IETF Logo Mail Archive

Re: [dmarc-ietf] Response to a claim in draft-crocker-dmarc-author-00 security considerations

Brandon Long <blong@google.com> Mon, 20 July 2020 23:14 UTC

Return-Path: <blong@google.com>
X-Original-To: dmarc@ietfa.amsl.com
Delivered-To: dmarc@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E5F303A091D for <dmarc@ietfa.amsl.com>; Mon, 20 Jul 2020 16:14:25 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -17.599
X-Spam-Level:
X-Spam-Status: No, score=-17.599 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, ENV_AND_HDR_SPF_MATCH=-0.5, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_DEF_SPF_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=google.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sKY7zX81AEke for <dmarc@ietfa.amsl.com>; Mon, 20 Jul 2020 16:14:24 -0700 (PDT)
Received: from mail-vs1-xe29.google.com (mail-vs1-xe29.google.com [IPv6:2607:f8b0:4864:20::e29]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E24983A0914 for <dmarc@ietf.org>; Mon, 20 Jul 2020 16:14:23 -0700 (PDT)
Received: by mail-vs1-xe29.google.com with SMTP id p25so9410501vsg.4 for <dmarc@ietf.org>; Mon, 20 Jul 2020 16:14:23 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=M0biaHuq++YRZwsIvS94gyXRn8k0sPxlFQoi+fTro3Q=; b=V/YSw3FVDVyBG9IrZ7H9v9SOhMtTX0baVkPzBaPnjMAlVsAWrSwsoRW+ejdSfsfb44 QNtkS5ghkzfcxGUX1fAi94Rzyout750I/31lXh3sBYJ2JmmpTXrYihHRAazfyXfPrUx1 FPDB9+7e5sM2MsGjUsQ4JBgP1Y5xaMPpIzCwo8sruHkhDyafG6YGgbfk+34ijxePCBSb A/3YNlXLAQCgy6ghZCXjVgBOGNSEvqVu7DAy5i8JwvVgJPBwNPfImWauOXD4Rp3pC+6G Lhbm2aRaOcP+UA6HC5igW44P7tmFRBlnY7+0Zc8fPod2trKfCHF8U2ru82vD8Csvy51l SWdQ==
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=M0biaHuq++YRZwsIvS94gyXRn8k0sPxlFQoi+fTro3Q=; b=KwMm0pB5fAMNeenoDeLCKfFfyCtWVkNq5CipZyCn5c3n+nZvG7yff+tELCMSpBypaP ohrO2zOmhpsvXBTZ7C89zv1da1xeQ4mh5H9tX2XuHhX3bgk0lOpOWtltOfyrcSSMGUBO nTE5ubxGc7cWvZoVVNUX/lF7zAEpIgAmmhEUXKONFfnct+B+D7gUdanf1gNKMaSpwivs FfjBtFsc/z1uxvmC/G27mP3JhacP+n8e9JZQwXUhUi9XhpH2ebsNI6dZw+l0+ulnMZlN mZOvnm3QD5bhJddlDrAb7fllreOC+McpzSngebPBc3N4+qCohlgCgdSncX21steKW2Tr LHRQ==
X-Gm-Message-State: AOAM530izMxJzmbTmLgJmybAcW654ESxIM46Dqn+hVOF8Kxzx0N8zs9j KRWn1ONVGv/92HiVxK4AWge78CQe9gN9UWCDO1LAOJU=
X-Google-Smtp-Source: ABdhPJyaNLAFidq9baupTC+zi3ueOXisMUN/Rrz/1Z38Et9ppDQIImMGMUwHHCYm3meHeWbo2pXgyS0834rIwyWpMpk=
X-Received: by 2002:a67:6281:: with SMTP id w123mr17460044vsb.114.1595286862181; Mon, 20 Jul 2020 16:14:22 -0700 (PDT)
MIME-Version: 1.0
References: <20200719144650.E65433A0475@ietfa.amsl.com>
In-Reply-To: <20200719144650.E65433A0475@ietfa.amsl.com>
From: Brandon Long <blong@google.com>
Date: Mon, 20 Jul 2020 16:14:09 -0700
Message-ID: <CABa8R6s3AuOJ8ht1=9biWSL8tWT9=CY7FGSSkp0=Ey4q5cmXLg@mail.gmail.com>
To: "Douglas E. Foster" <fosterd@bayviewphysicians.com>
Cc: IETF DMARC WG <dmarc@ietf.org>
Content-Type: multipart/mixed; boundary="000000000000bcf42905aae7aa11"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/fy8iQl3zHhbYZJ6L06yZNJrFFxY>
Subject: Re: [dmarc-ietf] Response to a claim in draft-crocker-dmarc-author-00 security considerations
X-BeenThere: dmarc@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Domain-based Message Authentication, Reporting, and Compliance \(DMARC\)" <dmarc.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dmarc>, <mailto:dmarc-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dmarc/>
List-Post: <mailto:dmarc@ietf.org>
List-Help: <mailto:dmarc-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dmarc>, <mailto:dmarc-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 20 Jul 2020 23:14:26 -0000

The decision is complicated.  Ie, from this thread, John's spoof didn't get
caught (but note the image isn't his) but Dave & Douglas were treated
differently:



On Sun, Jul 19, 2020 at 7:47 AM Douglas E. Foster <
fosterd@bayviewphysicians.com> wrote:

>
> Yes, Gmail is a win for Dave.   User has to hover to see the from address,
> instead of friendly name, except when the TO does not match the recipient.
>
>
>
> _______________________________________________
> dmarc mailing list
> dmarc@ietf.org
> https://www.ietf.org/mailman/listinfo/dmarc
>

v2.23.0 | Report a Bug | By Email