Server is behind a firewall (sonicwal) and a DNS address points him.
VPN is alltime.
Sendmail listens for VPN address, but we need listens to the public address, too.
Is it possible?
Please don't top-post on this mailing list.
You'll need to configure your firewall to forward incoming port 25 connections on your public IP address to your mail server, which will see them as incoming connections on 10.0.0.1.
Paul.