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Slow performance when you search a GAL by using an EAS device in an Exchange Server 2010 environment
Article ID: 2784569 - View products that this article applies to.
Consider the following scenario:
This issue occurs because the EAS device uses Lightweight Directory Access Protocol (LDAP) queries for an Ambiguous Name Resolution (ANR) search. Generally, LDAP queries are not optimal for an EAS device.
To resolve this issue, install Exchange Server 2010 Service Pack 3 (SP3) on the Exchange Server 2010 servers. For more information about Exchange Server 2010 SP3, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2808208/ )Description of Exchange Server 2010 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about ANR, go to the following Microsoft website:
General information about ANRThe third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.