I've got a question about windows phone 7 and an exchange account. I've got a corporate exchange from work. First we had our exchange server activesync service only working local in our corporate network. What I did was configuring my exchange account on my windows phone to use as server mail.domain.com. In addition, I need to say that we have a self-signed certificate. I installed that certificate on my phone, rebooted and then it worked.
Now we opened our firewall for the activesync service. That means that I access the exchange server by a public IP adress. If I enter this public IP adress in my windows phone in the exchange account settings, I'm getting an error message: Error 80072F06 "There is a problem with the certificate for <ip adress>" (where <ip-adress> is my public ip). If I reinstall that certificate from the public IP, it does not change anything, still not working. I already tried to reboot, but that didn't help either. Does anyone have a solution?