I have been using exchange server 2000 for a year sending all outbound email through an SMTP connector to SBCGLOBAL.NET with no problems. This last week they changed their protocol to use SMTP with SSL and Authentication to SMTP.ATT.YAHOO.COM. My system stopped working. I have tried to reconfigure the exchange server with no luck. I have a valid account on the yahoo server. When email is sent I receive no errors that I can find and the email just disappears. Can anyone help me here?