More than 800 global address lists are present

[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: 2005-11-17

The Microsoft® Exchange Server Analyzer Tool queries the Active Directory® directory service to determine whether the number of address lists in the All Global Address Lists group in Active Directory is greater than 800. If the Exchange Server Analyzer finds that there are more than 800 global address lists in your Exchange Server organization, the Exchange Server Analyzer displays a warning.

It is recommended that you reduce the number of address lists in the All Global Address Lists group to fewer than 800 to avoid severe latencies during the Recipient Update Service operations. If you have more than 800 global address lists in your Exchange Server organization, the Recipient Update Service incurs severe latencies as it stamps mail-enabled objects.

Alternatively, you can disable the Recipient Update Service and use scripts to handle the tasks that the Recipient Update Service performs.

For more information about disabling the Recipient Update Service, see the Microsoft Knowledge Base article 296479, "Requirements for Disabling the Recipient Update Service" (https://go.microsoft.com/fwlink/?Linkid=3052&kbid=296479).

For more information about address lists and the Recipient Update Service, see "Managing Recipients and Recipient Policies" in the Exchange Server 2003 Administration Guide (https://go.microsoft.com/fwlink/?LinkId=47617).