Postfix - allow non-auth connections from local network, relay mail via SASL AUTH
I have a situation where I have a server as the mail relay for firewalled servers, where previously I was just sending mail out unauthenticated, but now I would like to receive the mail from the servers unauthenticated and relay them to another server that requires SASL AUTH.
If I enable SASL on the gateway mail server, it then requires all connections to it to be authenticated.
Can anyone offer some postfix knowledge on how I might set this up?
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