The legacyExchangeDN attribute for the Exchange organization is invalid

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at https://go.microsoft.com/fwlink/?linkid=34707.]  

Topic Last Modified: 2007-02-01

The Microsoft® Exchange Server Analyzer Tool queries the Active Directory® directory service to determine the format for the legacyExchangeDN attribute on the Exchange organization object. If the Exchange Server Analyzer finds the legacyExchangeDN attribute invalid or malformed, an error is displayed.

This value for this attribute is of the form /o=Organization, where Organization is the name of the Exchange organization. If the value begins with anything other than /o= or /O=, it is considered malformed. This problem should be corrected as soon as possible.

To correct this error for Exchange 2000 Server or Exchange Server 2003

  1. Perform the Exchange Server ForestPrep process. During this process, if the Setup program determines that legacyExchangeDN is in the wrong format, it will automatically correct the problem.

To correct this error for Exchange Server 2007

  1. Perform the Exchange Server PrepareAD process. During this process, if the Setup program determines that legacyExchangeDN is in the wrong format, it will automatically correct the problem.

For more information about the ForestPrep process, see the Microsoft Knowledge Base article 312371, "HOW TO: Prepare the Forest by Using ForestPrep in Exchange 2000 Server" (https://go.microsoft.com/fwlink/?linkid=3052&kbid=312371).

For more information about the PrepareAD process, see "How to Prepare Active Directory and Domains" (https://go.microsoft.com/fwlink/?LinkId=78453).

For more information about the legacyExchangeDN attribute and how to change it, see the following Microsoft Knowledge Base articles: