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Outlook - 550 5.7.520 Message blocked - can't send any emails - please help RRS feed

  • Question

  • Diagnostic information for administrators:<o:p></o:p>

    Generating server: DB3EUR04HT089.mail.protection.outlook.com<o:p></o:p>

    Remote Server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4567)'<o:p></o:p>

    Original message headers:<o:p></o:p>

    Received: from DB3EUR04FT025.eop-eur04.prod.protection.outlook.com<o:p></o:p>
     (10.152.24.60) by DB3EUR04HT089.eop-eur04.prod.protection.outlook.com<o:p></o:p>
     (10.152.24.126) with Microsoft SMTP Server (version=TLS1_2,<o:p></o:p>
     cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2707.21; Wed, 5 Feb<o:p></o:p>
     2020 12:13:02 +0000<o:p></o:p>
    Received: from VI1PR10MB2637.EURPRD10.PROD.OUTLOOK.COM (10.152.24.59) by<o:p></o:p>
     DB3EUR04FT025.mail.protection.outlook.com (10.152.24.144) with Microsoft SMTP<o:p></o:p>
     Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id<o:p></o:p>
     15.20.2707.21 via Frontend Transport; Wed, 5 Feb 2020 12:13:02 +0000<o:p></o:p>
    X-IncomingTopHeaderMarker: OriginalChecksum:4659D88187732D46B8F135B73A83BAEE1D1FDEA5E346B7D2971CDE36AB3F5F90;UpperCasedChecksum:59273C3B508987868B459ECDA11DEC005E2AF4AABCC048D69DE0A3CDDB08E510;SizeAsReceived:6649;Count:43<o:p></o:p>
    Received: from VI1PR10MB2637.EURPRD10.PROD.OUTLOOK.COM<o:p></o:p>
     ([fe80::c8c2:2d7b:31e6:cd40]) by VI1PR10MB2637.EURPRD10.PROD.OUTLOOK.COM<o:p></o:p>
     ([fe80::c8c2:2d7b:31e6:cd40%2]) with mapi id 15.20.2707.020; Wed, 5 Feb 2020<o:p></o:p>
     12:13:02 +0000<o:p></o:p>
    Content-Type: application/ms-tnef; name="winmail.dat"<o:p></o:p>
    Content-Transfer-Encoding: binary<o:p></o:p>
    Subject: test
    Thread-Topic: test<o:p></o:p>
    Thread-Index: AQHV3B2SbGMihHgd00+9CIAAiuzmLw==<o:p></o:p>
    X-MS-Exchange-MessageSentRepresentingType: 1<o:p></o:p>
    Date: Wed, 5 Feb 2020 12:13:01 +0000<o:p></o:p>
    Message-ID: <VI1PR10MB26371488DEA302D648E15A3FF1020@VI1PR10MB2637.EURPRD10.PROD.OUTLOOK.COM><o:p></o:p>
    Accept-Language: en-GB, en-US<o:p></o:p>
    Content-Language: en-GB<o:p></o:p>
    X-MS-Has-Attach:<o:p></o:p>
    X-MS-TNEF-Correlator: <VI1PR10MB26371488DEA302D648E15A3FF1020@VI1PR10MB2637.EURPRD10.PROD.OUTLOOK.COM><o:p></o:p>
    MIME-Version: 1.0<o:p></o:p>
    X-TMN: [p8cFWygHsNdUp0mCok+1R/Wl1m/ryAPy]<o:p></o:p>
    X-MS-PublicTrafficType: Email<o:p></o:p>
    X-IncomingHeaderCount: 43<o:p></o:p>
    X-EOPAttributedMessage: 0
    X-MS-Office365-Filtering-Correlation-Id: c51f49c5-80d2-48eb-fede-08d7aa34bf46<o:p></o:p>
    X-MS-TrafficTypeDiagnostic: DB3EUR04HT089:<o:p></o:p>
    Wednesday, February 5, 2020 12:18 PM

Answers