troubleshooting Question

Exchange Internal Emails Bounce Back

Avatar of purpleoak
purpleoakFlag for United Kingdom of Great Britain and Northern Ireland asked on
Microsoft Server OSExchangeWindows Server 2012
4 Comments1 Solution1594 ViewsLast Modified:
I am having a strange problem. I have exchange 2013 with Domained joined clients and non domain clients. All running outlook 2007, 2010 or 2013

when I send an email from a joined domain client I can send internally and externally no problems.

however when I send from a non domain client I can send externally but not to internal clients. When I do I get the following error

Diagnostic information for administrators:

Generating server: 5RGS003.5rings.local

 Remote Server returned '550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found'

Original message headers:
Received: from 5RGS003.5rings.local ( by 5RGS003.5rings.local
 ( with Microsoft SMTP Server (TLS) id 15.0.620.29; Wed, 3 Jul
 2013 09:47:55 +0100
Received: from 5RGS003.5rings.local ([]) by 5RGS003.5rings.local
 ([::1]) with mapi id 15.00.0620.020; Wed, 3 Jul 2013 09:47:54 +0100
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: Maxine Laker <>
To: Ashley Hay-Ellis - 5 Rings IT
Subject: teste
Thread-Topic: teste
Thread-Index: Ac53ygAOl1o1RA6BQGiTdtLe4wltkQ==
Date: Wed, 3 Jul 2013 09:47:53 +0100
Message-ID: <24cbf6b76dda451bafa70b7d2767881f@5RGS003.5rings.local>
Accept-Language: en-GB, en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator: <24cbf6b76dda451bafa70b7d2767881f@5RGS003.5rings.local>
MIME-Version: 1.0
X-Originating-IP: []

This is very strange and cant see an obvious reason for the problem.

Other points that might be needed, I have a signed and authorised SSL certificate not an self signed one. The problem occurs on XP, Server 2003 and windows 7 and 8 machines.

Kind Regards

Kind Regards
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