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Q224105: XCLN: LDAP Query Returns Error Message: This Name Could Not…

Article: Q224105
Product(s): Microsoft Exchange
Version(s): WINDOWS:98
Operating System(s): 
Keyword(s): 
Last Modified: 22-JUN-2001

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The information in this article applies to:

- Microsoft Outlook 98 
- Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you use Outlook, Outlook Express, or Pocket Outlook Address Book
(Lightweight Directory Access Protocol [LDAP]) in Exchange Server, you may
receive the following error messages:

  There are no entries in the Directory Service that match your search
  criteria.

-or-

  This name could not be matched.

CAUSE
=====

The Search tab on the LDAP protocol object in the Microsoft Exchange Server
Administrator program may be set to something other than "Treat "any" substring
searches as "initial" substring searches".

You can find the Search tab by navigating to the following objects in the
Exchange Server Administrator program:

  Organization\Site\Protocols Container\LDAP(Directory)

-or-

  Organization\Site\Servers Container\Protocols\LDAP(Directory) Settings -
  Server

RESOLUTION
==========

To resolve this problem, change the Search tab on the LDAP protocol object in
the Administrator program to "Treat "any" substring searches as "initial"
substring searches".

WORKAROUND
==========

Search Options Include:

- "Treat "any" substring searches as "initial" substring searches (fast)"
  Specifies that only initial substring searches will be performed. Final
  substring searches will not be performed, and any substring searches are
  converted to initial substring searches (which will return partial but
  sometimes incomplete results).

- "Allow only "initial" substring searches (fast)" Specifies that only initial
  substring searches will be performed. Final substring searches and any
  substring searches will not be performed.

- "Allow all substring searches (slow)"
  Specifies that all substring searches will be performed, including initial,
  any, or final.

LDAP allows LDAP clients to perform searches when they are connected to a
directory. For example, if you search the directory for a particular user, LDAP
returns the entry for that user. LDAP matches the requested information with an
entry in the directory by performing substring searches. There are three types
of substring searches that LDAP can perform:

- Initial substring search
  The directory matches the substring that the user specifies against the
  beginning of an attribute in the directory. For example, an initial substring
  search for "ne" in a display name would return Suzan Fine. Initial substring
  searches are typically faster than the other types of substring searches.

- Final substring search
  The directory matches the substring that the user specifies against the end of
  an attribute in the directory. For example, a final substring search for "St"
  in a display name would return Stacey and Steve, but not Sean or Shannon.
  Final substring searches are typically slower than initial substring
  searches.

- Any substring search
  The directory matches the substring that the user specifies against any
  portion of an attribute in the directory. For example, a substring search for
  "r" in a display name would return Maria and Raymond. Any substring searches
  are the slowest substring searches.

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

For additional information, click the article numbers below to view the articles
in the Microsoft Knowledge Base:

  Q177724 XADM: Cannot Find Exchange Server Recipients Using LDAP Queries

  Q198562 XCLN: Cannot Find Users on Referral Server Using Outlook Express

  Q195792 OL2000: (CW) How to Install and Use the LDAP Service

Additional query words:

======================================================================
Keywords          :  
Technology        : kbOutlookSearch kbOutlook98Search kbZNotKeyword3
Version           : WINDOWS:98
Issue type        : kbprb

=============================================================================

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