Active Directory cannot replicate the object to the Lotus Notes directory when you configure the Exchange Connector for Lotus Notes to use the "Immediate update" mode in the Exchange System Manager in Exchange 2000 Server or in Exchange Server 2003

Consider the following scenario:

• You have a server that is running IBM Lotus Notes.
• You have a server that is running Microsoft Exchange Server 2003 or Microsoft Exchange 2000 Server.
• You install a new Microsoft Exchange Server server to point to a different global catalog server.
• You migrate all the files to the same path of the new Exchange Server server to the Conndata folder on the new Exchange Server server.
• Active Directory directory services replicates the object to the Lotus Notes directory by using Microsoft Exchange Connector for Lotus Notes.

In this scenario, Active Directory cannot replicate the object to the Lotus Notes directory when you configure the Exchange Connector for Lotus Notes to use the Immediate update mode in the Exchange System Manager on an Exchange Server server.

Additionally, if you change the diagnostics logging level to the Maximum option, you may see the following message in the connector logs under the drive:\Program Files\Exchsrvr\Conndata folder.

However, Active Directory can replicate the object to the Lotus Notes directory in the Immediate full reload mode on the Exchange Connector for Lotus Notes.

The local directory assigns the USN-Changed attribute for the latest change. In other words, the USN-Changed attribute is maintained by each global catalog server. When the directory synchronization process checks for any changes from Active Directory, the directory synchronization process compares the value of the USN-Changed attribute and the USN record in the Usn.tbl file.

If the value of the USN-Changed attribute is higher, the directory synchronization process will synchronize the object of the Active Directory. Otherwise, the directory synchronization process will not synchronize the object. Because the USN record in the USN.tbl file is much higher than the value of the USN-Changed attribute, the directory synchronization process behaves as if the object should not be updated.

In this scenario, the new Exchange Server server and the original Exchange Server server are not using the same global catalog server. Because all the files in the Conndata folder are copied from the original Exchange Server server to the new Exchange Server server, the Usn.tbl file does not match the USN-Changed attribute of the current global catalog server. This behavior is the root cause of the issue.

You can manually change the number in the Usn.tbl file to match the USN-Changed attribute of the current global catalog server. To do this, follow these steps:

1. Locate the Usn.tbl file in the drive:\Program Files\Exchsrvr\Conndata\dxamex folder on the Exchange Server server.
2. Change the value of the USN record in the Usn.tbl file to 0
3. Save the value of the USN record that you changed in step 2, and then run the Immediate update mode on the Exchange System Manager snap-in again.

The same issue occurs when Active Directory replicates the object to the Novell GroupWise directory in the Immediate update mode on the Novell GroupWise connector.

For more information about the USN-Changed attribute, visit the following Microsoft Web site:
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft continues to update the tools that support interoperability among Lotus Domino R5 and Lotus Domino 6, Microsoft Exchange Server 2003, and Microsoft Windows Server 2003 Active Directory. The updated tools for Lotus Domino replace the following tools that are included with Exchange Server 2003 and with Microsoft Exchange Server 2003 Service Pack 2:

• Exchange Connector for Lotus Notes
• Calendar Connector for Lotus Notes
• Migration Wizard for Lotus Notes

To obtain these tools and to obtain guidance and additional resources, visit the following Microsoft Web site: These updated tools provide additional functionality and address several issues that customers reported with earlier versions of the tools.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.