Postfix relay problems

[Nick Marsh <nmarsh1 mac com>]

Hello,

I need some assistance. I have 4 Linux servers running Postfix. Note the setup below...

Server #1 - Has 2 NICs, 1 external (directly connected to the internet w/Public IP) and 1 internal (10.X.X.X).
Server #2 - Internal Linux server with 10.X.X.X IP
Server #3 - Internal Linux server with 10.X.X.X IP
Server #4 - Internal Linux server with 10.X.X.X IP

Servers 2-4 are relaying their mail via Server 1. Server 1 works fine. The problem is that many mail hosts reject mail from Servers 2-4. Note the error messages below...

Domain of sender address root winks-10 nr ad something com does not exist
apache winks-10 nr ad something com    Sender domain must exist

I tried to set myorigin = something.com. It fixes the above errors, but my then local mail doesn't work.

How do I configure Server 1 to masquerade my internal servers? Thank you.



nick marsh
nmarsh1 mac com