I will also send this to the mailman admins, as obviously this message will be filtered by properly-acting  servers. The mailman system is not handling DKIM email properly. DKIM is an anti-mail forgery measure. Using DKIM, my server attests that mail coming from me - directly - must be from my own servers, or it should be rejected as below. Mailing list systems mus change the headers to work properly with DKIM. There is information online on how to get Mailman working properly with DKIM.

    Bruce
--------- Forwarded message ---------
From: <no-reply@mx39.antispamcloud.com>
Date: Thu, Dec 10, 2020 at 9:26 PM
Subject: DMARC Forensic Report for perens.com from IP 172.105.152.211
To: <bruce@perens.com>


A message claiming to be from you has failed the published DMARC
policy for your domain.

  Sender Domain: perens.com
  Sender IP Address: 172.105.152.211
  Received Date: Fri, 11 Dec 2020 06:26:52 +0100
  SPF Alignment: no
  DKIM Alignment: no
  DMARC Results: Reject

------ This is a copy of the headers that were received before the error
       was detected.

X-DKIM-Failure: bodyhash_mismatch
Received: from atlanta189.amsat.org ([172.105.152.211] helo=mail-01.amsat.org)
        by mx39.antispamcloud.com with esmtps (TLSv1.2:AES128-GCM-SHA256:128)
        (Exim 4.92)
        (envelope-from <amsat-bb-bounces@amsat.org>)
        id 1knaxA-00019o-7v
        for wa9kje-1@wa9kje.org; Fri, 11 Dec 2020 06:26:52 +0100
Received: from [172.19.199.2] (unknown [172.19.199.2])
        by mail-01.amsat.org (Postfix) with ESMTP id 836DD177182;
        Fri, 11 Dec 2020 05:26:37 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amsat.org; s=dkim;
        t=1607664397;
        h=from:from:reply-to:subject:subject:date:date:message-id:message-id:
         to:to:cc:cc:mime-version:mime-version:content-type:content-type:
         in-reply-to:in-reply-to:references:references:list-id:list-help:
         list-unsubscribe:list-subscribe:list-post;
        bh=bb/qU0QZ9Yjo3FBs5dMvAzbjoiUpUZj6uWiyNWnI/x4=;
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        0BLkAB30sFiAMKE2eKf4CyAvzAHx3T0=
ARC-Seal: i=2; cv=fail; a=rsa-sha256; d=mail-01.amsat.org; s=arc;
 t=1607664395;
 b=NdatL0vtGRWnWhE+rvBUnn82h4abNJw02PzOVCytHgczMU5hStU53ulVrMMHil+GBrMmF
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ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed;
 d=mail-01.amsat.org; s=arc; t=1607664395; h=from : sender : reply-to :
 subject : date : message-id : to : cc : mime-version : content-type :
 content-transfer-encoding : content-id : content-description :
 resent-date : resent-from : resent-sender : resent-to : resent-cc :
 resent-message-id : in-reply-to : references : list-id : list-help :
 list-unsubscribe : list-subscribe : list-post : list-owner :
 list-archive; bh=Af+yhXaFyJx9TjxkjmAS1vhD1BfQxwz3yUjPH3TGyRA=;
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 Kv0h4dCj4E8zQEHsK1FerkGrK8HRDZqRyfCPSjgRr55i3WhtJiWZcUsD5ECw==
ARC-Authentication-Results: i=2; mail-01.amsat.org; dkim=pass header.d=perens.com;
  arc=fail;
  dmarc=pass (Used From Domain Record) header.from=perens.com policy.dmarc=reject
Authentication-Results: mail-01.amsat.org; dkim=pass header.d=perens.com; arc=fail; dmarc=pass (Used From Domain Record) header.from=perens.com policy.dmarc=reject
Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d])
        by mail-01.amsat.org (Postfix) with ESMTPS id 7787F177057
        for <amsat-bb@amsat.org>; Fri, 11 Dec 2020 05:26:25 +0000 (UTC)
Received: by mail-pg1-x52d.google.com with SMTP id c12so5892821pgm.4
        for <amsat-bb@amsat.org>; Thu, 10 Dec 2020 21:26:25 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=perens.com; s=google;
        h=mime-version:references:in-reply-to:from:date:message-id:subject:to
         :cc;
        bh=Af+yhXaFyJx9TjxkjmAS1vhD1BfQxwz3yUjPH3TGyRA=;
        b=untn3cHjXWRD9ZRUWxJwI9kcVn7CzTwWqoysC0a1Lmon5QPn3eQRWccQDbq3oV+PP7
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         tQAvQmpo3yGKDb0HaPXBO24eGQuQ582yU7sA4=
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20161025;
        h=x-gm-message-state:mime-version:references:in-reply-to:from:date
         :message-id:subject:to:cc;
        bh=Af+yhXaFyJx9TjxkjmAS1vhD1BfQxwz3yUjPH3TGyRA=;
        b=Je9QVkXgKjyO6JWbwtWj4GnsC78+9WkPiDLfyRlrAK11mg6N3OfM1nu7/YSJD+HYo1
         Unhhtx6RgGo2NXZCpEtexxI1oo0Fqja20lDq3a+47fJF28WjrKZ10RswhDJoLRdZmhJM
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         ELNpjHsC3vchjmLY78ASTdKPzEf20WxIUk30AR+3CS5ky3q2GSBCyoBRhxaIx2URalB4
         lU1XrHyOJQiK0nT2VhftIuoSSxO6YBzFZNVUBmqWpzTysCYxkVGPICxBhfjiXx9Gd49G
         abPg==
X-Gm-Message-State: AOAM533E9qX5vxz3/r86mMM/WSkhEH/ZjCMeU3raKH8UvrEv/RU6YPQT
        xj3ajbIE6XszjC3EJ9fTRzSQXp9YiRQuoF3Kk6KsN6/Z0Eo=
X-Google-Smtp-Source: ABdhPJzSpXZpNDg1CFCFfzFYK+a0aneBaBsWNKsS5sYm7tnPrDaHmyzcnUu61v1joQcbHA/ym7CHaqRuyt1wWUCAboU=
X-Received: by 2002:a05:6a00:170a:b029:19d:afca:4704 with SMTP id
 h10-20020a056a00170ab029019dafca4704mr9978656pfc.7.1607664384660; Thu, 10 Dec
 2020 21:26:24 -0800 (PST)
MIME-Version: 1.0
References: <1270b31f-505d-c8ca-9693-79740eaac3a7@leikhim.com>
In-Reply-To: <1270b31f-505d-c8ca-9693-79740eaac3a7@leikhim.com>
From: Bruce Perens <bruce@perens.com>
Date: Thu, 10 Dec 2020 21:26:13 -0800
Message-ID: <CAK2MWOvp1VMZbVWSH4qntZwybRkg=WgyL5CDO4LXdFK4c=EH2Q@mail.gmail.com>
To: Joe Leikhim <rhyolite@leikhim.com>
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=amsat.org;
        s=arc; t=1607664386;
        h=from:from:reply-to:subject:subject:date:date:message-id:message-id:
         to:to:cc:cc:mime-version:mime-version:content-type:content-type:
         in-reply-to:in-reply-to:references:references:dkim-signature;
        bh=Af+yhXaFyJx9TjxkjmAS1vhD1BfQxwz3yUjPH3TGyRA=;
        b=lY+e66wlv0JAOd/OQDkgCdR+SLMwe7x/6xKebV+VXSQPsAgxzDUHA/dLhGg9Zr2zFs/CGe
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        uqmzkKYNtLassvZrIMAowIBjLdIcf+w=
ARC-Seal: i=1; s=arc; d=amsat.org; t=1607664386; a=rsa-sha256; cv=none;
        b=ElYFoFpDLfJyzFeuUuMRoTbSf/g+btqRD0xV+zM1VMtmkE3i9neBbEPbQcMqRqUEQT+c0D
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        0TtPLTuHV8yDRmHzmB+MXhP9WFZEVMI=
ARC-Authentication-Results: i=1;
        mail-01.amsat.org;
        dkim=pass header.d=perens.com header.s=google header.b=untn3cHj;
        spf=pass (mail-01.amsat.org: domain of bruce@perens.com designates 2607:f8b0:4864:20::52d as permitted sender) smtp.mailfrom=bruce@perens.com
Message-ID-Hash: STA7NVENWTVXB5THYNRPYMIYDNE5TXX5
X-Message-ID-Hash: STA7NVENWTVXB5THYNRPYMIYDNE5TXX5
X-MailFrom: bruce@perens.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header
CC: AMSAT BB <amsat-bb@amsat.org>
X-Mailman-Version: 3.3.2
Precedence: list
Subject: [AMSAT-BB] Re: Mail Server upgrade issues Gibberish
List-Id: AMSAT Bulletin Board Mailing List <amsat-bb.amsat.org>
Archived-At: <https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org/message/STA7NVENWTVXB5THYNRPYMIYDNE5TXX5/>
List-Archive: <https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org/>
List-Help: <mailto:amsat-bb-request@amsat.org?subject=help>
List-Post: <mailto:amsat-bb@amsat.org>
List-Subscribe: <mailto:amsat-bb-join@amsat.org>
List-Unsubscribe: <mailto:amsat-bb-leave@amsat.org>
Content-Type: multipart/mixed; boundary="===============8729765487569916164=="
Received-SPF: pass (mx39.antispamcloud.com: domain of amsat.org designates 172.105.152.211 as permitted sender) client-ip=172.105.152.211; envelope-from=amsat-bb-bounces@amsat.org; helo=mail-01.amsat.org;
X-SPF-Result: mx39.antispamcloud.com: domain of amsat.org designates 172.105.152.211 as permitted sender
X-DKIM-Status: pass /  / amsat.org / amsat.org /  / dkim
X-DKIM-Status: fail / bodyhash_mismatch / perens.com / perens.com /  / google



--
Bruce Perens - CEO at stealth startup. I'll tell you what it is eventually :-)