Check selinux setings and allow to work a mail server on non standard port. Do you have anything at audit.log?
Regards Arek 16 mar 2015 21:26 "Mark Hansel" <[email protected]> napisał(a): > Hi, > > I want to use a relay host on port 10025. No matter what firewall rules I > use, the port is blocked. I tested this using 2 computers with local > connections only. (Isolated from the overall network by unplugging the > router and plugging both computers into the same switch). The tests > involved using telnet to target ports. Error was "connection refused." > Port scans show different, but in important respects, similar results. > > Way back in the days of inetd and xinetd, you told the daemon to fire up a > program whenever a port was accessed. I cannot find an analogous process > with SL. > > I use postfix as my MTA. The relay host is properly defined in the > configuration file (main.cf). (This configuration worked with Ubuntu and > with Mint Linux.) > > OS version is SL7, up to date, running firewalld, fail2ban (b/c of brute > force root attack) with SELINUX active. > > Thank you, > m hansel
