I am running Web server on Linux Mandrake6.1 box for my company. Recently I got DNS name registration for my IP and now www and ftp servers work fine. But my sendmail server won't receive emails from outside of my local LAN. You can send mail everywhere but you can't receive it. This I get from my external mail provider:
"This Message was undeliverable due to the following reason:
Each of the following recipients was rejected by a remote mail server.
The reasons given by the server are included to help you determine why each recipient was rejected.
Reason: <email@example.com>... Relaying denied "
If you want to send mail inside of our company everything works fine. I use regular sendmail distribution. My Linux box acts as Firewall-Proxy for my local LAN.
Please advise me how to solve the problem.