Ok, I have a fairly complex firewall setup on my Linux box with 7 host IPs, 2 Internet connections, and a DMZ.

I need to direct 1 IP to stunnel on the firewall to be forwarded to the mail server in the DMZ on ports 8383, 993, 995 etc.. but leave ports 25, and 3389 forwarded via iptables, can anyone lend a hand?