocks Lync Mobile Push notifications

You might run into this issue when setting up Lync 2010 for mobile clients. The Lync 2010 URL filter (CU4) blocks push notification SIP messages. There is a Knowledge Base article explaining the issue here KB2664650

Example using the Test-CsMcxPushNotification cmdlet

Error text:
Test-CsMcxPushNotification : The operation failed because of a server policy. The warning property may contain more information for the failure.
At line:1 char:27
+ Test-CsMcxPushNotification <<<<  -AccessEdgeFqdn edge.lab.com
    + CategoryInfo          : OperationStopped: (:) [Test-CsMcxPushNotification], ServerPolicyException
    + FullyQualifiedErrorId : WorkflowNotCompleted,Microsoft.Rtc.Management.SyntheticTransactions.TestMcxPushNotificationCmdlet

You will see this error in Lync logging

This is when the IM URL filtering policy is on and blocking http/https

The same issue affects to OCS 2007 R2 Edge Servers

The workaround for now is to remove http and https from the filtering. this can be done in the Lync Control Panel or with the following PowerShell commands:

• Set-CsImFilterConfiguration -Identity XXXX -Prefixes @{remove="http:"}
• Set-CsImFilterConfiguration -Identity XXXX -Prefixes @{remove="https:"}

In the above commands if your IM filters are set at the global level use –identity global

Obviously this limits the filtering heavily, as it will allow the most likely way users will paste URL’s to be sent i.e. “www.microsoft.com” will fail but “http://microsoft.com” will now be allowed.This issue will be fixed with a future patch.