An external NDR message is sent to all recipients on a distribution list in Exchange Server 2007 Service Pack 1

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Article ID: 945309 - View products that this article applies to.
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SYMPTOMS

On a computer that is running Microsoft Exchange Server 2007 Service Pack 1 (SP1), an e-mail message comes from an internal relay domain instead of from an authoritative domain. This e-mail message is sent to a distribution list that contains external contacts.

When this occurs, the return path is set to the distribution list's primary SMTP address regardless of the configuration of the delivery report settings.

In this case, if an external recipient generates a non-delivery report (NDR) message in the recipient's messaging system, the external NDR message is sent to all recipients on the distribution list. This situation may cause unexpected message traffic.

RESOLUTION

To resolve this problem, install Update Rollup 1 for Microsoft Exchange Server 2007 Service Pack 1 on the server. For more information about Update Rollup 1 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 1 for Exchange Server 2007 Service Pack 1
For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about internal relay domains and about authoritative domains, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb124423.aspx
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
817903 New naming schema for Exchange Server software update packages

Properties

Article ID: 945309 - Last Review: March 10, 2008 - Revision: 1.2
APPLIES TO
  • Microsoft Exchange Server 2007 Service Pack 1, when used with:
    • Microsoft Exchange Server 2007 Enterprise Edition
    • Microsoft Exchange Server 2007 Standard Edition
Keywords: 
kbexpertiseinter kbqfe kbhotfixrollup KB945309

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