DOCUMENT:Q214544  10-AUG-2001  [winnt]
TITLE   :NSLOOKUP Does Not Devolve MX Record Queries
PRODUCT :Microsoft Windows NT
PROD/VER:winnt:4.0
OPER/SYS:
KEYWORDS:kbWinNT400sp5fix

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The information in this article applies to:

 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
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SYMPTOMS
========

NSLOOKUP, which is included in Windows NT 4.0 Service Pack 4, does not devolve
record queries for MX and NS records.

Prior to Windows NT 4.0 Service Pack 4, NSLOOKUP displayed the following output:

   c:\nslookup
   > set q=mx
   > acmewho.com
   Server:   blue-dns.acmewho.com
   Address:  159.55.234.201

   acmewho.com   MX preference = 10, mail exchanger = cool22.acmewho.com
   acmewho.com   MX preference = 10, mail exchanger = cool23.acmewho.com
   acmewho.com   MX preference = 10, mail exchanger = tilda1.acmewho.com
   >

In Service Pack 4, the following output is displayed for the same query:

   > set q=mx
   > acmewho.com
   Server:   blue-dns.acmewho.com
   Address:  159.55.234.201

   dns.acmewho.com
        primary name server = blue-dns.dns.acmewho.com
        responsible mail addr = ism.acmewho.com
        serial  = 1140
        refresh = 10800 (3 hours)
        retry   = 1800 (30 mins)
        expire  = 2419200 (28 days)
        default TTL = 600 (10 mins)

If a trailing dot is specified, NSLOOKUP works as expected:

   > set q=mx
   > acmewho.com. (note the trailing dot)
   Server:   blue-dns.acmewho.com
   Address:  159.55.234.201

   acmewho.com   MX preference = 10, mail exchanger = cool22.acmewho.com
   acmewho.com   MX preference = 10, mail exchanger = cool23.acmewho.com
   acmewho.com   MX preference = 10, mail exchanger = tilda1.acmewho.com

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0. For
additional information, please see the following article in the Microsoft
Knowledge Base:

   Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0. This problem was
first corrected in Windows NT 4.0 Service Pack 5.

Additional query words:

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Keywords          : kbWinNT400sp5fix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : winnt:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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

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Copyright Microsoft Corporation 2001.