Since I cannot find a way to send this message to the Thunderbird crew, I am hoping that whoever receives this at Firefox will forward it to the appropriate person. Thunderbird suddenly produces the following error message for every outgoing email I try to send. The message is: "An error occurred while sending mail: The mail server sent an incorrect greeting: Service not available." All incoming emails come through with absolutely no issues. The outgoing emails are the problem. I'm assuming this outgoing email issue is due to a bug in the latest version of Thunderbird and can be fixed quickly. My Thunderbird updated a day or two ago and the client worked fine until this afternoon. Thank you. Laurie Selwyn ([email protected])