From owner-freebsd-chat  Mon Feb 12  8: 1:44 2001
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Date: Mon, 12 Feb 2001 18:01:15 +0200
From: Johann Visagie <johann@egenetics.com>
To: Peter Wemm <peter@netplex.com.au>
Cc: chat@FreeBSD.ORG
Subject: Re: FreeBSD Postfix and Majordomo security (was FreeBSD Ports Security Advisory: FreeBSD-SA-01:INSERT_NUMBER_HERE)
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References: <009c01c093e5$d1cd7230$94cba8c0@hh.kew.com> <200102111357.f1BDvGU36876@mobile.wemm.org>
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Peter Wemm on 2001-02-11 (Sun) at 05:57:16 -0800:
> 
> Regarding spam, the thought just occurred to me that we can catch a lot of
> it by checking that the list name appears in a To: or CC: line somewhere.
> eg: If mail to -current does not have '.*current@freebsd.org' in the To: or
> CC: line (most spam has got fakeuser@hotmail.com or something), then bounce
> it.
> 
> I suspect that would catch almost all of the spam that currently slips
> through the content filters.

My own very subjective experience (i.e. I didn't try to keep any hard stats)
on the lists I run is that this is good for catching probably 95% or more of
current spam.

Let's hope the authors of mass mailers don't get wise to this.  :-/

-- Johann


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