From owner-freebsd-hackers  Tue Apr 22 06:21:48 1997
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From: "Richard Seaman, Jr." <lists@tar.com>
To: "Charles Henrich" <henrich@crh.cl.msu.edu>
Cc: "hackers@freebsd.org" <hackers@freebsd.org>
Date: Tue, 22 Apr 97 08:21:39 -0500
Reply-To: "Richard Seaman, Jr." <lists@tar.com>
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Subject: sendmail tricks anyone
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On Tue, 22 Apr 1997 01:34:24 -0700 (PDT), owner-hackers-digest@hub.freebsd.org wrote:

>From: Charles Henrich <henrich@crh.cl.msu.edu>
>Date: Mon, 21 Apr 1997 16:33:26 -0400
>Subject: sendmail tricks anyone?
>
>Im trying to find out if I can make sendmail obey a set of rules like the
>following:
>
>If an email comes from a domain that sendmail understands as local
>(/etc/sendmail.cw or what have you) to allow remailing of the mssage.
>
>if an email comres from a domain that isnt local, only allow local delivery of
>that message, else eat it..
>
>Anyone?

Look at http://www.informatik.uni-kiel.de/%7Eca/email/check.html