Microsoft KB Archive/260060

= XCON: Routing Calculation Complete and Registry Appears Corrupted =

Article ID: 260060

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange Server 4.0 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition
 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q260060



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When the Microsoft Exchange Server system attendant performs a routing calculation, the following event may be logged in the Microsoft Windows NT Event Viewer application event log:

Event ID: 5000

Type: Error

Source: MSExchangeSA

Description: Recalculation of the routing table is complete. Result: The

message transfer agent (MTA) information in the Windows NT registry appears to be corrupted.

Take steps to repair or restore the registry entries for the MTA.



CAUSE
This issue can occur if the message transfer agent (MTA) is missing a crucial registry entry that defines its own X.500 Distinguished Name (DN).



RESOLUTION
To resolve this issue:  Add the missing registry entry:WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

 Start Registry Editor (Regedt32.exe). Locate the following key in the registry:

HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/MSExchangeMTA/Parameters

 On the Edit menu, click Add Value, and then add the following registry value

Value Name: X500 DN

Data Type: REG_SZ:

Value: /o= /ou= /cn=Configuration/cn=Servers/cn= /cn=Microsoft MTA

In the Value data,  is your correct organization name,   is your correct site name, and   is the correct name of the Exchange Server computer. Quit Registry Editor.</ol> </li> Stop and start the Exchange Server MTA services.</li> Recalculate your site routing: <ol style="list-style-type: lower-alpha;"> In the Exchange Server Administrator program, click to expand the Site object, click Configuration, and double-click the Site Addressing object to open its properties.</li> Click the Routing tab, and then click Recalculate Routing. The following message is displayed:

It will take several minutes for the new routing information to be replicated across your site and then take effect.

</li> Check the Event Viewer application event log and wait for the following event to be logged:

Event ID: 5000

Source: MSExchangeSA

Type: Information

Category: General

Description: Recalculation of the routing table is Complete. Result: The

operation has completed successfully.

</li></ol> </li></ol>

Keywords: kbprb KB260060

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