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 first last wrote: > Hi, > > I am trying to set up a firewall rule so calls to old_mailserver:25 get > redirected to localhost:25. I have seen quite a few rules and none seem > to work. > > I have tried with the firewall enabled (configured to allow smtp) and > disabled, but it doesn't seem to make a difference. > > One of the commands I have been using is: > /sbin/iptables -t nat -I PREROUTING -p tcp -d old_mailserver_ip/32 > --dport 25 -j REDIRECT --to 127.0.0.1:25 > > Am I missing anything? > > Thanks > > Gabriel > > > ___________________________________________________________ > Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for > your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.html > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >