Fri, 22 Mar 2013 16:55:21 -0400 (EDT) skrev Wietse Venema <wie...@porcupine.org>:
> Titanus Eramius: > > Besides aptget.dk this server also hosts cogky.dk (among others), > > and while unknown recipients is being correctly rejected with a 550 > > when sent to aptget.dk, they are not when sent to the other virtual > > domains. Instead they are accepted and then returned by the > > MAILER_DAEMON, which in turn opens the server to backscatter. > > Where is cogky.dk defined: mydestination, virtual_alias_domains, > virtual_mailbox_domains, relay_domains? It must be only one. > > This answer determines where the "known" recipients must be listed: > local_recipient_maps, virtual_alias_maps,m virtual_mailbox_maps, > relay_recipients. If you list the domain or recipients in the wrong > place then mail will be rejected. > > See http://www.postfix.org/ADDRESS_CLASS_README.html > > Wietse The goal is a "virtual only" mailserver, so the domains is stored in MySQL and fetched through virtual_mailbox_domains. Besides virtual_mailbox_domains, I use virtual_mailbox_maps and virtual_alias_maps. The documentation is among the best documentation I have seen, but I can't seem to find the solution, even though I have read most of what I could find in relation to virtual handling. One more "clue" is the error messages when sending to non-existent users. When sending to aptget.dk Postfix responds with "550 5.1.1 <non_exist...@aptget.dk>: Recipient address rejected: User unknown in virtual mailbox table". When sending to cogky.dk the response is only "<non_exist...@cogky.dk>: user unknown" Thank you for your time, Titanus
