mta-hashcash December 2010

mta-hashcash@lists.lysator.liu.se

1 participants
4 discussions

Updated draft. MTA identification?
by nisse＠lysator.liu.se 24 Jun '26

24 Jun '26

I've updated the draft now (see http://www.lysator.liu.se/~nisse/misc/draft-nisse-hash-cash.txt), trying to address the issues raised by Simon and during the meeting. It now uses per-MTA keys. Then an important question is how an MTA is identified. Ideally, all border-MTA-s belogning to the same administrative domain should have the same identity (except perhaps secondaries). It's not clear if a mail server that accepts mail for multiple domains should have a single id, or one id per domain. I tried to write this down in section 4. Do we need new terminology for the things we identify? It's slightly confusing to say "MTA" when we are talking about not a single mail server, but a fuzzy group of them? Other notable changes: Authentication means signing a challenge string, of the same form as the hash cash challenges. Hash cash challenges now use hmac-sha1, with the string to be search for in the key argument, in order to make the construction somewhat more cryptographically sound. Most of the text on name-key semantics is deleted. /Niels

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Unzustellbar: Re: CV 45
by postmaster＠lifemedicine.com 07 Dec '10

07 Dec '10

Fehler bei der Nachrichtenzustellung an folgende Empfänger oder Gruppen: m.tanzler(a)daskurhaus.at<mailto:m.tanzler@daskurhaus.at> Die eingegebene E-Mail-Adresse konnte nicht gefunden werden. Überprüfen Sie die Adresse, und versuchen Sie, die Nachricht erneut zu senden. Falls das Problem weiterhin besteht, wenden Sie sich an Ihr Helpdesk. Diagnoseinformationen für Administratoren: Generierender Server: lifemedicine.com m.tanzler(a)daskurhaus.at #550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##rfc822;m.tanzler(a)healthcarecompany.at Ursprüngliche Nachrichtenkopfzeilen: Received: from mail.healthcarecompany.at (80.123.123.170) by mail.lifemedicine.com (192.168.111.2) with Microsoft SMTP Server id 14.0.702.0; Tue, 7 Dec 2010 17:53:15 +0100 Received: from 81-188-133-95.pool.ukrtel.net (95.133.188.81) by mail.healthcarecompany.at (192.168.22.254) with Microsoft SMTP Server id 8.1.436.0; Tue, 7 Dec 2010 17:53:34 +0100 Received: from 95.133.188.81 (account 00555(a)ms29.hinet.net HELO ondtsvab.dgcslcpfv.biz) by 81-188-133-95.pool.ukrtel.net (CommuniGate Pro SMTP 5.2.3) with ESMTPA id 274433145 for m.tanzler(a)healthcarecompany.at; Tue, 7 Dec 2010 18:53:33 +0200 To: <m.tanzler(a)healthcarecompany.at> Subject: Re: CV 45 From: <m.tanzler(a)healthcarecompany.at> MIME-Version: 1.0 Importance: High Content-Type: text/html Message-ID: <eea2bc38-dcf1-449b-82c5-d1336e43cf0a(a)SBS2K8.HCC.local> Return-Path: mta-hashcash(a)lists.lysator.liu.se Date: Tue, 7 Dec 2010 17:53:34 +0100 X-GFI-SMTP-Submission: 1 X-GFI-SMTP-HelloDomain: 81-188-133-95.pool.ukrtel.net X-GFI-SMTP-RemoteIP: 95.133.188.81

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mta-hashcash December 2010