On Tue, Oct 13, 2015 at 12:29:54PM -0400, Phil Stracchino wrote: > > Yes, but the question is why your MTA would have accepted such a > > recipient. Recipient validation would normally reject non-existent > > users whether UTF-8 or ASCII. Have you disabled recipient validation, > > or created a wildcard alias that permits all recipients? > > No. In fact, the opposite; I'm specifically rejecting mail to some > otherwise technically valid recipients that should not receive mail > (system users), and otherwise accepting only valid existing users: > > local_recipient_maps = unix:passwd.byname > $alias_maps > > alias_maps = btree:/etc/postfix/aliases > btree:/var/lib/mailman/data/aliases > > alias_database = btree:/etc/postfix/aliases > btree:/var/lib/mailman/data/aliases
Keep in mind that wildcard virtual(5) aliases can also break recipient validation. Any "@domain" keys in the tables for alias_maps or virtual_alias_maps? Otherwise, how might these invalid recipients be entering your queue? -- Viktor.