Lotus Notes Client versions that are tested with the Exchange Notes Connector (316035)

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Lotus frequently releases versions of the Notes Client through maintenance updates (MUs) or maintenance releases (MRs). Therefore, Microsoft cannot test every version of the Notes Client that is released.

Important This table is not a list of the supported versions of the Notes Client. Instead, this table includes the versions of the Notes Client that Microsoft used to test the Exchange Connector for Lotus Notes.

Exchange Version	Lotus Notes Client Version
Exchange Server 5.5 SP2	The recommend version is Notes Client 4.62. Notes Client version R5 is not supported.*
Exchange Server 5.5 SP3	Notes Client 5.0.3
Exchange Server 5.5 SP4	Notes Client 5.0.4
Exchange 2000 (RTM)	Notes Client 5.0.3
Exchange 2000 SP1	Notes Client 5.0.3
Exchange 2000 SP2	Notes Client 5.0.4
Exchange 2000 SP3	Notes Client 5.0.4
Exchange Server 2003	Notes Client 6.0.3 running on Microsoft Windows 2000 Server
Exchange Server 2003 Service Pack 1	Notes Client 6.5.1 running on Microsoft Windows 2000 Server
Exchange Server 2003 Service Pack 2 with Web Release 2.2 or later of the Notes Connector	Notes Client 6.5.4 running on Microsoft Windows Server 2003

For more information about Exchange Server 5.5 SP2 and the Notes Client version R5, click the following article number to view the article in the Microsoft Knowledge Base: For more information about coexistence with Lotus Domino/Notes Version 6.0 (r6), click the following article number to view the article in the Microsoft Knowledge Base: For more information, click the following article number to view the article in the Microsoft Knowledge Base: The Exchange Notes Connector uses the application programming interfaces (APIs) that the Notes Client provides. Therefore, the connector is dependant on the functionalities that are built into the Notes Client. Because of this dependency, one common troubleshooting step is changing the version of the Notes Client that the Exchange Notes Connector uses.

Issues with directory synchronization are the most common issues that Product Support Services (PSS) encounters which are resolved by downgrading the Notes Client. However, PSS has also encountered issues with message flow, message conversion, and migrations that are resolved by downgrading the Notes Client. The following list is a partial list of some of the most common issues that PSS has encountered that are resolved by downgrading the Notes Client:

• Directory synchronization stops after X number of users. X is not necessarily the same number every time, but can be.
• The directory synchronization process, Lsdxa.exe, stops responding (crashes) or generates a Dr. Watson report during directory synchronization.
• The Migration Wizard (Migrate.exe) crashes or generates a Dr. Watson report when you try to migrate users from Notes or Domino to Exchange.

Microsoft makes all commercially reasonable efforts to support the latest versions of the Notes Client in updates to the Exchange Notes Connector.

In Exchange Server 5.5 SP3 and later, Microsoft does not test Notes R4.6.x Clients with the Exchange Notes Connector because Lotus makes the Notes R5 Client backward compatible, with the ability to connect to Lotus Notes R4.6.x Servers. Because the Notes R5 Client is capable of connecting to Notes R4.6.x Servers, Microsoft recommends that you install the appropriate client based on the preceding table.

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.