James Feeney: > At http://www.postfix.org/postconf.5.html : > > ---- > smtpd_reject_unlisted_recipient (default: yes) > > Request that the Postfix SMTP server rejects mail for unknown > recipient addresses, even when no explicit reject_unlisted_recipient > access restriction is specified. This prevents the Postfix queue > from filling up with undeliverable MAILER-DAEMON messages. > > An address is always considered "known" when it matches a virtual(5) alias or > a canonical(5) mapping.
If that last sentence above is confusing, then I can invert the text to make it consistent with its context. (no change) Request that the Postfix SMTP server rejects mail for unknown recipient addresses, even when no explicit reject_unlisted_recipient access restriction is specified. This prevents the Postfix queue from filling up with undeliverable MAILER-DAEMON messages. (inverted) The recipient address is unknown when it does not match a virtual(5) alias or a canonical(5) table, plus one of the following conditions holds: > *The recipient domain matches $mydestination, $inet_interfaces or > $proxy_interfaces, but the recipient is not listed in $local_recipient_maps, > and $local_recipient_maps is not null. > *The recipient domain matches $virtual_alias_domains but the recipient is not > listed in $virtual_alias_maps. > *The recipient domain matches $virtual_mailbox_domains but the recipient is > not listed in $virtual_mailbox_maps, and $virtual_mailbox_maps is not null. > *The recipient domain matches $relay_domains but the recipient is not listed > in $relay_recipient_maps, and $relay_recipient_maps is not null. Wietse