Need help in figuring out if there is anything wrong with the DNS settings for mail delivery

Having issues with email delivery into outlook.com and hotmail. emails are going into junk mail.

Email flow is "Application > Exchange 2016 > Firewall > Office 365 > Mimecast"

MX records points to Mimecast and goes from there to Office 365.

We do not have our own SPF record, DKIM or DMARC set up for upp-ltd.com and I am not sure if Msft has anything set up for uppgroup.onmicrosoft.com.

besides for SPF, DKIM and DMARC does everything looks ok on the email headers below??

Received: from BY2NAM01HT037.eop-nam01.prod.protection.outlook.com
 (2603:10a6:600:8a::34) by LNXP123MB2217.GBRP123.PROD.OUTLOOK.COM with HTTPS
 via LO2P265CA0262.GBRP265.PROD.OUTLOOK.COM; Wed, 14 Aug 2019 14:11:45 +0000
ARC-Seal: i=2; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=fail;
 b=iGqdpGh8dZ1PolKaSc7GLSNQplFD5cfaiXeJje42bc4KrStG0/xG4UxKF2vzKFB5G33wbHWrQvrLRTxS59mIB0GLIya9mup5e3K53TtqhFAc3fVp9rKJ78bW9D3ij73OwNLumFQwDVQ5+FoHfZ+KMS+4D/QD61cpeOdytVznk5+btciClTDIFoldl0Ts8/un1A/VRP7TA4E96gU5/gwRFEpSgUl/y2xe6yOacbLrTfJ/TljPQUDtiPC8VKgU7TGCqjjtsXQlyT25vp9XysFMN9iuJk0PT74Dsoj1ntBgdLQcgk4HkQQv3h3c847z+u6VR1rKy57hgUoBHZgYmFQvZg==
ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;
 s=arcselector9901;
 h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
 bh=hjdRKAv3JPPxdyjOqp/ls+4OhOfFLeNhY2vYne4sP6U=;
 b=NSkzWEcG5PnPFqnZJKgxeyN18naWRr8wVJxPtB3pf+0gNh8BIgXUgOscvufeD3Nq45SDmMr4phoX8uTYWTTEDsCHIeGBBkJG8E7Ay6Vf+nuaWyQ79stAlD3HTshiWjpHDNscd5TKAUbltGvKqST1bSajua2PQ8B/oyaA3hGZzwCC7+GUH3hpjUz+fwjRZ5N+DOW6jk3AXUcno12lRSMwi9unlFamIJ65hEjZXH0xsy9CtOcoyHzEU6dAwyGGGSeHhQKB5bE27xl4nHkYrr0LLL07SPju+mNctjwpaRIyUlf4mz7IODggloBX7zk4NStPaHuP3EQsii/Kwg0trFrH4g==
ARC-Authentication-Results: i=2; mx.microsoft.com 1; spf=pass (sender ip is
 146.101.78.161) smtp.rcpttodomain=outlook.com smtp.mailfrom=upp-ltd.com;
 dmarc=bestguesspass action=none header.from=upp-ltd.com; dkim=fail (signature
 did not verify) header.d=uppgroup.onmicrosoft.com; arc=fail (48)
Received: from BY2NAM01FT047.eop-nam01.prod.protection.outlook.com
 (10.152.68.54) by BY2NAM01HT037.eop-nam01.prod.protection.outlook.com
 (10.152.69.61) with Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.2157.15; Wed, 14 Aug
 2019 14:11:44 +0000
Authentication-Results: spf=pass (sender IP is 146.101.78.161)
 smtp.mailfrom=upp-ltd.com; outlook.com; dkim=fail (signature did not verify)
 header.d=uppgroup.onmicrosoft.com;outlook.com; dmarc=bestguesspass
 action=none header.from=upp-ltd.com;
Received-SPF: Pass (protection.outlook.com: domain of upp-ltd.com designates
 146.101.78.161 as permitted sender) receiver=protection.outlook.com;
 client-ip=146.101.78.161; helo=eu-smtp-delivery-161.mimecast.com;
Received: from eu-smtp-delivery-161.mimecast.com (146.101.78.161) by
 BY2NAM01FT047.mail.protection.outlook.com (10.152.68.243) with Microsoft SMTP
 Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id
 15.20.2178.16 via Frontend Transport; Wed, 14 Aug 2019 14:11:43 +0000
X-IncomingTopHeaderMarker:
 OriginalChecksum:ED2B93F1534F4D404DE43B0CE17F126879A62BAE875517B8EBFF2FDBB80BE594;UpperCasedChecksum:027F228F42324C7D6FC2C3D5A2A5A5C3E2D968B77459DFC8E3285B786E3F001E;SizeAsReceived:5993;Count:39
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none;
 b=mOc6qu7csDpxsV0YJ98ohhcx24XWg7PxVUPf/dDkNjE31p5SPUMOLM1hkg9jX48zBy/JnLgGF8/R1QhF+6296ApDePTVkgDaSCnRK34IELjDLIcbfzlzuzk4qS/qXsObjNzCYkuiw2ghY/mFF/UnkTPdV5cejBHAsFlHohJKUWOEt/uC+0r9eBuzqg69Z9vWr7Y2U2WgBzQK7qHWbDGdqghHqkg9NP8i6gpryAXUqH0vFEsZ1zRUB5KhBdITbjGWSuhBrJcTtCfdQt7SeES13r3lS1U0nuboY8Q17thme1PQ2kqqC9CgreKfDWDHoCn6ySDbUW9BRr3IKlUrpAiVmQ==
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-SenderADCheck;
 bh=hjdRKAv3JPPxdyjOqp/ls+4OhOfFLeNhY2vYne4sP6U=;
 b=KIaHZKQ+gOT89QlIxDCKLs9f2XdA99smKbPu07bsNyj4t20rkG8BVOAUOgulHkgLevIG90+b7xniMtIpbirl0QdBkr9iyCVOrsSBMUp6Rs+VbQetGy5awVqoNctgrPUeWuxIyBu0KLqmk9z1GqZz8aO8JKl0Nux1KR2gLPzvcbTIYYPD7favjaZXBkXEEcWrxhZVFke46dsgRgcSkzQ88z+d4OWe7PotYdyZHc5pYsKHy2G36Jq/QT/NguxJumlx0rBMATIljL1x4umdSLHKHBllG6huo8CraZbB5QTFHGZ2CDnfmvuyFR5GpPb66gyu+eKl9VrgtD0mreAnHCtMPw==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is
 5.148.79.5) smtp.rcpttodomain=outlook.com smtp.mailfrom=upp-ltd.com;
 dmarc=bestguesspass action=none header.from=upp-ltd.com; dkim=none (message
 not signed); arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=uppgroup.onmicrosoft.com; s=selector2-uppgroup-onmicrosoft-com;
 h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
 bh=hjdRKAv3JPPxdyjOqp/ls+4OhOfFLeNhY2vYne4sP6U=;
 b=UxuaZ27XmxXEM2vHiEP9PBCuzmPjQlThNDzFKQkp4A7U+4V8g0nP0Ka4Z/FSa12K+fo6thELvkzNZlr6/gEK+Gnd9qBYVN+X6lilUIH/5dzKZ/OXkT/UPSzpSU+GIf0AQ6oqUWVAioIw7qGuWLXu93jHVTUdXjDe+6cw8h0NiKA=
Received: from EUR04-DB3-obe.outbound.protection.outlook.com
 (mail-db3eur04lp2050.outbound.protection.outlook.com [104.47.12.50]) (Using
 TLS) by relay.mimecast.com with ESMTP id
 uk-mta-71-CV2Xd2PUM32uxn-g3cNB5A-1; Wed, 14 Aug 2019 15:11:40 +0100
Received: from HE1PR0902CA0033.eurprd09.prod.outlook.com (2603:10a6:7:15::22)
 by VI1PR09MB4256.eurprd09.prod.outlook.com (2603:10a6:803:13a::12) with
 Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2157.14; Wed, 14 Aug
 2019 14:11:39 +0000
Received: from AM5EUR03FT053.eop-EUR03.prod.protection.outlook.com
 (2a01:111:f400:7e08::205) by HE1PR0902CA0033.outlook.office365.com
 (2603:10a6:7:15::22) with Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2157.18 via Frontend
 Transport; Wed, 14 Aug 2019 14:11:38 +0000
Received: from mail.upp-ltd.com (5.148.79.5) by
 AM5EUR03FT053.mail.protection.outlook.com (10.152.16.210) with Microsoft SMTP
 Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id
 15.20.2115.18 via Frontend Transport; Wed, 14 Aug 2019 14:11:38 +0000
Received: from UPPSRVEX4.upp-ltd.local (10.90.2.59) by UPPSRVEX4.upp-ltd.local
 (10.90.2.59) with Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.1531.3; Wed, 14 Aug
 2019 15:11:32 +0100
Received: from UPPSRVADMIN (10.90.2.65) by UPPSRVEX4.upp-ltd.local
 (10.90.2.59) with Microsoft SMTP Server id 15.1.1531.3 via Frontend
 Transport; Wed, 14 Aug 2019 15:11:32 +0100
From: Joe Blogs <Joe.Blogs@upp-ltd.com>
To: Jane Doe <janedoe@outlook.com>
Date: Wed, 14 Aug 2019 15:11:32 +0100
Subject: This is a sample mail
Message-ID: <e9d02a65-89fe-488f-a752-3e13e5eebce2@UPPSRVEX4.upp-ltd.local>
Return-Path: Joe.Blogs@upp-ltd.com
X-EOPAttributedMessage: 1
X-Forefront-Antispam-Report-Untrusted:
 CIP:5.148.79.5;IPV:NLI;CTRY:GB;EFV:NLI;SFV:NSPM;SFS:(10019020)(346002)(136003)(376002)(39850400004)(396003)(2980300002)(199004)(40134004)(189003)(31696002)(5660300002)(70206006)(66574012)(14444005)(9686003)(5024004)(106002)(70586007)(8676002)(47776003)(126002)(23726003)(486006)(2906002)(44832011)(476003)(31686004)(478600001)(46406003)(7596002)(86362001)(305945005)(26005)(246002)(316002)(336012)(8746002)(6916009)(356004)(8936002)(7636002)(186003)(50466002)(97756001)(212503006);DIR:OUT;SFP:1102;SCL:1;SRVR:VI1PR09MB4256;H:mail.upp-ltd.com;FPR:;SPF:Pass;LANG:en;PTR:mail.upp-ltd.com;A:1;MX:1;
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-Correlation-Id: 820361c8-f467-4627-a082-08d720c155d9
X-Microsoft-Antispam-Untrusted:
 BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600148)(711020)(4605104)(4709080)(1401327)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328);SRVR:VI1PR09MB4256;
X-MS-TrafficTypeDiagnostic: VI1PR09MB4256:|BY2NAM01HT037:
X-Microsoft-Antispam-PRVS:
 <VI1PR09MB42564EA5364694A3882F9341CDAD0@VI1PR09MB4256.eurprd09.prod.outlook.com>
X-MS-Oob-TLC-OOBClassifiers: OLM:10000;
X-Forefront-PRVS: 01294F875B
X-MS-Exchange-SenderADCheck: 1
X-Microsoft-Antispam-Message-Info-Original:
 zu5x4sRB0arC3TIrYjETVmA1xX1pScVvvUohKO5MsvTYhyjx5U6QFkUwvEZXdR31CtmKPh6UWQhuqpKmpt/79a8Ignuo1fBJGuU18AOlzG7NSgD+kPhDWHZTxegdwnmAxbWiEMq1Q+4ASkp6vWoGV4Eok1WeQ0iVC1imzHv7NZSs95GoWuY2K+Plh23EtQ+gRME0tYbDggYNFFnZmPAIJKRR8O0nwRZg5Q/3KGjh6pnx4CepC8iLzyanKxnLr444h6AqmbgyvinfHYQZ71bn2EDxesRiic/sdPVCRYQcG4RphbOm0C0ZYMuXCU9z82r9Ob8yHgExurV5vaf8UmZOqi7QgPCIYyj4Lobm4N0cBYQW3gTI4zcnPNKOguGsbaaOsOVwJ8RW+eqp87LwwY6UJ4tVnX9M7CMge1QCWBAPR4o=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR09MB4256
X-MC-Unique: CV2Xd2PUM32uxn-g3cNB5A-1
X-Mimecast-Spam-Score: 0
Content-Type: text/plain; charset=WINDOWS-1252
Content-Transfer-Encoding: quoted-printable
X-IncomingHeaderCount: 39
X-MS-Exchange-Organization-ExpirationStartTime: 14 Aug 2019 14:11:43.7317
 (UTC)
X-MS-Exchange-Organization-ExpirationStartTimeReason: OriginalSubmit
X-MS-Exchange-Organization-ExpirationInterval: 1:00:00:00.0000000
X-MS-Exchange-Organization-ExpirationIntervalReason: OriginalSubmit
X-MS-Exchange-Organization-Network-Message-Id:
 820361c8-f467-4627-a082-08d720c155d9
X-EOPTenantAttributedMessage: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa:0
X-MS-Exchange-Organization-MessageDirectionality: Incoming
X-MS-Exchange-Transport-CrossTenantHeadersStripped:
 BY2NAM01FT047.eop-nam01.prod.protection.outlook.com
X-Forefront-Antispam-Report: EFV:NLI;
X-MS-Exchange-Organization-AuthSource:
 BY2NAM01FT047.eop-nam01.prod.protection.outlook.com
X-MS-Exchange-Organization-AuthAs: Anonymous
X-MS-UserLastLogonTime: 8/14/2019 2:11:36 PM
X-MS-Office365-Filtering-Correlation-Id-Prvs:
 17915081-b157-41f0-b5d7-08d720c152f1
X-Microsoft-Antispam:
 BCL:0;PCL:0;RULEID:(2390118)(5000188)(710020)(711020)(4605104)(610169)(650170)(1124261)(8291501072);SRVR:BY2NAM01HT037;
X-MS-Exchange-EOPDirect: true
X-Sender-IP: 146.101.78.161
X-SID-PRA: JOE.BLOGS@UPP-LTD.COM
X-SID-Result: PASS
X-MS-Exchange-Organization-PCL: 2
X-MS-Exchange-AtpMessageProperties: SA|SL
X-MS-Exchange-ATPSafeLinks-Stat: 0
X-OriginatorOrg: outlook.com
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Aug 2019 14:11:43.2513
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 820361c8-f467-4627-a082-08d720c155d9
X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa
X-MS-Exchange-CrossTenant-FromEntityHeader: Internet
X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg:
 00000000-0000-0000-0000-000000000000
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2NAM01HT037
X-MS-Exchange-Transport-EndToEndLatency: 00:00:01.9405696
X-MS-Exchange-Processed-By-BccFoldering: 15.20.2157.000
X-Microsoft-Antispam-Mailbox-Delivery:
    abwl:0;wl:0;pcwl:0;kl:0;iwl:0;ijl:0;dwl:0;dkl:0;rwl:0;ucf:0;jmr:0;ex:1;auth:1;dest:J;OFR:ExclusiveSettings;ENG:(5062000261)(5061607266)(5061608174)(4900115)(4920090)(6515079)(4950130)(4990090)(9190016);RF:JunkEmail;
X-Message-Info:
    qoGN4b5S4yrfUGew4atb642biW7lq1euRV2F1Jm2Nf1IMtpXXZRh/uqF0jI6rdHDGGErJKU6AhymbPO1WiG5DBzj6+RoCsLnA1cgjMGdVGjFT2jiqMA2/BXhzlzUysgBjqHGl3zyZRb6MGJToFClDREzFMFdB2c5TtSGh9vuT1l5OPCjSwDyJ26j1o9xReO8ErUY6v//W7odgr4hklq72g==
X-Message-Delivery: Vj0xLjE7dXM9MDtsPTE7YT0xO0Q9MjtHRD0xO1NDTD02
X-Microsoft-Antispam-Message-Info:
    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
MIME-Version: 1.0