After upgrading to version 81, I now am unable to send email. I receive email without problems but when sending I get the error message "Sending message error. Peer reports incompatible or unsupported protocol version. The configuration related to smtp.goldenwest.net must be corrected." On another computer running Thunderbird version 68, everything works fine, no issue with sending email. I don't know where to go or what to do to fix this.