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Re: [Asrg] Proposal: NO_XMIT DNS record

Yakov Shafranovich <research@solidmatrix.com> Mon, 14 July 2003 00:57 UTC

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To: Walter Dnes <waltdnes@waltdnes.org>, ASRG list <asrg@ietf.org>
From: Yakov Shafranovich <research@solidmatrix.com>
Subject: Re: [Asrg] Proposal: NO_XMIT DNS record
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Date: Sun, 13 Jul 2003 20:54:49 -0400

At 01:15 AM 7/13/2003 -0400, Walter Dnes wrote:

>.....
>
>   Let's get back to basics to see why RMX has been proposed.  Trojaned
>machines have been used to originate spam.  The RMX proposal seeks to
>set up lists of which machines can tramsit for which domains.  This
>misses the point of the problem.  It's not the authorized MTAs we have
>problems with, it's the trojaned home machines, that have no business
>whatsoever connecting to port 25 (except to their own ISP) on behalf of
>*ANY* domain whatsoever.
>
>   So much for criticism; what do I propose as an improvement ?
>
>   My proposal is for a NO_XMIT record in DNS.  It effectively stands the
>RMX proposal on its head.  It would signify IP addresses that have no
>business connecting to external MTAs.  This would be very similar in
>function to MAPS DUL(TM) and other lists of dynamic IP addresses.
>......

Where in the DNS system would this data be stored? 


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