Date: Fri, 15 Dec 2006 11:56:50 +0100
From: Folkert van Heusden <folkert@vanheusden.com>
To: "Giacomo A. Catenazzi" <cate@cateee.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Postgrey experiment at VGER
Message-ID: <20061215105649.GE3391@vanheusden.com>
References: <200612131711.28292.a1426z@gawab.com> <458025A5.2070001@cateee.net>
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>May I suggest a smarter way to filter these spammers, by just whitelisting 
>email addresses of valid posters, after sending a confirmation for the 
>first post.  Now if these spammers get smart, and start using personal 
>email addresses, I would certainly expect some real action by abused email 
>address owners.

Spammers will fake the from-address, possibly using the address of a
spam-trap for the from-field. Your challenge will then be sent to the
spam-trap, causing vger to be blacklisted.


Folkert van Heusden

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