RE: [Asrg] 3. Proof-of-work analysis
"Hallam-Baker, Phillip" <pbaker@verisign.com> Tue, 18 May 2004 06:23 UTC
Received: from optimus.ietf.org (iesg.org [132.151.1.19]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id CAA17168 for <asrg-archive@odin.ietf.org>; Tue, 18 May 2004 02:23:49 -0400 (EDT)
Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BPxqJ-0007jJ-HV for asrg-archive@odin.ietf.org; Tue, 18 May 2004 02:12:47 -0400
Received: (from exim@localhost) by www1.ietf.org (8.12.8/8.12.8/Submit) id i4I6ClTc029708 for asrg-archive@odin.ietf.org; Tue, 18 May 2004 02:12:47 -0400
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BPxmP-0005vg-12 for asrg-web-archive@optimus.ietf.org; Tue, 18 May 2004 02:08:45 -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 CAA11601 for <asrg-web-archive@ietf.org>; Tue, 18 May 2004 02:08:42 -0400 (EDT)
Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BPxmL-0004Ji-Fg for asrg-web-archive@ietf.org; Tue, 18 May 2004 02:08:41 -0400
Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BPxlS-0003xl-00 for asrg-web-archive@ietf.org; Tue, 18 May 2004 02:07:47 -0400
Received: from optimus.ietf.org ([132.151.1.19]) by ietf-mx with esmtp (Exim 4.12) id 1BPxkt-0003bh-00 for asrg-web-archive@ietf.org; Tue, 18 May 2004 02:07:11 -0400
Received: from localhost.localdomain ([127.0.0.1] helo=www1.ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BPxd1-00018u-6W; Tue, 18 May 2004 01:59:03 -0400
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by optimus.ietf.org with esmtp (Exim 4.20) id 1BPxZn-0008SF-RT for asrg@optimus.ietf.org; Tue, 18 May 2004 01:55:43 -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 BAA02517 for <asrg@ietf.org>; Tue, 18 May 2004 01:55:41 -0400 (EDT)
Received: from ietf-mx.ietf.org ([132.151.6.1] helo=ietf-mx) by ietf-mx with esmtp (Exim 4.32) id 1BPxZk-00079x-Ed for asrg@ietf.org; Tue, 18 May 2004 01:55:40 -0400
Received: from exim by ietf-mx with spam-scanned (Exim 4.12) id 1BPxYn-0006m5-00 for asrg@ietf.org; Tue, 18 May 2004 01:54:42 -0400
Received: from peacock.verisign.com ([65.205.251.73]) by ietf-mx with esmtp (Exim 4.12) id 1BPxXz-0006Q8-00 for asrg@ietf.org; Tue, 18 May 2004 01:53:51 -0400
Received: from mou1wnexc02.vcorp.ad.vrsn.com (verisign.com [65.205.251.54]) by peacock.verisign.com (8.12.11/) with ESMTP id i4I5rpD1012954; Mon, 17 May 2004 22:53:51 -0700 (PDT)
Received: by mou1wnexc02.vcorp.ad.vrsn.com with Internet Mail Service (5.5.2657.72) id <KNP479SR>; Mon, 17 May 2004 22:53:51 -0700
Message-ID: <C6DDA43B91BFDA49AA2F1E473732113E5DBC9C@mou1wnexm05.vcorp.ad.vrsn.com>
From: "Hallam-Baker, Phillip" <pbaker@verisign.com>
To: 'Seth Breidbart' <sethb@panix.com>, asrg@ietf.org
Subject: RE: [Asrg] 3. Proof-of-work analysis
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2657.72)
Content-Type: text/plain; charset="iso-8859-1"
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: Mon, 17 May 2004 22:53:43 -0700
X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on ietf-mx.ietf.org
X-Spam-Status: No, hits=0.1 required=5.0 tests=AWL autolearn=no version=2.60
> Spamware could parallel connections to umpteen million recipients and > send at full speed if all it had to do was wait. Absolutely, this code is not your standard mail client stuff. > > Or for that matter just don't respond with a 250 to their HELO for N > > seconds and if they continue talking anyhow drop the connection > > (something like this is in the current beta sendmail, 8.13.0beta.) > > That works currently against spamware that pipelines illegally. If it > becomes more common, that spamware will become less common. Problem is that there are lots of people using these techniques for good reason. 'illegal' is a poor choice of language, SMTP is not an act of parliament, nor is it a particularly great design. If you need to send out a million mails to your customers as Ebay does every day you cannot wait around a minute while someone's idiot sendmail script runs. _______________________________________________ Asrg mailing list Asrg@ietf.org https://www1.ietf.org/mailman/listinfo/asrg
- [Asrg] 3. Proof-of-work analysis Richard Clayton
- Re: [Asrg] 3. Proof-of-work analysis Barry Shein
- Re: [Asrg] 3. Proof-of-work analysis Seth Breidbart
- Re: [Asrg] 3. Proof-of-work analysis der Mouse
- RE: [Asrg] 3. Proof-of-work analysis Hallam-Baker, Phillip
- Re: [Asrg] 3. Proof-of-work analysis Seth Breidbart
- Re: [Asrg] 3. Proof-of-work analysis Jonathan Morton
- Re: [Asrg] 3. Proof-of-work analysis der Mouse
- Re: [Asrg] 3. Proof-of-work analysis Alan DeKok
- Re: [Asrg] 3. Proof-of-work analysis Richard Clayton
- Re: [Asrg] 3. Proof-of-work analysis Alan DeKok
- Re: [Asrg] 3. Proof-of-work analysis der Mouse
- Re: [Asrg] 3. Proof-of-work analysis Jonathan Morton
- RE: [Asrg] 3. Proof-of-work analysis grsa
- RE: [Asrg] 3. Proof-of-work analysis Bill Cole
- Don't blame the list, blame me (was RE: [Asrg] 3.… Bill Cole
- RE: [Asrg] 3. Proof-of-work analysis Bill Cole
- [Asrg] Re: 3. Proof-of-work analysis Adam Back
- Re: [Asrg] 3. Proof-of-work analysis Richard Clayton
- [Asrg] Re: 3. Proof-of-work analysis Adam Back
- Re: [Asrg] 3. Proof-of-work analysis Tony Finch
- Re: [Asrg] 3. Proof-of-work analysis Seth Breidbart
- Re: [Asrg] Re: 3. Proof-of-work analysis Jonathan Morton
- Re: [Asrg] Re: 3. Proof-of-work analysis Barry Shein
- Re: [Asrg] 3. Proof-of-work analysis Jonathan Morton
- [Asrg] Re: 3. Proof-of-work analysis Philip Miller
- Re: [Asrg] 3. Proof-of-work analysis Jon Kyme
- Re: [Asrg] Re: 3. Proof-of-work analysis Mark Baugher
- [Asrg] Re: 3. Proof-of-work analysis Adam Back
- Re: [Asrg] 3. Proof-of-work analysis Richard Clayton
- Re: [Asrg] Re: 3. About hashcash v1 (was: Proof-o… Jonathan Morton
- [Asrg] Re: 3. Proof-of-work analysis Adam Back
- Re: [Asrg] Re: 3. Proof-of-work analysis william(at)elan.net
- Re: [Asrg] Re: 3. Proof-of-work analysis Richard Clayton
- Re: [Asrg] Re: 3. Proof-of-work analysis Richard Clayton
- Re: [Asrg] Re: 3. Proof-of-work analysis william(at)elan.net