How do I make Postfix reject all mails when the client is not authenticated and the sender is from my domain? Is there an easy way to do this?
migrated from superuser.com Aug 4 '12 at 12:20
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It seems the
You might want to check the ADDRESS VERIFICATION README and the part about forged sender for more details. It actually says it's good to turn it on for your own domains, but only on small servers (this might not be suitable on an ISP scale server farm).
This, indeed, could be more useful on ServerFault.