Article ID: 970515 - Last Review: July 17, 2009 - Revision: 1.1

You receive an error message when you try to use the "New-Mailbox" command to create more than 1000 users who have the same “mailNickname” attribute (alias) in Exchange Server 2007 Service Pack 1

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SYMPTOMS

Microsoft Exchange Server 2007 Service Pack 1 (SP1) lets you create multiple users who have the same mailNickname attribute by using the New-Mailbox command in Exchange Management Shell. However, when you try to create more than 1000 users who have the same mailNickname attribute, you receive the following error message:
A proxy generator DLL on server <server name> could not be found or failed to initialize.  Proxy addresses for the current recipient cannot be calculated.  Please ensure that all the proxy addressgenerator DLLs have been installed on the target server.
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CAUSE

This issue occurs because of a hardcoded limitation that limits the number of users who have the same mailNickname attribute in a domain forest to 1000.
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RESOLUTION

To resolve this problem, install Update Rollup 9 for Exchange 2007 Service Pack 1.
For more information about Update Rollup 9 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 9 for Exchange Server 2007 Service Pack 1 (http://go.microsoft.com/fwlink/?LinkId=157085)
For more information about how to install the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007 (http://go.microsoft.com/fwlink/?LinkId=152570)
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MORE INFORMATION

For more information about the New-Mailbox command, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/aa997663.aspx (http://technet.microsoft.com/en-us/library/aa997663.aspx)
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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APPLIES TO
  • Microsoft Exchange Server 2007 Service Pack 1, when used with:
    • Microsoft Exchange Server 2007 Enterprise Edition
    • Microsoft Exchange Server 2007 Standard Edition
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Keywords: 
kbsurveynew kbexpertiseinter kbhotfixrollup kbqfe KB970515
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