Hi, I'm unable to send emails or reply to emails. I keep getting a window pop up that says ''''''Add Security Exception'''''' Then after I close that the following message comes up Sending of message failed Unable to communicate securely with peer requested domain name does not match the server's certificate The configuration related to must be corrected. I have no idea what all this means. It's only just started happening since I did a Thunderbird upgrade. I hope you are able to help me please? My apologies but I'm unable to attach screenshot pictures. Thank you for your time. Kind Regards Jen