Hashcash-generation/check for IDN-domains

[asjo@koldfront.dk (Adam Sjøgren)]

  Hi.


I (sort-of) recently acquired the domain 'sjøgren.org'.

I just tried sending an email to adam@sjøgren.org - Gnus nicely asked
me if it should translate sjøgren.org to xn--sjgren-cya.org, and I
happily accepted.

The email arrived, but was split into the nnml:bogus group and an
error-message occured. The following is the messages I get if I go to
nnml:bogus and do B q on the email (after setting gnus-verbose to 10):

 spam-split: widening the buffer (spam-use-crm114 requires it)
 spam-split: calling the spam-check-hashcash function
 Error in `nnmail-split-methods'; using `bogus' mail group
 This message would go to bogus

It seems that the hashcash generated is somehow invalid and/or the
check is (too) fragile. I'm not sure which.

The entire email is:

#v+
X-From-Line: asjo@koldfront.dk  Tue Sep 27 14:34:08 2005
Return-Path: <asjo@koldfront.dk>
X-Original-To: asjo@topper.koldfront.local
Delivered-To: asjo@topper.koldfront.local
Received: from virgil.koldfront.dk (virgil.koldfront.local [192.168.1.111])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by topper.koldfront.dk (Postfix) with ESMTP id 60489F0000E3
	for <asjo@topper.koldfront.local>; Tue, 27 Sep 2005 14:34:08 +0200 (CEST)
Received: by virgil.koldfront.dk (Postfix)
	id 50B7F3A8AF59; Tue, 27 Sep 2005 14:37:14 +0200 (CEST)
Delivered-To: asjo@koldfront.dk
Received: by virgil.koldfront.dk (Postfix, from userid 1010)
	id 4F0A93A8AF5A; Tue, 27 Sep 2005 14:37:14 +0200 (CEST)
Received: from topper.koldfront.dk (gateway.koldfront.dk [192.168.1.1])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by virgil.koldfront.dk (Postfix) with ESMTP id D769E3A8AF59
	for <adam@xn--sjgren-cya.org>; Tue, 27 Sep 2005 14:37:13 +0200 (CEST)
Received: by topper.koldfront.dk (Postfix, from userid 1000)
	id AB77AF0000E3; Tue, 27 Sep 2005 14:34:06 +0200 (CEST)
From: asjo@koldfront.dk (Adam =?iso-8859-1?Q?Sj=F8gren?=)
To: adam@xn--sjgren-cya.org
Subject: Test
Organization: koldfront - analysis & revolution, Copenhagen, Denmark
X-Face: )qY&CseJ?.:=8F#^~GcSA?F=9eu'{KAFfL1C3/A&:nE?PW\i65"ba0NS)97,Q(^@xk}n4Ou
 rPuR#V8I(J_@~H($[ym:`K_+]*kjvW>xH5jbgLBVFGXY:(#4P>zVBklLbdL&XxL\M)%T}3S/IS9lMJ
 ^St'=VZBR<gm`!Dj`dIpp?+$"$l_'JKDN\w-jB;fo0Qy}Tbw
X-Hashcash: =?iso-8859-1?Q?1=3A24=3A050927=3Aadam=40sj=F8gren=2Eorg=3A=3A+?=
 =?iso-8859-1?Q?OOJ2Vgcu8oOshd2=3A0ZBhK?=
Date: Tue, 27 Sep 2005 14:34:01 +0200
X-Gnus-Mail-Source: file:/var/mail/asjo
Message-ID: <878xxid70m.fsf@koldfront.dk>
User-Agent: Gnus/5.110004 (No Gnus v0.4) XEmacs/21.4.17 (linux)
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
X-Spam-Checker-Version: SpamAssassin 3.0.3 on virgil.koldfront.dk
X-Spam-Level: 
X-Spam-Status: No, score=-6.1 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 
	autolearn=ham version=3.0.3
Lines: 6
Xref: topper bogus:19

1-2

-- 
 "Vi falder samme vej eller ej"                               Adam Sjøgren
                                                         asjo@koldfront.dk



#v-

It looks like the hashcash-header was qp-encoded due to the 'ø' in the
domain and this somehow confuses hashcash.el when checking it?


  Best regards,

-- 
 "Vi falder samme vej eller ej"                               Adam Sjøgren
                                                         asjo@koldfront.dk