TMG Setup for DPM Communication
December 18th, 2010
This video covers troubleshooting DPM communication to and from a TMG server. In the video we verify that we have connectivity, then we break the communication between the two and walk through the steps needed to be performed on the TMG server in order to allow successful communication once again to the TMG server.
We cover:
- Creating a custom protocol definition to include specific UUID’s for DPM.
- The other domain ports needed for successful traffic.
- Creating the allow rule specifying the new custom protocol definition as well as the other needed ports.
- Enabling RPC filter.
- Disabling enforce strict RPC compliance.
We then verify that the communication is successful once again after our changes are applied.

Enjoy!
source
http://blogs.technet.com/b/dpm/archive/2010/12/06/new-video-tmg-setup-for-dpm-communication.aspx