troubleshooting Question

#550 4.4.7 QUEUE.Expired; message expired ##

Avatar of nutekconsultants
nutekconsultants asked on
ExchangeEmail ServersWindows Server 2008
12 Comments1 Solution2879 ViewsLast Modified:
Hi, we have an Exchange 2010 Server that is sending/receiving internal and external emails just fine
Except to 1 external domain.
we get bouncebacks...
*****************
Delivery has failed to these recipients or groups:

Jim Bob (jim.bob@external.com)
The server has tried to deliver this message, without success, and has stopped trying. Please try sending this message again. If the problem continues, contact your helpdesk.

Diagnostic information for administrators:

Generating server: InternalServer.com

jim.bob@external.com
#550 4.4.7 QUEUE.Expired; message expired ##

Original message headers:

Received: from InternalServer.com ([fe80::e19d:ee9a:2363:3cf1]) by
 InternalServer.com ([fe80::e19d:ee9a:2363:3cf1%10]) with mapi id
 14.01.0289.001; Wed, 2 Nov 2011 16:58:22 -0400
From: Dave Smith <dave@InternalServer.com>
To: jim.bob@external.com
Subject: test
Thread-Topic: test
Thread-Index: AcyZoidHFxxKXRpLTXea61OF3LLWzg==
Date: Wed, 2 Nov 2011 20:58:22 +0000
Message-ID: <11BAC54D274E62499BAEFF85D4A1C5A70EA2E5@InternalServer.com>
Accept-Language: en-CA, en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.240.211.233]
Content-Type: multipart/alternative;
      boundary="_000_11BAC54D274E62499BAEFF85D4A1C5A70EA2E5InternalServer.com_"
MIME-Version: 1.0
************************************************************

I have tried doing a test from the Exchange Server 2010 itself
telnet to the external recepient via telnet will not connect
when typing in there domain name on nslookup, it results back with 2 servers
mail.external.com 25
smtp.external.com 25
but I cannot connect to it via the telnet command

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