Date: Sun, 16 Feb 2003 13:38:23 -0500 From: Chuck Swiger <cswiger@mac.com> To: freebsd Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Setting proper From host in Sendmail Message-ID: <3E4FDA9F.6080508@mac.com> In-Reply-To: <3.0.5.32.20030216104416.012b5258@sage-one.net> References: <3.0.5.32.20030216090543.02216038@sage-one.net> <3.0.5.32.20030216090543.02216038@sage-one.net> <3.0.5.32.20030216104416.012b5258@sage-one.net>
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Jack L. Stone wrote:
[ ... ]
> Thanks for the reply, but that is not what I meant. I don't want the FROM
> to be replaced with the machine's host name, but the FROM field of the
> customer who fills in his email address in the web form. In other words,
> the system isn't seeing that field and is replacing with the
> "www@myhost.com". That's the only way my "vacation" program can send an
> autoreply to the customer. What you suggest will just send the autoreply
> back to the machine it came from.
"perldoc -q Mail" returns some useful suggestions. I'd recommend using
Mail::Mailer instead of formmail.pl, because the latter has had a iffy
security record. If you feed the message into sendmail directly (as the
example shows, or via vacation, for that matter), you can use the -f
option to sendmail:
-fname Sets the name of the ``from'' person (i.e., the
envelope sender of the mail). This address may
also be used in the From: header if that header is
missing during initial submission. The envelope
sender address is used as the recipient for deliv-
ery status notifications and may also appear in a
Return-Path: header. -f should only be used by
``trusted'' users (normally root, daemon, and net-
work) or if the person you are trying to become is
the same as the person you are. Otherwise, an X-
Authentication-Warning header will be added to the
message.
Of course, add the userid that formmail is running as to sendmail's list
of trusted users, if you wish to suppress the warning header mentioned.
10-sec# cd /tmp
11-sec# cat > test_message
Subject: a test message
From: root@localhost
To: Charlie Root
Date: about now
test 1 2 3
12-sec# sendmail -f'toor@sec' root@localhost < test_message
14-sec# tail -25 /var/mail/root
Rebuilding whatis database:
-- End of weekly output --
From toor@cswiger-sec.homeip.net Sat Feb 15 22:33:30 2003
Return-Path: <toor@cswiger-sec.homeip.net>
Received: from sec.codefab.com (smmsp@localhost [127.0.0.1])
by sec.codefab.com (8.12.6/8.12.6) with ESMTP id h1G3XSwb028437
for <root@sec.codefab.com>; Sat, 15 Feb 2003 22:33:28 -0500(EST)
(envelope-from toor@cswiger-sec.homeip.net)
Received: (from root@localhost)
by sec.codefab.com (8.12.6/8.12.6/Submit) id h1G3XSJd028436
for root@localhost; Sat, 15 Feb 2003 22:33:28 -0500 (EST)
Message-Id: <200302160333.h1G3XSJd028436@sec.codefab.com>
Subject: a test message
From: root@cswiger-sec.homeip.net
To: Charlie@cswiger-sec.homeip.net, Root@cswiger-sec.homeip.net
Date: about now
X-Spam-Status: No, hits=3.6 required=8.0
tests=INVALID_DATE,NO_REAL_NAME,SPAM_PHRASE_00_01
version=2.43
X-Spam-Level: ***
test 1 2 3
-Chuck
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