<snip> > Never (if you aren't guru) edit your iptables by directly editing your > config. Always use iptables binary. > > It is said there... -t option shouldn't be on that line. The line should > be only > -A PREROUTING -p tcp --dport 26 -j REDIRECT --to-port 25 > because you're already in the *nat section of the config. > > But again, you should enter this command instead of editing the config: > iptables -A PREROUTING -t nat -p tcp --dport 26 -j REDIRECT --to-port 25 Thanks Tomas and Christopher