Here's a little trick to get servers to listen on additional ports. This can be used for SMTP as well or any other protocol.
iptables -v -t nat -A PREROUTING -p tcp -j REDIRECT --dport 109 --to-ports 110
I implemented this for a client and it works great.
Keefe
iptables -v -t nat -A PREROUTING -p tcp -j REDIRECT --dport 109 --to-ports 110
I implemented this for a client and it works great.
Keefe