in the moment, I'm moving my root server to a new one. During this action, I want to loose not too much mails
I want to forward incoming connections on the old server to the new server. This should be possible, or am I wrong ?
I'm not very familiar with iptables. My firewall script was written by a friend of me. I only understand a little bit and I did try forwarding some time ago, without success. Here is the rule, that allows incoming SMTP connections on the old server.
What has to be changed to forward these connections to lets say IP 10.10.10.10 ?
iptables -A INPUT -i eth0 -m state --state NEW -p tcp --dport 25 -j ACCEPT
Thanks a lot