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NDR - What is causing this error

I have received the following NDR when replying to an email. It is the first time I have communicated with this person via email.

I am using Office 365.

Can someone explain how I might resolve this issue?

************************************************************************
Delivery has failed to these recipients or groups:
Nigel Davis
Your message was rejected by the recipient email server. Please check the recipient's email address and try resending your message, or contact the recipient directly. For more tips to help resolve this issue, see DSN code 5.1.0 in Exchange Online - Office 365. If the problem continues, contact your email admin.





Diagnostic information for administrators:
Generating server: DBXPR03MB144.eurprd03.prod.outlook.com
them@theirdomain.com
Remote Server returned '< #5.1.10 smtp;550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup>'
Original message headers:
Received: from DB3PR03CA0045.eurprd03.prod.outlook.com (10.255.183.45) by
 DBXPR03MB144.eurprd03.prod.outlook.com (10.242.141.23) with Microsoft SMTP
 Server (TLS) id 15.1.75.20; Sun, 1 Feb 2015 10:49:58 +0000
Received: from AM1FFO11FD030.protection.gbl (2a01:111:f400:7e00::185) by
 DB3PR03CA0045.outlook.office365.com (2a01:111:e400:9438::45) with Microsoft
 SMTP Server (TLS) id 15.1.75.20 via Frontend Transport; Sun, 1 Feb 2015
 10:49:58 +0000
Received: from emea01-am1-obe.outbound.protection.outlook.com (157.56.112.144)
 by AM1FFO11FD030.mail.protection.outlook.com (10.174.64.219) with Microsoft
 SMTP Server (TLS) id 15.1.75.11 via Frontend Transport; Sun, 1 Feb 2015
 10:49:58 +0000
Received: from AMSPR04MB423.eurprd04.prod.outlook.com (10.242.107.150) by
 AMSPR04MB422.eurprd04.prod.outlook.com (10.242.107.149) with Microsoft SMTP
 Server (TLS) id 15.1.65.19; Sun, 1 Feb 2015 10:49:57 +0000
Received: from AMSPR04MB423.eurprd04.prod.outlook.com ([10.242.107.150]) by
 AMSPR04MB423.eurprd04.prod.outlook.com ([10.242.107.150]) with mapi id
 15.01.0065.013; Sun, 1 Feb 2015 10:49:57 +0000
From: ed smith <me@mydomain.co.uk>
To: Nigel Davis <them@theirdomain.com>
Subject: RE: 121/Exhibitions
Thread-Topic: 121/Exhibitions
Thread-Index: AdA6PTJ8ZyvOp40+Tkud/295qdU2zADzrX+A
Date: Sun, 1 Feb 2015 10:49:56 +0000
Message-ID: <AMSPR04MB42366AB74EC83FB06957901993F0@AMSPR04MB423.eurprd04.prod.outlook.com>
References: <64ED5D0305730E4D889B7C43766769EB028F9CD23A33@N3-SRV-01.n3displaygraphi.local>
In-Reply-To: <64ED5D0305730E4D889B7C43766769EB028F9CD23A33@N3-SRV-01.n3displaygraphi.local>
Accept-Language: en-GB, en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [86.174.132.242]
authentication-results: theirdomain.com; dkim=none (message not signed)
 header.d=none;theirdomain.com; dkim=none (message not signed)
 header.d=none;theirdomain.com; dmarc=permerror action=none
 header.from=mydomain.co.uk;
x-microsoft-antispam: BCL:0;PCL:0;RULEID:;SRVR:AMSPR04MB422;UriScan:;
x-exchange-antispam-report-test: UriScan:;
x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:;SRVR:AMSPR04MB422;
x-forefront-prvs: 04740D25F1
X-Forefront-Antispam-Report-Untrusted: SFV:NSPM;SFS:(10019020)(209900001)(51914003)(40134004)(99936001)(19617315012)(16799955002)(40100003)(54356999)(54606007)(54206007)(2656002)(15188155005)(19618635001)(77156002)(450100001)(33656002)(19627595001)(92566002)(19625215002)(86362001)(122556002)(62966003)(87936001)(19580395003)(50986999)(76176999)(19300405004)(110136001)(107886001)(74482002)(46102003)(66066001)(17760045003)(2950100001)(2900100001)(15975445007)(74316001)(77096005)(102836002)(86152002)(19580405001)(16236675004)(76576001)(15395725005)(18206015028)(15398625002)(15669805003);DIR:OUT;SFP:1102;SCL:1;SRVR:AMSPR04MB422;H:AMSPR04MB423.eurprd04.prod.outlook.com;FPR:;SPF:None;MLV:sfv;LANG:en;
Content-Type: multipart/related;
      boundary="_017_AMSPR04MB42366AB74EC83FB06957901993F0AMSPR04MB423eurprd_";
      type="multipart/alternative"
MIME-Version: 1.0
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AMSPR04MB422
Return-Path: me@mydomain.co.uk
X-EOPAttributedMessage: 0
Received-SPF: Pass (protection.outlook.com: domain of mydomain.co.uk
 designates 157.56.112.144 as permitted sender)
 receiver=protection.outlook.com; client-ip=157.56.112.144;
 helo=emea01-am1-obe.outbound.protection.outlook.com;
Authentication-Results: spf=pass (sender IP is 157.56.112.144)
 smtp.mailfrom=me@mydomain.co.uk;
X-Forefront-Antispam-Report: CIP:157.56.112.144;CTRY:US;IPV:NLI;IPV:NLI;EFV:NLI;
X-MS-Exchange-Transport-CrossTenantHeadersStripped: AM1FFO11FD030.protection.gbl
X-MS-Exchange-Transport-CrossTenantHeadersPromoted: AM1FFO11FD030.protection.gbl
X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:DBXPR03MB144;
0
roy_batty
Asked:
roy_batty
3 Solutions
 
Dave BaldwinFixer of ProblemsCommented:
This...
'< #5.1.10 smtp;550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup>'
is your actual bounce message and it says that the recipient can't be found.  If you have sent them an email before, it could be a network problem or their email address is no longer valid.  Unless you typed the email address wrong, it's not your problem.
0
 
Satya PathakLead Technical ConsultantCommented:
I would suggest you to try to send an emails through a OWA or outlook in online mobe and check it agian.
0
 
VB ITSSpecialist ConsultantCommented:
Agreed, the error message is pretty straight forward: says the email address at the other end doesn't exist.

Have you tried perhaps sending an email tto this address from an account with a free provider such as Gmail, Hotmail, Yahoo, etc to see if you get the same bounceback error message/
0
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dsnegi_25decCommented:
Your NDR clearly shows that their is no receipt by  that name . Below are the multiple reason for this NDR Could be


Diagnostic information for administrators:
Generating server: DBXPR03MB144.eurprd03.prod.outlook.com
them@theirdomain.com
Remote Server returned '< #5.1.10 smtp;550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup>'

 Your emails has been returned because the intented recipient's email account has been suspended. The account must be re-activated to receive incoming messages
 User account disabled for being inactive
 Policy rejection on the target address
These messages mean that the recipient’s email provider has blocked their account and any incoming mail. You should report the problem to the recipient, who in turn will need to speak to their mail administrator to arrange for the account to be unblocked
0
 
roy_battyAuthor Commented:
I tried to re-send the email later that day and it was confirmed as received.

Thanks for the advice here though.
0
 
roy_battyAuthor Commented:
Issue seemed to resolve itself but the advice provided was still useful
0

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