We purchased SSL certificate from GoDaddy.com recently, we installed this certificate per their instructions. We can use this SSL certiciate for OWA access, and Outook Anywhere access without problem when Require Secure Channel (SSL) option is enabled.
But when this option is enabled, iPhone mobile client cannot reach the server.
If we turn off this option, iPhone can connect to Exchange no problem. The SSL option can be turned on or off, no matter. but this is not what we want. We want all connection to be secured.
This problem does not happen when we use our own self signed SSL certificate.