I have been trying to do this for a few weeks now with my HTC 8525 that is running 17745.0.2.3, but I keep running into the problem that the certificate options are greyed out.
After selecting my certificate in the ActiveSync setup and then clicking select, I get taken right back to the security options screen where "Encrypt all outgoing e-mail messages" and "Sign all outgoing e-mail messages" are greyed out.
I have two 8525's running the same firmware, and I have had this problem on both and can't figure it out for the life of me. Is it possible that the build of WM6 that I'm using is missing some certificate extensions, or something along those lines?
Thank you, looking forward to your response.