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Q192306: XADM: Access Directory Through LDAP When Search Control is Set

Article: Q192306
Product(s): Microsoft Exchange
Version(s): winnt:2.5,5.5
Operating System(s): 
Keyword(s): kbADSI
Last Modified: 03-OCT-1999

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The information in this article applies to:

- Microsoft Exchange Server, version 5.5 
- Microsoft Active Directory Service Interfaces, version 2.5 
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SYMPTOMS
========

A Lightweight Directory Access Protocol (LDAP) client querying the Exchange
directory using LDAP may fail with an access denied error when the search
control is set to restrict access to the Global Address List as described in the
following article in the Microsoft Knowledge Base:

  Q182902 XADM: How to Set Up Container Level Search Control

This can happen even though the LDAP client authentication method appears to be
correct, using either Windows NT LAN Manager (NTLM) or simple authentication
(cn=<nt account>, cn=<nt domain>), and the Exchange Server computer
is configured to accept those LDAP authentication methods.

When you try to access the Exchange Server directory with Outlook Express using
the LDAP protocol, you get the following error message:

  The specified Directory Service has denied access. Check the Properties
  for this Directory Service and verify that your Authentication Type
  settings and parameters are correct.

On the server you see the event:

  Event ID: 1354
  Source: MSExchangeDS
  Description: "LDAP search request failed with error: 50."

CAUSE
=====

This happens because your LDAP client tries to connect to the directory using a
search base for which you don't have permissions.

MORE INFORMATION
================

To access through LDAP a directory with search control enabled, perform the
following steps:

1. Set the search rights and Address Book views in the Exchange Server directory
  according to the Knowledge Base article Q182902, "XADM: How To Setup
  Container Level Search Control."

2. Set the search base in your LDAP client to match the Address Book view you
  have access to. For example, if you create an Address Book view named "By
  City," in the organization Microsoft, the search base will be:

  "Cn=By City,ou=_ABVIEWS_,o=Microsoft" (or
  "LDAP://SERVER:389/Cn=By City,ou=_ABVIEWS_,o=Microsoft" using ADSI)

  For Outlook Express, the search base is configured in the advanced properties
  of the directory account.

3. If the simple authentication method is chosen, you will have to add the
  account which has the search control at the organization level into the
  Windows NT global group, Domain Admin.

NOTE: Simple rights modifications in the directory take effect immediately, but
you will have to stop and start the directory service if something has been
changed in the Windows NT security database, which is the case when you add the
account with the search control in the Windows NT global group, Domain Admin.

Additional query words:

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Keywords          : kbADSI 
Technology        : kbAudDeveloper kbExchangeSearch kbADSISearch kbExchange550 kbZNotKeyword2 kbADSI250
Version           : winnt:2.5,5.5
Issue type        : kbprb

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