IETF Logo Mail Archive

Re: [Asrg] E-postage from first principles

Jonathan Morton <chromi@chromatix.demon.co.uk> Thu, 29 April 2004 09:09 UTC

Received: from optimus.ietf.org (iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA15286 for <asrg-archive@odin.ietf.org>; Thu, 29 Apr 2004 05:09:03 -0400 (EDT)
Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BJ7Ti-0001v4-El for asrg-archive@odin.ietf.org; Thu, 29 Apr 2004 05:05:10 -0400
Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i3T95AhT007379 for asrg-archive@odin.ietf.org; Thu, 29 Apr 2004 05:05:10 -0400
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BJ7Ri-0001Vm-UO for asrg-web-archive@optimus.ietf.org; Thu, 29 Apr 2004 05:03:07 -0400
Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id FAA15018 for <asrg-web-archive@ietf.org>; Thu, 29 Apr 2004 05:03:00 -0400 (EDT)
Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BJ7Ra-0004sm-SI for asrg-web-archive@ietf.org; Thu, 29 Apr 2004 05:02:58 -0400
Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BJ7Qe-0004hQ-00 for asrg-web-archive@ietf.org; Thu, 29 Apr 2004 05:02:01 -0400
Received: from optimus.ietf.org ([132.151.1.19]) by ietf-mx with esmtp (Exim 4.12) id 1BJ7Pm-0004W6-00 for asrg-web-archive@ietf.org; Thu, 29 Apr 2004 05:01:07 -0400
Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BJ7H5-0007Jn-5C; Thu, 29 Apr 2004 04:52:07 -0400
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BJ7FA-0006uc-6p for asrg@optimus.ietf.org; Thu, 29 Apr 2004 04:50:08 -0400
Received: from ietf-mx (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA14486 for <asrg@ietf.org>; Thu, 29 Apr 2004 04:50:01 -0400 (EDT)
Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BJ7F2-0002fB-34 for asrg@ietf.org; Thu, 29 Apr 2004 04:50:00 -0400
Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BJ7E0-0002TM-00 for asrg@ietf.org; Thu, 29 Apr 2004 04:48:57 -0400
Received: from chromatix.demon.co.uk ([80.177.102.173] helo=lithium.chromatix.org.uk) by ietf-mx with esmtp (Exim 4.12) id 1BJ7Cv-0002Ae-00 for asrg@ietf.org; Thu, 29 Apr 2004 04:47:49 -0400
Received: from arowana.chromatix.org.uk ([192.168.239.106]) by lithium.chromatix.org.uk with esmtp (Exim 4.31) id 1BJ7Cx-0001vn-6S; Thu, 29 Apr 2004 09:47:51 +0100
In-Reply-To: <20040429063821.6203.qmail@xuxa.iecc.com>
References: <20040429063821.6203.qmail@xuxa.iecc.com>
Mime-Version: 1.0 (Apple Message framework v613)
Content-Type: text/plain; charset="US-ASCII"; format="flowed"
Message-Id: <E569729E-99B9-11D8-A28E-000393863768@chromatix.demon.co.uk>
Content-Transfer-Encoding: 7bit
Cc: asrg@ietf.org
From: Jonathan Morton <chromi@chromatix.demon.co.uk>
Subject: Re: [Asrg] E-postage from first principles
To: John Levine <asrg@johnlevine.com>
X-Mailer: Apple Mail (2.613)
Content-Transfer-Encoding: 7bit
Sender: asrg-admin@ietf.org
Errors-To: asrg-admin@ietf.org
X-BeenThere: asrg@ietf.org
X-Mailman-Version: 2.0.12
Precedence: bulk
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/asrg>, <mailto:asrg-request@ietf.org?subject=unsubscribe>
List-Id: Anti-Spam Research Group - IRTF <asrg.ietf.org>
List-Post: <mailto:asrg@ietf.org>
List-Help: <mailto:asrg-request@ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/asrg>, <mailto:asrg-request@ietf.org?subject=subscribe>
List-Archive: <https://www1.ietf.org/mail-archive/working-groups/asrg/>
Date: Thu, 29 Apr 2004 09:47:50 +0100
X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org
X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=no version=2.60
Content-Transfer-Encoding: 7bit
Content-Transfer-Encoding: 7bit

A good summary, John.

> Receipient rate limiting might take the form of hashcash, although
> that seems too easily circumvented so long as the bad guys have
> zombies to do their hashing.

This is a quantitative rather than qualitative argument against 
hashcash, which is easily answered by increasing the bit count demanded 
by the recipient, if it seems it's not having enough effect.  This is a 
measure that can be implemented by individual recipients who feel it 
necessary, rather than needing to be implemented unilaterally.

--------------------------------------------------------------
from:     Jonathan "Chromatix" Morton
mail:     chromi@chromatix.demon.co.uk
website:  http://www.chromatix.uklinux.net/
tagline:  The key to knowledge is not to rely on people to teach you it.


_______________________________________________
Asrg mailing list
Asrg@ietf.org
https://www1.ietf.org/mailman/listinfo/asrg

v2.23.0 | Report a Bug | By Email