Below is the log where abc-alias maps 10 different comma separated addresses. [email protected] was a terminated user and mapping for that user got removed from canonical map.
postfix-mta-world/local[3186603]: [mail.info] 8C4D211A1D79C: to=< [email protected]>, orig_to=<[email protected]>, relay=local, delay=0.03, delays=0.01/0/0/0.02, dsn=4.3.0, status=deferred (temporary failure) Reproduced the scenario by making an additional dummy entry along with a valid entry in alias and there I got an unknown user error. *Test Log* postfix-mta-world/local[114419]: [mail.info] 065368088AA8: to=< [email protected]>, orig_to=<[email protected]>, relay=local, delay=4785, delays=4785/0.02/0/0.02, dsn=4.1.1, status=SOFTBOUNCE (unknown user: "abc-invalid-random") *Postfix queue log* C726B808A751 740 Fri Jan 16 19:48:16 [email protected] (unknown user: "abc-invalid-random") [email protected] (reason unavailable) [email protected] *Alias map for example.com <http://example.com>* abc-alias: [email protected],abc-invalid-random Not using reject_unverified_recipient but I tried using and that didn't work On Sat, Jan 17, 2026 at 3:16 AM Wietse Venema via Postfix-users < [email protected]> wrote: > sandeep pawar via Postfix-users: > > Hi > > > > I am using postfix aliases maps which expands to multiple addresses > > (similar to mailing-list). What I am observing is that if one of the > mapped > > addresses is invalid, the mail is not delivered to any of the recipients > > who are part of that alias. > > > > Local delivery fails with "unknown user" msg and other recipients are not > > tried at all. This causes temporary mail delays for that > alias/mailing-list > > when an employee leaves the firm. > > > > Is there a way to solve this and only generate soft-bounce for invalid > > addresses? > > Look at your Postfix logging (/var/log/maillog or similar). > Which Postfix program logs the "unknown user" error? > > Are you using the reject_unverified_recipient feature in main.cf?? > > Wietse > > _______________________________________________ > Postfix-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > -- Sandeep Pawar
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