I have Postfix 2.3.3 on a Centos behind NAT on home ADSL, ISP blocks outbound 25, this is just for occasional casual use, I set it up to ISP SMTP with 'relayhost = [mail.bigpond.com]'
I also have a Postfix server on internet what's the best way to relay from home ADSL NAT server through my own Postfix server (rather than ISP) ? home external IP is dynamic, how to specify LAN IP (192.168.1.x) in conf (longer term I aim to install current release Postfix and sasl/smtp auth, but this is just for interim use till it's upgraded) -- Voytek
