DKIM: Internal error / Cannot extract the list identifier from the List-Id header

[SilmorSenedlen]

Good day.
I got "Internal error" on that message:

Headers

Return-Path: <postmaster@spsndr.com>
Delivered-To: xxxxx@vivaldi.net
Received: from mxi-2.vivaldi.net ([10.10.10.99])
	by imap.viv.dc01 with LMTP
	id wGvMKti7m2ARRgAADDaM4Q
	(envelope-from <postmaster@spsndr.com>)
	for <xxxxx@vivaldi.net>; Wed, 12 May 2021 11:28:24 +0000
Received: from localhost (localhost [127.0.0.1])
	by mxi-2.vivaldi.net (Postfix) with ESMTP id AA0E9BD620
	for <xxxxx@vivaldi.net>; Wed, 12 May 2021 11:28:24 +0000 (UTC)
X-Virus-Scanned: Debian amavisd-new at vivaldi.net
X-Spam-Flag: NO
X-Spam-Score: -2.087
X-Spam-Level:
X-Spam-Status: No, score=-2.087 tagged_above=-9999 required=6.31
	tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1,
	DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,
	HEADER_FROM_DIFFERENT_DOMAINS=1, HTML_MESSAGE=0.001,
	MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_BLOCKED=0.001,
	SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_TVD_MIME_NO_HEADERS=0.01,
	URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from mxi-2.vivaldi.net ([IPv6:::1])
	by localhost (mxi-2.viv.dc01 [IPv6:::1]) (amavisd-new, port 10024)
	with ESMTP id hfFK3QEimMwU for <xxxxx@vivaldi.net>;
	Wed, 12 May 2021 11:28:22 +0000 (UTC)
Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=213.109.77.167; helo=mx8.spsndr.com; envelope-from=postmaster@spsndr.com; receiver=<UNKNOWN> 
Authentication-Results: mxi-2.vivaldi.net; dmarc=pass (p=quarantine dis=none) header.from=intickets.ru
Authentication-Results: mxi-2.vivaldi.net; spf=pass smtp.mailfrom=postmaster@spsndr.com
DKIM-Filter: OpenDKIM Filter v2.11.0 mxi-2.vivaldi.net 670B0BD033
Authentication-Results: mxi-2.vivaldi.net;
	dkim=pass (1024-bit key; unprotected) header.d=intickets.ru header.i=@intickets.ru header.a=rsa-sha256 header.s=sign header.b=YgY2IFzc;
	dkim=pass (1024-bit key; unprotected) header.d=spsndr.com header.i=@spsndr.com header.a=rsa-sha256 header.s=sign header.b=LBCv0Wyd;
	dkim-atps=neutral
X-policyd-weight:  NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 (only DNSBL check requested)
Received: from mx8.spsndr.com (mx8.spsndr.com [213.109.77.167])
	by mxi-2.vivaldi.net (Postfix) with ESMTPS id 670B0BD033
	for <xxxxx@vivaldi.net>; Wed, 12 May 2021 11:28:20 +0000 (UTC)
Content-Type: multipart/alternative;
 boundary="===============3495852810030413337=="
MIME-Version: 1.0
From: =?utf-8?q?INTICKETS=2ERU?= <info@intickets.ru>
Precedence: bulk
Feedback-ID: 14284362:6608875:es:SP
List-ID: 89268557@spsndr.com
Subject: =?utf-8?b?0JjQvdGC0LjQutC10YLRgSDRg9Cy0LXQtNC+0LzQu9GP0LXRgiDQviDQv9C10YDQtdC90L7RgdC1INC80LXRgNC+0L/RgNC40Y/RgtC40Y8u?=
Date: Wed, 12 May 2021 11:28:19 +0000 (GMT)
Sender: info@intickets.ru
X-Authenticated-User: 5c6e485063f081200d2c2ff9904a678d@intickets.ru
Errors-To: postmaster@spsndr.com
X-Complaints-To: abuse@spsndr.com
To: xxxxx@vivaldi.net
Message-Id: <qszrv7-1015bv-p4@spsndr.com>
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intickets.ru; 
 i=@intickets.ru; q=dns/txt; s=sign; t=1620818899; 
 x=1620854899; h=subject : from : to : message-id : cc; 
 bh=m5hYdS7dS0ixsyOJXK3n/k46pRJJQasLYy0/RTcbRg4=; 
 b=YgY2IFzc4AsApolWKiMXxOuYwpkHAUMaim22DkCZjQJmKssBK1z/DMiW
 RX5J+/eTyvC+A578UqQ0Sndl3gXi3C6VFY+5fxTp5NYctEeZB5n/ZCwRpQ
 xxNORxsAUW9kro52J+tpUSTyNIam0djNQtJ7VORbMKadONEvGniBF4khY=
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=spsndr.com; 
 i=@spsndr.com; q=dns/txt; s=sign; t=1620818899; 
 x=1620854899; h=subject : from : to : message-id : cc; 
 bh=m5hYdS7dS0ixsyOJXK3n/k46pRJJQasLYy0/RTcbRg4=; 
 b=LBCv0WydEQ0DM9pOXVJ0dk3mSumdLauuhABcRfphLrCla7bQjNyW+joI
 3zWUeNVJBW3Rhe/r8ZFTBd5pTZY6xfsmTudbE6ijBNG7q+c3Ei6FoxVRju
 ov9DAm79Zn+zePpIznb8KO4C/DvXfFNbkKL05coXrP4JBkTEsckIG/sKU=

Debug info:

DKIM_Verifier.background	FATAL	 Unexpected error during verifyMessage 
Error: Cannot extract the list identifier from the List-Id header.

parseListIdHeader moz-extension://3c77a0e6-0efe-4d74-859e-4604b92e340d/modules/msgParser.mjs.js:191
verify moz-extension://3c77a0e6-0efe-4d74-859e-4604b92e340d/modules/authVerifier.mjs.js:135
verifyMessage moz-extension://3c77a0e6-0efe-4d74-859e-4604b92e340d/content/background.mjs.js:133
	
background.mjs.js:133:7

Any clues what's the reason?

DKIM Verifier 4.0.0 / Thunderbird 78.10.1 x64 / Windows 10 (1809) x64

[lieser]

Thanks a lot for reporting.

The List-Id header has an invalid format. Unlike the e.g. From address it must always be in angle-brackets (<, >) https://datatracker.ietf.org/doc/html/rfc2919#section-3.

Even if I am a big fan of strict parsing, depending on how common this violation is we may still need to accept that violation. But similar to #238, it definitely needs a better error message.

[SilmorSenedlen]

Understood.
Thanks for explanation.

[lieser]

The next version will simply ignore an invalid list id.