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550 5.1.1 RESOLVER.ADR.RecipNotFound; not found - Exchange 2010 - Postfix

Posted on 2013-05-17
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Last Modified: 2013-05-29
Hello,

I have a LAN that has an Exchange 2010 server and a Linux Postfix server

Trying to send a message from an account that is on the Exchange server to an account
 that is on the Linux server I get the following error:

Diagnostic information for administrators:

Generating server: Server1.Domain.local

user@def.com
#550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##

Original message headers:

Received: from Server0.Domain.local ([192.168.217.10]) by
 Server1.Domain.local ([192.168.217.11]) with mapi id 14.02.0342.003;
 Fri, 17 May 2013 23:43:23 -0400
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: "User" <user@abc.com>
To: "user@def.com" <user@def.com>
Subject: TEST @ 2343
Thread-Topic: TEST @ 2343
Thread-Index: Ac5TedhzMEpuDnfBSIeFpuE8fSaBEQ==
Date: Fri, 17 May 2013 23:43:22 -0400
Message-ID: <E3336DF928658B45AD4B60C756612AD53C3538@GEMWIN0000>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator: <E3336DF928658B45AD4B60C756612AD53C3538@GEMWIN0000>
MIME-Version: 1.0
X-Originating-IP: [x.x.x.x]

I am able to successfully send messages to other accounts that are on the Exchange server.
I am able to send mail to the Linux accounts from outside the LAN no problem.

Any ideas?

Thank you for your time,

Don
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Question by:GEMCC
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Expert Comment

by:arnold
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You need to look at the full message headers of the bounce message to be certain where it is coming from and then it will make things clearer.

You included the message you were sending versus the headers of the NDR.
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Expert Comment

by:Simon Butler (Sembee)
Comment Utility
Are the two servers using the same address space?
If so then you will need to reconfigure Exchange to share the SMTP address space.

http://technet.microsoft.com/en-us/library/bb676395(v=exchg.141).aspx

Exchange presumes by default that it is responsible for all email on the domain.

Simon.
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Author Closing Comment

by:GEMCC
Comment Utility
It's fixed!
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