As of December 12th 2012, Google is no longer allowing secure connections to servers with self signed SSL’s. This simply means if a client checks a cpanel email account from gmail, (assuming they have forwarding setup) they may run into errors stating the SSL connection is not allowed. There appears to be two fixes, either turn off “Always use a secure connection” or buy a host ssl.
Below is a link to the article from Gmail:
http://support.google.com/mail/bin/answer.py?hl=en&answer=21291&ctx=gmail
