Hi - we're noticing that Domain Mapping seems to be conflicting with password protected posts. We're getting a redirect error on any site that is actually using a mapped domain and a password protected post (works fine without a mapped domain).
One thing we're seeing is that it's trying to use wp-login.php?action=postpass via HTTPS however mapped domains on our setup do not have SSL certificates.
We have the login pages set to use the original domain, and we are forcing SSL on both LOGIN and ADMIN pages.
Any thoughts? I've seen a few posts about this in the forums but none of them give a definitive fix or solution.