Sam Drinkard wrote on Sun, 06 Nov 2005 11:41:10 -0500:
Really, it's rather dumb to me, that having a MTA that does not listen on port 25 out of the box.
It *does* listen there, just that it restricts itself to 127.0.0.1 ;-) That's a security measure that most distributions introduced years ago. F.i. I have been using Suse before CentOS and they do it the same. Suse controls the sendmail.cf in their /etc/SuSEconfig/sendmail file where you can specify to listen on external IP as well or to not touch the sendmail.cf at all, etc. I don't know if Red Hat-based systems have something similar, it's possible that you can put that configuration option in the /etc/sysconfig/sendmail file as well (once you know the syntax - is there documentation about all sysconfig options somewhere?).
Kai