I have a staging server running Postfix, which I want to only set up to deliver mail to example.org. This machine is running Mailman, and gets lists copied back from the production server - we want to be able to test on this server safe in the knowledge that if someone accidentally sends mail to the wrong list, we won't accidentally send any test messages out to anyone outside our test domain.
All mail is sent from this server to a smarthost for delivery. The smarthost is the same one that is used in production, and will accept mail for any destination. I have set up relay_domains = example.org smtpd_recipient_restrictions = reject_unauth_destination This correctly causes the server to only relay for example.org when addressed by SMTP. However, using mail(1) on the server, Postfix will happily deliver for all addresses. I would like to somehow restrict this to the relay_domains only, and have it bounce all messages to any other recipients. Is this possible, or is there another way to achieve my goal, given my constraints? Regards, Craig
