[Esa-l] Stopping Spammage

[Jason Jordan]

Folks,

I've noticed a massive pickup in spam over the last 2 weeks or so....

You may recall I wanted to block HTML email - well I got that working
nicely and the world's a nicer place!

It doesn't happen very often, but one regular characteristic of the spam
I'm still receiving is that the TO: field is completely blank.

Now I assume this means I was bcc'ed...?

Does anyone know of a way - either sendmail rule or procmail (John's
script?) to deny e-mail with missing fields?

Also, what would be the collateral damage of forcing the claimed sender
address to match the resolved address?  Below you can see it claimed to
be mail.888vvip.com where it was really pacific.net.sg.  Can I even
check for that when the mail was accepted by someone else?

I include the headers below... 8-/

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Received: by swami.pcguru.com.au (mbox jas)
 (with Cubic Circle's cucipop (v1.31 1998/05/13) Wed Apr 25 18:44:32
2001)
X-From_: memeemeeeeeeee at hotmail.com  Wed Apr 25 18:43:37 2001
Return-Path: <memeemeeeeeeee at hotmail.com>
Received: from ns.buyonnet.com (ns.buyonnet.com [212.67.197.230])
	by swami.pcguru.com.au (8.11.0/8.11.0) with ESMTP id f3PAhUn03978
	for <jas at pcguru.com.au>; Wed, 25 Apr 2001 18:43:35 +0800
Received: from mail.888vvip.com (ppp95.dyn121.pacific.net.sg
[210.24.121.95])
	by ns.buyonnet.com (8.10.2/8.10.2) with SMTP id f3PAegY05014;
	Wed, 25 Apr 2001 18:40:48 +0800
Message-Id: <200104251040.f3PAegY05014 at ns.buyonnet.com>
To: 
From: Soh Wee Bee <memeemeeeeeeee at hotmail.com>
Date: Wed, 25 Apr 2001 18:36:39
Subject: Why Not?

Dear Friend: 

"Making over half million dollars every 4 to 5 months from your 
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Cheers, jas