Microsoft KB Archive/272726

= XADM: Administrators Are Able to Browse User List of Untrusted Domains =

Article ID: 272726

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q272726



SUMMARY
By design, administrators are able to access the user lists of non-trusted Microsoft Windows NT domain controllers listed in the Primary Windows NT Account section of the New Mailbox dialog box.



MORE INFORMATION
If you are an administrator, you can use the Microsoft Exchange Administrator program to create a Null (anonymous) session to the primary domain controller of the non-trusted domain. You then receive a user list and a list of trusted domains for that domain.

To prevent anonymous users from receiving user list information, you must have Windows NT Server 4.0 Service Pack 3 (SP3) installed. Earlier service packs of Windows NT Server 4.0 do not include a mechanism to restrict anonymous users from accessing user list information.

For additional information about restricting anonymous users, click the article number below to view the article in the Microsoft Knowledge Base:

143474 Restricting Information Available to Anonymous Logon Users

Additional query words: DisableAnonymous

Keywords: kbinfo KB272726

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