Mail can't identify the identity of the server "mail.yourdomain.com"
The certificate of this server is invalid. You might be connecting to a server that is pretending to be "mail.yourdomain.com" which could put your confidential information at risk.
If you are receiving an error in your email client that is something like the one above you need to make sure the incoming and/or outgoing host/server names and the rest of your SSL Setting are setup correctly based on your SSL setting in your hosting area.
Here is the link to the FAQ regarding email settings. Give it a try and if you need further assistance, give us a call.
