Linked Server error while querying Active Directory

I am trying to query Active Directory using Linked Server using the following code in SQL Server 2008:

--Creation of Linked Server
EXEC sp_addlinkedserver 'ADSI', 'Active Directory Services 2.5',
'ADSDSOObject', 'adsdatasource'
GO
The above statement is successfully executed.

--Querying the Active Directory
select * from openquery(ADSI,'SELECT name, cn, givenName, description
FROM ''LDAP://test1.com/DC=test1,DC=com''
WHERE objectCategory = ''Person'' AND objectClass = ''user''')

The error which I get when executing the above query is:
Msg 7399, Level 16, State 1, Line 1
The OLE DB provider "ADSDSOObject" for linked server "ADSI" reported an error. The provider indicates that the user did not have the permission to perform the operation.
Msg 7321, Level 16, State 2, Line 1
An error occurred while preparing the query "SELECT name, cn, givenName, description
FROM 'LDAP://test1.com/DC=test1,DC=com'
WHERE objectCategory = 'Person' AND objectClass = 'user'" for execution against OLE DB provider "ADSDSOObject" for linked server "ADSI".

Please suggest me to resolve the above error.

Thanks
nag_damgAsked:
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nag_damgAuthor Commented:
How can i authenticate so there would be no permission error?
0
nag_damgAuthor Commented:
Is there any other alternative?
0
Eugene ZCommented:
<The provider indicates that the user did not have the permission to perform the operation.>
set the linked server to run  Domain login ...

 
also check
Querying Active Directory Through SQL Server Submitted by Boyan  
http://sql.dzone.com/news/querying-active-directory-thro 
0

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Microsoft SQL Server 2005

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