I didn’t chech the header.
But loop.de should have its own signature.
Debian list server rewrite envelope address to list adress due to SRS requirements. But message header address is not changed as well as message body (debian list seems not modifying message body), so DKIM for loop.de will be valid, then DMARC for loop.de will pass as well.


On 2024-07-05 04:54, Detlef Vollmann wrote:
Isn't this the usual DKIM problem with lists?
The From: has @loop.de, but the sender and DKIM signature
is from lists.debian.org.

That's why most lists these days rewrite the From: header.

  Detlef

On 7/4/24 14:24, Hans wrote:
Me again, sorry.


Now I got my last mail back with the spam tag!


Subject:
Re: *****SPAM***** [SOLVED] Re: This is a testmail!


This is the header:


--------------------
X-Spam-Flag: YES
X-SPAM-FACTOR: DKIM
X-Envelope-From: [email protected]
DMARC-Filter:
  OpenDMARC Filter v1.4.1 mail39c50.megamailservers.eu 464C5Iek122979
Authentication-Results: mail39c50.megamailservers.eu;
  dmarc=none (p=none dis=none) header.from=loop.de
Authentication-Results: mail39c50.megamailservers.eu;
  spf=none smtp.mailfrom=lists.debian.org
Authentication-Results: mail39c50.megamailservers.eu;
  dkim=fail reason="signature verification failed" (1024-bit key)
header.d=megamailservers.eu [email protected] header.b="QLjumGn/" Return-Path: <[email protected]>
Received:
  from bendel.debian.org (bendel.debian.org [82.195.75.100]) by
mail39c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 464C5Iek122979 for
  <[email protected]>; Thu, 4 Jul 2024 12:05:21 +0000
Received:
from localhost (localhost [127.0.0.1]) by bendel.debian.org (Postfix) with
  QMQP id EA3E420682; Thu,  4 Jul 2024 12:05:15 +0000 (UTC)
X-Mailbox-Line:
  From [email protected]  Thu Jul  4 12:05:15 2024
Old-Return-Path: <[email protected]>
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on bendel.debian.org X-Spam-Status: No, score=-10.5 required=4.0 tests=DKIM_INVALID,DKIM_SIGNED, FOURLA,KHOP_HELO_FCRDNS,LDOSUBSCRIBER,LDO_WHITELIST autolearn=unavailable
  autolearn_force=no version=3.4.6
X-Original-To: [email protected]
Delivered-To: [email protected]
Received:
from localhost (localhost [127.0.0.1]) by bendel.debian.org (Postfix) with
  ESMTP id C18E42067A for <[email protected]>; Thu,
   4 Jul 2024 12:05:07 +0000 (UTC)
X-Virus-Scanned: at lists.debian.org with policy bank en-ht
X-Amavis-Spam-Status: No,
  score=-6.301 tagged_above=-10000 required=5.3 tests=[BAYES_00=-2,
DKIM_INVALID=0.1, DKIM_SIGNED=0.1, FOURLA=0.1, KHOP_HELO_FCRDNS=0.399,
  LDO_WHITELIST=-5] autolearn=ham autolearn_force=no
Received:
  from bendel.debian.org ([127.0.0.1]) by localhost (lists.debian.org
  [127.0.0.1]) (amavisd-new,
  port 2525) with ESMTP id CNGEsE8xgvQ4 for
<[email protected]>; Thu, 4 Jul 2024 12:05:03 +0000 (UTC)
X-policyd-weight:
NOT_IN_SBL_XBL_SPAMHAUS=-1.5 HELO_IP_IN_CL_SUBNET=-1.2 (check from: .loop. -
  helo: .mail194c50.megamailservers. - helo-domain: .megamailservers.)
  FROM/MX_MATCHES_HELO(DOMAIN)=-2; rate: -4.7
Received:
  from mail194c50.megamailservers.eu (mail208c50.megamailservers.eu
[91.136.10.218]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by bendel.debian.org (Postfix) with ESMTPS id EC67D20677 for <[email protected]>; Thu,
   4 Jul 2024 12:05:02 +0000 (UTC)
X-Authenticated-User: [email protected]
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1720094700; bh=5Um9/MplAQNd+svZJOunmBGElnorPOi9odLzGqxgObQ=;
  h=From:To:Subject:Date:In-Reply-To:References:From;
  b=QLjumGn/60xFVhN9BUbajEg0uTOZxqi/Uz8jodz7E1EE2Hi7W3VtjJFW4LGmbJGnC
  Lt7Nym0B3iEmO+1/fxpnDfmt1lRnzu+Q65akTEd8eaEHbj8G7yo5OCpI4oVjRr7q9o
  pn0upeaUIrxnepbAwXeozeebIuTSx2zuaH0xvL30=
Feedback-ID: hans.ullrich@lo
Received:
from protheus2.localnet (a89-183-193-109.net-htp.de [89.183.193.109]) (authenticated bits=0) by mail194c50.megamailservers.eu (8.14.9/8.13.1) with
  ESMTP id 464C4rxR025870 (version=TLSv1/SSLv3
  cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for
  <[email protected]>; Thu, 4 Jul 2024 12:04:55 +0000
From: Hans <[email protected]>
To: [email protected]
Subject: *****SPAM***** [SOLVED] Re: This is a testmail!
Date: Thu, 04 Jul 2024 14:04:53 +0200
Message-ID: <2408526.NG923GbCHz@protheus2>
In-Reply-To: <46505217.fMDQidcC6G@protheus2>
References:
  <3645068.R56niFO833@protheus2> <[email protected]>
  <46505217.fMDQidcC6G@protheus2>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="UTF-8"
X-VADE-SPAMSTATE: clean
X-VADE-SPAMSTATE: clean
X-VADE-SPAMSCORE: 0
X-VADE-SPAMSCORE: 0
X-VADE-SPAMCAUSE:
gggruggvucftvghtrhhoucdtuddrgeeftddrudelgdegiecutefuodetggdotefrodftvfcurfhrohhfihhlvgem
ucfjqffuvffqrffktedpgffpggdqveehtdenuceurghilhhouhhtmecufedtudenucenucfjughrpefhvffufffkjgh
fggfgtgejudeftdfjphegsehtufertddttdejnecuhfhrohhmpefjrghnshcuoehhrghnshdruhhllhhrihgthhesl
hhoohhprdguvgeqnecuggftrfgrthhtvghrnhephfdvudekheefueevieelgefftdfhtedvlefgfefhieevveejud
elhffhleethfeknecukfhppeekvddrudelhedrjeehrddutddtpdekledrudekfedrudelfedruddtleenucevlhh
ushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeekvddrudelhedrjeehrddutddtpdhhvghlohepsg
gvnhguvghlrdguvggsihgrnhdrohhrghdpmhgrihhlfhhrohhmpegsohhunhgtvgdquggvsghirghnqdhus
hgvrhephhgrnhhsrdhulhhlrhhitghhpehlohhophdruggvsehlihhsthhsrdguvggsihgrnhdrohhrghdpnhg
spghrtghpthhtohepuddprhgtphhtthhopehhrghnshdruhhllhhrihgthheslhhoohhprdguvg
X-VADE-SPAMCAUSE:
gggruggvucftvghtrhhoucdtuddrgeeftddrudelgdegjecutefuodetggdotefrodftvfcurfhrohhfihhlvgem
ucfjqffuvffqrffktedpqfgfvfdpgffpggdqveehtdenuceurghilhhouhhtmecufedtudenucenucfjughrpefhvf
fufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepjfgrnhhsuceohhgrnhhsrdhulhhlrhhitghhsehlohho
phdruggvqeenucggtffrrghtthgvrhhnpeefvdethfeludejieeljeeugefgieekheeitdfggfehuedvvdfhjedute
ekkedtvdenucfkphepkeelrddukeefrdduleefrddutdelnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrgh
mpehinhgvthepkeelrddukeefrdduleefrddutdelpdhhvghlohepphhrohhthhgvuhhsvddrlhhotggrlhhnv
ghtpdhmrghilhhfrhhomhephhgrnhhsrdhulhhlrhhitghhsehlohhophdruggvpdhnsggprhgtphhtthhope
dupdhrtghpthhtohepuggvsghirghnqdhushgvrheslhhishhtshdruggvsghirghnrdhorhhg
X-Rspamd-Status: No, score=1.59
X-Rspamd-Result: default: False [1.59 / 6.00];
  R_DKIM_REJECT(1.00)[megamailservers.eu:s=maildub]; CTE_CASE(0.50)[];

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