I would like to use my ISP's outgoing SMTP Relay. So in Exchange 2003, I go into the System Manager -> Connectors -> ISP SMTP Relay. I went to the properties there, then in the General tab -> "Forward all mail through this connector to the following smart hosts". I put my smtp.myisp.com adress. But where do I put the authentication credentials for this? I need to put in the username and password my ISP gave me or else this fails. How do I do this?