For the last several years, I have used gmail as my main mail reader and had gentoo dev email fetched via pop/imap over SSL and deposited into a dedicated folder. This stopped working a couple days ago, and I finally got interested enough to track down the cause. Apparently our gentoo mail server uses a self signed certificate for incoming pop/imap connections. Google will no longer honor that. Details: Fri, Dec 14, 2012 at 5:06 PM SSL Security Error. [ Help ] Server returned error "SSL error: self signed certificate in certificate chain" As of December 2012, Gmail uses "strict" SSL1 security. This means that we'll always enforce that your other provider's remote server has a valid SSL certificate. We made this change to offer a higher level of security to better protect your information. http://support.google.com/mail/bin/answer.py?hl=en&answer=21291&ctx=gmail#strictSSL
In the meantime, you can still forward mail there just the same.
The certificate is NOT self-signed. We use CACert as our preferred vendor. This is not going to be changing soon.
