Thomas Nyberg:
> Hello,
>
> Let's say that I do have a user "user" on my system, but I would like
> for emails sent to "user+doesnotex...@domain.org" to bounce back the
> "Undelivered mail" message with something like:
>
> <user+doesnotex...@domain.org>: unknown user: "user+doesnotexist"
>
> How would I do this? I naively tried adding
>
> user+doesnotexist: doesnoteixst
>
> to my /etc/aliases file, but it was still delivered to my user account.
/etc/aliases is used only for mail handled by the local(8)
delivery agent.
Alternative: use a transport map; that works for all domains.
/etc/postfix/main.cf
transport_maps = hash:/etc/postfix/transport
/etc/postfix/transport:
user+doesnotex...@example.com error:5.1.1 User does not receive mail.
Requires "postmap hash:/etc/postfix/transport".
Wietse
