Article ID: 957485 - Last Review: March 18, 2009 - Revision: 1.1

The Test-OwaConnectivity command returns a warning message in Exchange Server 2007 when there is a disjoint namespace

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SYMPTOMS

Consider the following scenario:
  • In a Microsoft Exchange Server 2007 environment, the NetBIOS domain name does not match the first part of the fully qualified domain name (FQDN).
  • Microsoft Office Outlook Web Access is configured to use an authentication method other than forms-based authentication (FBA).
  • You run the Test-OwaConnectivity command to verify that Outlook Web Access is running correctly.
In this scenario, the Test-OwaConnectivity command returns the following error message:
WARNING: The test was unable to log on to Outlook Web Access because of an authentication failure. URL: xxxx Mailbox: xxxx User: xxxx WARNING: The test for URL 'xxxx' failed.
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CAUSE

This issue occurs because Exchange Server rebuilds the network credential and uses only the NetBIOS domain name when non-FBA authentication methods are used. Authentication fails because the NetBIOS domain name does not match the FQDN in a disjoint namespace scenario.
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RESOLUTION

To resolve this problem, install Update Rollup 7 for Exchange 2007 Service Pack 1.

For more information about Update Rollup 7 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 7 for Exchange Server 2007 Service Pack 1 (http://go.microsoft.com/fwlink/?LinkId=157083)
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 (http://go.microsoft.com/fwlink/?LinkId=152570)
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MORE INFORMATION

For more information about the Test-OwaConnectivity command, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/aa997682.aspx (http://technet.microsoft.com/en-us/library/aa997682.aspx)
For more information about disjoint namespace scenarios, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb676377(EXCHG.80).aspx (http://technet.microsoft.com/en-us/library/bb676377(EXCHG.80).aspx)
For more information about forms-based authentication, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb123719.aspx (http://technet.microsoft.com/en-us/library/bb123719.aspx)
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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APPLIES TO
  • Microsoft Exchange Server 2007 Service Pack 1, when used with:
    • Microsoft Exchange Server 2007 Standard Edition
    • Microsoft Exchange Server 2007 Enterprise Edition
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Keywords: 
kbexpertiseadvanced kbsurveynew kbhotfixrollup kbqfe KB957485
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