I have 3 htc phones and a treo 700wx. I also have an exchange 2007 server I'm trying to get activesync ota running. The htc 6800 and 6900's work peachy. I have not yet tried the 6700 but should work as it has been upgraded to wm6.
Anyway, the problem is, I manually installed both the valicert and the godaddy cert on the 700wx. In the ie browser to
https://mail.myserver.net/owa (name changed to protect the innocent) it gives a ssl message of
the certificate was issued by a company you have not chosen to trust
the certificate date is valid
the certificate has a valid name matching the name of the page you are trying to view.
When setting up activesync I get the error message of "the security certifate on the server is invalid. contact your exchange server administrator or isp to install a valid certificate on the server. Support code 0x80072F0D
more details available on request.