Hello, I need help with Sendmail relaying to Exchange. Everytime I try to send something to my domain, I get a reply that the User is Unknown. I am using Redhat 9 and using the latest SendMail. Right now i am doing a "tail -f /var/log/maillog" and I see the messages hitting my SendMail server and they automatically get the error message "User Unknown". They don't even get the chance to hit my exchange server.