issue with sending outbound mail to yahoo

Question

hi we have been unable to send mail to yahoo.com since implementing a dmarc record in our environment.

the non-deliverable we are getting back is the following :

Status code: 550 5.0.350

I opened a ticket with Microsoft support but they just told me it's a yahoo issue. I don't really have any way of contacting yahoo.

How can i resolve this ? Is there anything else i can do on my end?

Here is the original message header - any clues?

Original Message Headers  
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none;  
 b=je/i9X2obSUaDR3ZEfVPxDSnJ5D+DjoBJxFE+p8VBaOQVUSOJZuIxoii6FXPIHjJDo9TdKN+Vge8jBB9J/PirIDKroZ9Vrr8XYwGLvTnURpxqCGYQ2ua/8TeTSU4nCDOicEEFWprbWp/sMioAeZuoR55V8vPah3wLqzsLd94Emy4Skn18sOS1aCpoOuO2qYtvy/yQhdf6v6ansfqwDbpmNesqrRujtwL2JqNGaz5Blu9bSzgHdi1lcWiPVpDTqV3dfdrsZFtZnz62IqSMuqvzt6FvVxib972rD1A5siMESAOHPwAb/dpLlwY6bKeOtVVcGgS8MtaQkLUiLOkGo+1nw==  
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=Qcy0MA05t4uFWfuET4WiUZTM2TOso38nn/3TcmdMbIA=;  
 b=oXpjRgA8rAu1mlvIuKcDOkM+igtqoSlKg3aSBH+xwj1g/B9ZTboITrCxQQKpNa95JcofwTaoyKBwjfNgPNQgRyh8PrzzsnClCn3/6PxrxaZpEaI5f3niZg/MGoEk71TW3tK9855HGt9z04NhIvpfNPqDWsvfe1Ic+nC/ysm9TdJ26xNqtnlnnD0SxaskmhFA27BiHMXl7tPWlooKl0c9tLyMp/KuTxZUS5sA/plBVD9ilOcNDvSOZN+65Gnpzifa8daROGX7LJYJm1VGToXUnbUGzvESuRi+8uBC8WDw3/I1rAOBNHZo6YOnsZtF3sAiIHECrsDVWRlYAVpd3yj6sA==  
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass  
 smtp.mailfrom=CONTOSO.COM; dmarc=pass action=none  
 header.from=CONTOSO.COM; dkim=pass header.d=CONTOSO.COM; arc=none  
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=CONTOSO.COM;  
 s=selector1;  
 h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;  
 bh=Qcy0MA05t4uFWfuET4WiUZTM2TOso38nn/3TcmdMbIA=;  
 b=gFvGgscqjiV1zS0xxfozs9GghAUK1SKH3cu5NmFx0KY2iOoWtZdnQrBWhHQKP9xd9de6rZx081+LwMNItWKo4HGhkWX1SV/pU7LvDhmnKEuVtZ/xeAJAH53vHaUtofchky7RiRuQH5dbmwWUqMSYmzeFtqslNe1SzZjfZx52T3VVCfvxeuJ9VYThuIafcCirYDZ1KvMfdgUFBzUNyDAyrcOycxTAcqCRnWr6u2TA8Y20USGmgWGBBhjdeAhgP5L+Ltwk17zJ0bViQn1FLU6cj8kVsHp7C0O6YxYwyNCX6D9A3ws5XoFvQ5kUY5A4/pBHZaiaKZpM4wIQOyxJmn0gcg==  
Received: from QB1PR01MB2897.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:c00:3f::12)  
 by YQBPR0101MB5541.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:c01:45::21) with  
 Microsoft SMTP Server (version=TLS1_2,  
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5123.31; Mon, 4 Apr  
 2022 16:08:13 +0000  
Received: from QB1PR01MB2897.CANPRD01.PROD.OUTLOOK.COM  
 ([fe80::285f:54f2:3048:bda4]) by QB1PR01MB2897.CANPRD01.PROD.OUTLOOK.COM  
 ([fe80::285f:54f2:3048:bda4%7]) with mapi id 15.20.5123.031; Mon, 4 Apr 2022  
 16:08:11 +0000  
From: username lastname <username.lastname@CONTOSO.COM>  
To: "username@yahoo.com" <username@yahoo.com>  
Subject: Test  
Thread-Topic: Test  
Thread-Index: AdhIPjTs2kdQe1SXRVSdjDoKvS/2og==  
Date: Mon, 4 Apr 2022 16:08:11 +0000  
Message-ID: <QB1PR01MB28975C398B1E087AD00E5D27DCE59@QB1PR01MB2897.CANPRD01.PROD.OUTLOOK.COM>  
Accept-Language: en-US  
Content-Language: en-US  
X-MS-Has-Attach: yes  
X-MS-TNEF-Correlator:  
authentication-results: dkim=none (message not signed)  
 header.d=none;dmarc=none action=none header.from=CONTOSO.COM;  
x-ms-publictraffictype: Email  
x-ms-office365-filtering-correlation-id: 3108ff54-05f7-45b7-b017-08da1655515f  
x-ms-traffictypediagnostic: YQBPR0101MB5541:EE_  
x-microsoft-antispam-prvs: <YQBPR0101MB5541F6DAC6B2DE5ABBCAE03FDCE59@YQBPR0101MB5541.CANPRD01.PROD.OUTLOOK.COM>  
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:QB1PR01MB2897.CANPRD01.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230001)(4636009)(366004)(396003)(346002)(39830400003)(376002)(136003)(33656002)(40140700001)(55016003)(86362001)(5660300002)(2906002)(7116003)(8676002)(52536014)(508600001)(64756008)(66446008)(66476007)(66556008)(66946007)(76116006)(38070700005)(8936002)(6916009)(316002)(558084003)(7696005)(3480700007)(26005)(186003)(99936003)(71200400001)(38100700002)(166002)(122000001)(9686003)(6506007);DIR:OUT;SFP:1102;  
x-ms-exchange-antispam-messagedata-chunkcount: 1  
x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?jPtZaU0LtTAGYFNzu4FRyniwSelxhql+9v+KxFZwFVI1WtkQUKxicLlMUTcJ?=  
 =?us-ascii?Q?4dGOmRCseEd3TGAz3Sv7nAO9qzRm8Gewb7F2jL6E22G4ndYca4RhIdtVHkXx?=  
 =?us-ascii?Q?lIZaGlEjRgdwALL+MTko8F8CSjUddteEn8NZZxPXwY5uM/tzu+owsiv80Yc+?=  
 =?us-ascii?Q?7UyieJw9r+ptde8G8CMYTbZ05WBtF4sWrybjcQ9yKng7BsI1+Uk+uKjc5XaH?=  
 =?us-ascii?Q?50/JQD40baHIn+4LvfYQAFzKbpL8YtoEe7frWthrrXh/+14wfHUw4Ex381Kf?=  
 =?us-ascii?Q?JSobtEnYgXaALnGqkwq6y6Ayo2iCpMR/xcCGbbs0MXCSBb/QUMYYs9X/eOyV?=  
 =?us-ascii?Q?c7jUOOjs/kudyZnHM9EYZQyeUekmXkaks5NXoCBajknsKhU1k8qJD6WgbjlI?=  
 =?us-ascii?Q?MH7zy+STjOCTEqBXJR1R23pOe8NDbHhKMpPVS6Rtpg69OO9l7F7nuLQ/ztFk?=  
 =?us-ascii?Q?vIqO640y4zIUR7Hhf1irdHnT4eidLZtk8R1epkaNq386BCS+JY7QQCE7QdrC?=  
 =?us-ascii?Q?EfPRZqj/e3t+8bvFSxSQkOGb+ZAVwtrSBiKaH9nBiQ/gTnq4gn1ewO2dT4u6?=  
 =?us-ascii?Q?Sb5LnatSjc9WJIsJ8SnwIW4Ris5sXSM4uiPlPOnlYPaonqJNPAidpVUdruTC?=  
 =?us-ascii?Q?vMvbMbwIONa/h2g0gYz39J6uzQ6+mFpVeKo3s8tHODuFiSFrIHaihYGJJoko?=  
 =?us-ascii?Q?MGQZz3tL7YAT70K8C4f7EkMdI3axcDwFvKRIqtOnv/XKcf8gak+B9YNAhSSc?=  
 =?us-ascii?Q?Rg0Oaj/Ot0tiTGYa9j3D5v1BP6gumxavg5oAzja/jdePjLClj0q07ERYV0Ps?=  
 =?us-ascii?Q?PHjRaSzINuH0mGifd6ks7uanSYWeqTCJxinZeCvEsPiXvVcTtj6WO19Yew0m?=  
 =?us-ascii?Q?FY2HsqsAYnnDB6xAFn2rClZInH8TSuXI0hLoXyYqMv07p5KDFQJXdnw9uO0e?=  
 =?us-ascii?Q?IVBzBrX2GynNcB3Dm3ACgyY9MJM+ylHsfiw7mKJo261Or4JAAyAza9NNq5nF?=  
 =?us-ascii?Q?3oCDMkVStnZj6F31qOBL++A95uZAv4eBHdcDZZRDzXSBmeVMmJtkzzhwYeAb?=  
 =?us-ascii?Q?ZcacPGZBONSIlM/AscK2RCu7Nb1UjGwr3sp+6EUqaEsgllwusmEoM1hYPhmq?=  
 =?us-ascii?Q?ludjkENbaKoUSAMbb/u+AaZz/Q1TsMsFaW2cUeefz4KOT4skYJmcebCexEYv?=  
 =?us-ascii?Q?NQb09SNSPNEv+tmwzglXsJGib6hMUcOppUkCrgTqgur0Dr8C45BlWdtzwLLS?=  
 =?us-ascii?Q?ExT1l4kfvjDvLHwFn3zxjSpa84Fx/6UZfjVvrCN8ZG0zh4HsErgsPxbBW0Gd?=  
 =?us-ascii?Q?0CBrO3saaCsY9mMKJbb6YuPwXAOrbNYLOCepn13iQ0GJ85lAl+wT6ovMYfC8?=  
 =?us-ascii?Q?WFq8qlnEaeXjWecTXJl5pZ8HpoaoNz/TRWR3gW9F+9PawjfNnT8l+PQzW9jE?=  
 =?us-ascii?Q?EhqdI9/IJPyY5W+TZ8yZf3XyYfDsLAo8V3FQJ2bcNYKwtCBfJtQyztQnGlHd?=  
 =?us-ascii?Q?13mUANJe6Y7q+fafWhcu0juAeZfznXu/q7D1x5VW4R4vuZbqWx23eYZlAsNO?=  
 =?us-ascii?Q?Rp5EnPQfY+TO2S7tDyBOV6sAUCudnd4gtbxaj+a8d0SqYMfCq0sIvxbm3o3I?=  
 =?us-ascii?Q?wAqeBJpQzMSsuLwCOSurDb7t2iSVlBLL2w0quti16fRnafDZfw52HHS/v4DD?=  
 =?us-ascii?Q?ssuDWRRlAkHwEFONrVOQ2lSWwbwfWBjmR0QBh9xgaX51ptCLOB/zwwLnqN87?=  
 =?us-ascii?Q?MW5KjD+92Wm04qAucUrkUM4g4FR7Rdg=3D?=  
Content-Type: multipart/related;  
 boundary="_004_QB1PR01MB28975C398B1E087AD00E5D27DCE59QB1PR01MB2897CANP_";  
 type="multipart/alternative"  
MIME-Version: 1.0  
X-OriginatorOrg: CONTOSO.COM  
X-MS-Exchange-CrossTenant-AuthAs: Internal  
X-MS-Exchange-CrossTenant-AuthSource: QB1PR01MB2897.CANPRD01.PROD.OUTLOOK.COM  
X-MS-Exchange-CrossTenant-Network-Message-Id: 3108ff54-05f7-45b7-b017-08da1655515f  
X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Apr 2022 16:08:11.8822  
 (UTC)  
X-MS-Exchange-CrossTenant-fromentityheader: Hosted  
X-MS-Exchange-CrossTenant-id: bcefeba4-5608-4f06-bec6-4aff5a9ab958  
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED  
X-MS-Exchange-CrossTenant-userprincipalname: QqtqMrutZzIWeOepMIliMx8Nwmlj3ehnAmVFnaDDpfQOcFzH1Rv/8k7qdg0MCbubcRp64jnmUzx+yWAnNspWmL4i1MvlhAtlsqtfItgPlWU=  
X-MS-Exchange-Transport-CrossTenantHeadersStamped: YQBPR0101MB5541  

  

Answer 1

This started after you setup DMARC?

Same issue if you set the p=quarantine instead of "None"?
I wonder if Yahoo is being picky because None essentially means DMARC is not enabled.