I'm running FC1, Postfix, and using a NAT router. I just moved the machine to a different ISP. In contrast to the old ISP, the new ISP requires SMTP authentication with username and password. 1. Is there a place in Postfix where I can enter the authentication info? There *IS* a place to enter the smarthost, but I don't see where I can enter the auth info. 2. Interestingly, when you run config.pl to setup SquirrelMail, there is a place to enter authentication *mode*, e.g. "none", "login" and others, but then it doesn't ask for or provide a place to enter username and password. Can someone please shed some light on these issues? I don't do my own DNS, MX records etc, but I need Postfix to be able to send mail using the smarthost. Thanks - John
