As per comment #19, I tested pidgin. It gave an equivalent error about not being able to validate the certificate, see screenshot
** Attachment added: "Pidgin Certificate Verification Failure" https://bugs.launchpad.net/ubuntu/+source/empathy/+bug/640018/+attachment/1813699/+files/Screenshot-SSL%20Certificate%20Verification.png -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to empathy in ubuntu. https://bugs.launchpad.net/bugs/640018 Title: empathy throws untrusted certificate warning on google chat services using google apps (non-google domains) -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
