Am 22.11.2010 16:11, schrieb Robert Moskowitz: > By default, sendmail only listens on the localloop: > > DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl > > But by default to allow sendmail to even work the iptables entry is: > > -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j > ACCEPT > > Without this, sendmail can't even connect to localloop. No, that is not correct. You miss to see the following rule -A RH-Firewall-1-INPUT -i lo -j ACCEPT in the default /etc/sysconfig/iptables config file. So there is no problem where you see one. > But should I > handedit this line to something like: > > -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp -d 127.0.0.1 > --dport 25 -j ACCEPT > > And once you handedit iptables, you can't use the gnome firewall applet, > I suspect... Alexander