From: Crayon (crayon.shin.chan.ukgmail.com)
Date: Mon Jan 01 2007 - 10:52:18 CST

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi

I'm new to postfix (having used qmail for several years). In my old setup
I had maildrop rules that are run on addresses which I use to receive
mailing lists. So for example, for an address that is used solely for
receiving this list, the maildrop rules would check for the presence of
these headers:

  Sender: owner-postfix-userspostfix.org
  Precedence: bulk
  List-Post: <mailto:postfix-userspostfix.org>
  List-Help: <http://www.postfix.org/lists.html>
  List-Unsubscribe: <mailto:majordomopostfix.org>
  List-Subscribe: <mailto:majordomopostfix.org>

If the check fails the mail is unlikely to have come from the list and is
most likely spam (or a direct reply from someone on the list - which I
don't want) and gets rejected.

What I would like to know is, can something similar be implemented using
postfix's header_checks? My reading of the docs suggests it can't be done
because postfix only processes a single header at a time and makes a
decision per header.

Another thing is I would like to reject mails don't have a "Subject:"
header (or it is empty). Again, because of the way the header_checks are
done I don't think I can check for the absence of a particular header?

--
Crayon

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]