Steve Rigler wrote on Mon, 20 Aug 2007 10:56:28 -0500:
In your case, I'd bet that sendmail is probably only configured to listen on lo.
That's at least the default in CentOS 5, I don't remember how CentOS 4 handled this. You have to put a variable in /etc/sysconfig/sendmail, but I don't know which one as I always compile my own sendmail.cf.
Kai