Igor Demjanenko napsal(a): > Hi, > > Try this: > > iptables -t nat -A PREROUTING -p tcp -d old_mailserver_ip > --destination-port 25 -j DNAT --to-destination 127.0.0.1:25 > Try: iptables -t nat -A PREROUTING -p tcp -d old_mailserver_ip --destination-port 25 -j DNAT --to-destination 127.0.0.1 Please do note ":25" missing. David