DOCUMENT:Q255787 06-AUG-2002 [winnt] TITLE :Exchange Discovery Takes a Long Time PRODUCT :Microsoft Windows NT PROD/VER::2.1 OPER/SYS: KEYWORDS:kbenv kbtool ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Metadirectory Services 2.1 ------------------------------------------------------------------------------- SYMPTOMS ======== In Microsoft Metadirectory Services (MMS), full discovery of a Microsoft Exchange site may take a long time. CAUSE ===== There are two issues that influence the performance characteristics of an Exchange discovery: - When an Exchange Lightweight Directory Access Protocol (LDAP) discovery encounters distribution lists (DLs) in leaf nodes, the DLs may be dereferenced object by object. - Attempts to discover the Microsoft DMD and Configuration containers are unsuccessful and the time-outs introduce a significant delay. RESOLUTION ========== To decrease the time it takes to perform a discovery, make the following changes: If the search is a single-level search: 1. In the Action panel, click "Configure the Management Agent". 2. Click the Connected Directory Specifics tab. 3. Click the Advanced tab. 4. Click to clear the "Consider person and list entries as non-leaf nodes" check box. If the search is a full tree search starting at the root: 1. In the Action panel, click "Configure the Management Agent". 2. Click the Connected Directory Specifics tab. 3. Click the Advanced tab. 4. Click the "DNs to Exclude During the Discovery" tab. 5. Type the distinguished names (DNs) of the Exchange schema extensions objects. Typically, these are: cn=Microsoft DMD,ou=,o= and cn=Configuration,ou=,o= Please note the following items: - The discovery of the Microsoft DMD (Microsoft Directory Management domain) container introduces the most significant delay. - The non-leaf setting for users and lists is only effective when you perform single-level searches. STATUS ====== Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. Additional query words: Zoomit Via MA zscript genlogs ====================================================================== Keywords : kbenv kbtool Technology : kbMMSSearch kbMMS210 Version : :2.1 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.