I'm trying to use a dummy/DEV smtp server (webster) which by default opens port 5000 to accept SMTP messages.
Previously with Fedora 16/iptables had no problems opening port 25, redirect to port 5000, and everything was fine.
However, using the firewalld UI allowing port 25 for the public zone (confirmed correct zone), port-forwarding from 25 to 5000, nothing is working. (both persistent and runtime checked/confirmed).
netstat -a |grep smtp does not show anything listening, so I think that is where my problem is.
telnet localhost 5000 connects to smtp (as well as real ip) telnet localhost 25 connection refused (as well as real ip)
Question: how can I open a listening port for SMTP (port 25) and redirect it to 5000?