On Thu, Dec 18, 2025 at 11:25:07AM -0500, Dennis Putnam via Postfix-users wrote:
> <cufsalumni@localhost>: Recipient address rejected: User unknown in local > recipient table That's the *local* recipient table, not the *relay* recipient table. See https://www.postfix.org/ADDRESS_CLASS_README.html > I don't understand why. In my main.cf I have: Because: - The "localhost" domain is the "local" address class, i.e. is listed in $mydestination. - The "cufsalumni" user is not listed in $local_recipient_table > relay_domains = hash:/opt/mailman/mm/var/data/postfix_domains Which domains are "relay" domains is not relevant. > gmail.com gmail.com You **REALLY** DO NOT want to be a open relay for "gmail.com", any spammer who figures out that's the case will abuse your system to relay spam to GMail, until you're blocked by Google. > localhost localhost This is a bad idea, because that is also (as it typically should be) listed in $mydestination, which takes precedence. > I did run postmap on that file. What am I missing? TIA. Pretty much everything, you'll need to spend some time understanding the content of ADDRESS_CLASS_README. Perhaps with the aid of Ralf's and Patrick's book. -- Viktor. 🇺🇦 Слава Україні! _______________________________________________ Postfix-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
