Push notification messages are not delivered to Lync mobile clients where URL filtering for IMs is enabled
Just quick heads-up, fellow MVP Tom Arbuthnot ran across an issue whereby Office Communications Server 2007 R2 or Lync Server 2010 Edge Servers URL filtering for IMs disrupts push notifications for both iOS and Windows Phone 7 clients. This is caused by:
Taken from Microsoft KB2664650
The Lync Server 2010 Mobility service sends SIP messages that contain active hyperlinks in their Message-Body header that define the XML namespace information for the push notification to the Lync Server Push Notification service.
Lync Server 2010 Front End Pool Using the URL Filter page in the IM and Presence group in Lync Server Control Panel to enable the Hyperlink prefix option Send warning message, will precede the active hyperlink with a user defined warning message in the SIP packet that contains the push notification message. The Lync Server Push Notification service will reject the modified push notification information and send an error response back to the Lync Server 2010 Mobility service.
Office Communications Server 2007 R2 Access Edge server Using the URL Filter tab of the Office Communications Server 2007 R2 Intelligent IM Filter dialog to:
- Allow instant messages that contain hyperlinks, but convert the hyperlinks to plain text
- Allow instant messages that contain hyperlinks. Enter a warning that you want to insert at the beginning of each containing hyperlinks
Will precede the active hyperlink with a user defined warning message and convert the active hyperlink to text by preceding it with an underscore or precede the active hyperlink with a user defined warning message in the SIP packet that contains the push notification message. The Lync Server Push Notification service will reject the modified push notification information and send an error response back to the Lync Server 2010 Mobility service.
For workarounds and more information refer to the Microsoft KB now live here
