Gerald Vogt:
> On 13.03.2013 15:54, Wietse Venema wrote:
> >> 2. This still won't help to accept e-mails for users regardless of what
> >> comes after the @ and reject it if the user does not exist.
> >
> > To reject non-existent recipients, list the existing ones in
> > relay_recipient_maps. If you can't populate that table, use
>
> And how do I create a list to accept e-mails for u...@example.com and
> user@*.example.com for a known set of user names?
In that case one should normalize the address (u...@whatever.example.com
-> u...@example.com) before consulting a table with all u...@example.com.
Unfortunately, Postfix has (up to now) no way to feed the result
from one table into another table, but there is a workaround
which requires Postfix 2.7 or later:
/etc/postfix/main.cf:
smtpd_command_filter = pcre:/etc/postfix/command_filter
/etc/postfix/command_filter:
/^RCPT\s+TO:\s*<([^@]+)@.+\.example\.com>(.*)/ RCPT
TO:<${1...@example.com>$2
(address forms without <> left as an exercise for the reader).
This normalizes u...@whatever.example.com -> u...@example.com before
the SMTP server subjects the address to recipient validion, with all
valid u...@example.com instances listed with relay_recipient_maps.
This is admittely a bit gross but so is the problem.
Wietse
