IETF Logo Mail Archive

[ietf-smtp] SMTP Response for Detected Spam (SRDS)

"Brotman, Alex" <Alex_Brotman@comcast.com> Fri, 14 January 2022 15:35 UTC

Return-Path: <Alex_Brotman@comcast.com>
X-Original-To: ietf-smtp@ietfa.amsl.com
Delivered-To: ietf-smtp@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 930223A2741 for <ietf-smtp@ietfa.amsl.com>; Fri, 14 Jan 2022 07:35:00 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.099
X-Spam-Level:
X-Spam-Status: No, score=-2.099 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=comcast.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 OlbH4jPlI6MB for <ietf-smtp@ietfa.amsl.com>; Fri, 14 Jan 2022 07:34:56 -0800 (PST)
Received: from mx0a-00143702.pphosted.com (mx0a-00143702.pphosted.com [148.163.145.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B60183A273E for <ietf-smtp@ietf.org>; Fri, 14 Jan 2022 07:34:55 -0800 (PST)
Received: from pps.filterd (m0156892.ppops.net [127.0.0.1]) by mx0a-00143702.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 20EFLN1I004436 for <ietf-smtp@ietf.org>; Fri, 14 Jan 2022 10:34:55 -0500
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.com; h=from : to : subject : date : message-id : content-type : content-transfer-encoding : mime-version; s=20190412; bh=4zwkl8GGLjpgt2HHPIFSRkMQvhifOBvbS6En0l0evsA=; b=YVzODVKrAFwGP9VRwPRsCFsYvzsxJGGT26atT66Eim4XNXGRJx7IV3rpsKY0cRNcHmNE KBWKAKFfqfMrPIVM+2r9DNDpscAeXBAExwAOiqdA0Q2uw8A0UegtFV112GVLOz3SMegq KkDXy0XqlOUc0utCMSEZ9YVB/w1mSWGPA4sZSs2JdlAJfrpxrknd8qen09WCfA6RjKNf +7zHBA2CSkGBYf3L0N3fup7lvhgZR3uyk76+lgSU45RC/Bh5QV1OShnfvtw1l7bxAY2K MfdT22PeIx65kAvMvoLCbHE0bKrMfDy27OIV4Xy2bayoo3k1owNOR0A7J7gGQCOHr3Qp zQ==
Received: from pacdcexop03.cable.comcast.com (dlppfpt-wc-1p.slb.comcast.com [96.99.226.136]) by mx0a-00143702.pphosted.com (PPS) with ESMTPS id 3djsefq3nf-22 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for <ietf-smtp@ietf.org>; Fri, 14 Jan 2022 10:34:54 -0500
Received: from PACDCEXOP01.cable.comcast.com (24.40.1.148) by PACDCEXOP03.cable.comcast.com (24.40.1.150) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Fri, 14 Jan 2022 10:34:26 -0500
Received: from PACDCEXEDGE01.cable.comcast.com (76.96.78.71) by PACDCEXOP01.cable.comcast.com (24.40.1.148) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.986.14 via Frontend Transport; Fri, 14 Jan 2022 10:34:26 -0500
Received: from NAM02-DM3-obe.outbound.protection.outlook.com (104.47.56.41) by webmail.comcast.com (76.96.78.71) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Fri, 14 Jan 2022 10:34:21 -0500
Received: from MN2PR11MB4351.namprd11.prod.outlook.com (2603:10b6:208:193::31) by BN6PR11MB1713.namprd11.prod.outlook.com (2603:10b6:404:3c::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4888.9; Fri, 14 Jan 2022 15:34:19 +0000
Received: from MN2PR11MB4351.namprd11.prod.outlook.com ([fe80::90bb:db8:f9ab:4e6b]) by MN2PR11MB4351.namprd11.prod.outlook.com ([fe80::90bb:db8:f9ab:4e6b%6]) with mapi id 15.20.4888.012; Fri, 14 Jan 2022 15:34:19 +0000
From: "Brotman, Alex" <Alex_Brotman@comcast.com>
To: ietf-smtp <ietf-smtp@ietf.org>
Thread-Topic: SMTP Response for Detected Spam (SRDS)
Thread-Index: AdgJW5s4CJeX1rEfSI+mKyUpPpB4tA==
Date: Fri, 14 Jan 2022 15:34:19 +0000
Message-ID: <MN2PR11MB4351843B8D91E6B983190549F7549@MN2PR11MB4351.namprd11.prod.outlook.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 558b456d-0e50-4ec9-9f15-08d9d77354d1
x-ms-traffictypediagnostic: BN6PR11MB1713:EE_
x-microsoft-antispam-prvs: <BN6PR11MB17131AA455C0949FEE3A489EF7549@BN6PR11MB1713.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:8882;
x-ms-exchange-senderadcheck: 1
x-ms-exchange-antispam-relay: 0
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: 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
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR11MB4351.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(71200400001)(52536014)(66556008)(122000001)(2906002)(66446008)(9686003)(38100700002)(83380400001)(76116006)(38070700005)(66476007)(316002)(64756008)(82960400001)(55016003)(8936002)(508600001)(8676002)(6916009)(33656002)(6506007)(66946007)(966005)(86362001)(5660300002)(186003)(7696005)(4744005); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: 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
arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=O9ltKuoFuduUJVXhwb+5c9gDx5NXJhcwhdjL0/2k+lRQ700OmVwBKFvJ8ightKL+/4S8s9cr0uyntUa3IP7NZFkSVjJChSWNECjy0NvK6qsY281pqXzZzT3zLNa+9YTp4F31rbaYhzM34/Hh1ctv8fpNEGJ4RzzO65WmPh4cmnx4iGcdj6uo7vQF4LETx42JwNpsYrKDFcmKEBVoOeF7CNy7IOKpBKxMwHSvkzxcO0kZeW6T6EKaam28AZ/EyOVBCT0Wd/CkU2c/ZptbY60gpZ6HZW0zyzWxZQL+tk89NK1wKBRfDTjacX/K9wzkRn1KE25pjw1zCd9fPgMmC/R3mA==
arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=QbcOeVJ+NPOeb1q9DAwKpRptJu4dQjrWb2qh/q4bEzg=; b=aUWLtYkNBD6dm7jE+Kpve8suA9PjMpBokijy2HM5Enr4VoV93z2ilVZ47DKv34BzoromnCI7y7A/iB0p6JxqgIOD5VghESs9lsntoMevgV5BJYNh21d5f840WcMaXFFQvO7QlOsFZv/TmXsDjPmuk6NVEwFFgo1Oot4Vb4FPhq7acafskg2o4KJWi5Qt+tnA8xyuZCf2oRc4FKMigbfhS1mePptRQDNgW78KsVFPvcnD3zz2Ip3jiOLYOe5nc3seBiHbDJDWNEabTYFFD7RtW70hsRJvA8iLKHONyApIGwzD3BwwPVqCdsOzg9yvZi6lV4rkoJudA6nWori5njSnsA==
arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=comcast.com; dmarc=pass action=none header.from=comcast.com; dkim=pass header.d=comcast.com; arc=none
x-ms-exchange-crosstenant-authas: Internal
x-ms-exchange-crosstenant-authsource: MN2PR11MB4351.namprd11.prod.outlook.com
x-ms-exchange-crosstenant-network-message-id: 558b456d-0e50-4ec9-9f15-08d9d77354d1
x-ms-exchange-crosstenant-originalarrivaltime: 14 Jan 2022 15:34:19.2464 (UTC)
x-ms-exchange-crosstenant-fromentityheader: Hosted
x-ms-exchange-crosstenant-id: 906aefe9-76a7-4f65-b82d-5ec20775d5aa
x-ms-exchange-crosstenant-mailboxtype: HOSTED
x-ms-exchange-crosstenant-userprincipalname: iMw5MTwe8Jx7Ou2/qi5qyViK4V30AeYm1ViV+BPwhKt9CXZhL6Qsdchfye4c72orZNI/lW+l9hoBwI+qB0t+xBEyEQf96i6CeA4nh9Gtkis=
x-ms-exchange-transport-crosstenantheadersstamped: BN6PR11MB1713
x-originatororg: comcast.com
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-CFilter-Loop: Forward AAETWS
X-Proofpoint-GUID: 5OAyB1SXIOMRi5LPc0MCHv9BiWzmD1sk
X-Proofpoint-ORIG-GUID: 5OAyB1SXIOMRi5LPc0MCHv9BiWzmD1sk
X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-14_06,2022-01-14_01,2021-12-02_01
X-Proofpoint-Spam-Reason: safe
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-smtp/Ii5LiKuSDUDG9kbhXGa4jLz2Xl4>
Subject: [ietf-smtp] SMTP Response for Detected Spam (SRDS)
X-BeenThere: ietf-smtp@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Discussion of issues related to Simple Mail Transfer Protocol \(SMTP\) \[RFC 821, RFC 2821, RFC 5321\]" <ietf-smtp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf-smtp>, <mailto:ietf-smtp-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf-smtp/>
List-Post: <mailto:ietf-smtp@ietf.org>
List-Help: <mailto:ietf-smtp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf-smtp>, <mailto:ietf-smtp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 14 Jan 2022 15:35:01 -0000

Hey folks,

I had originally sent this over to dispatch, though Murray and John felt it better to discuss here.  I thought it might help the general ecosystem if there were a method by which receivers could give an in-line response to a sender that the message they're attempting to deliver is believed to be spam/malicious.  Additionally, I thought it would be good to create a new code so that it could be more easily identified by the sending party.  While I understand there's some fear that this could be misused by spammers, restricting it responsible parties may help there, and it could help responsible parties identify abusive parties within their platform more quickly.

https://datatracker.ietf.org/doc/draft-brotman-srds/
https://www.ietf.org/archive/id/draft-brotman-srds-00.txt

It's rather short (the only sample I found was also rather short), but I welcome comments or thoughts.  Thanks for your time.

--
Alex Brotman
Sr. Engineer, Anti-Abuse & Messaging Policy
Comcast

v2.23.0 | Report a Bug | By Email