From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <ffe76a32a00e8a6c09d4be67ae5ff2d1@plan9.bell-labs.com>
From: David Presotto <presotto@closedmind.org>
To: 9fans@cse.psu.edu
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Subject: [9fans] (no subject)
Date: Mon,  1 Sep 2003 10:08:27 -0400
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And, by the way, filter looks through the message to get the
sender address.  You pass it the recipient's address on the
command line because that is often different from anything
found in the mail message (because of redirection, blank copies,
...).