Microsoft DNS Server Reverse Lookup Error Adding Host Record

Last reviewed: December 18, 1997
Article ID: Q166753

The information in this article applies to:

Microsoft Windows NT Server version 4.0

SYMPTOMS

When adding a host record to Microsoft Windows NT 4.0 Domain Name Service (DNS) Server, if you check "Create Associated PTR Record" and click Add, a dialog box appears with the message:

   Warning: Creation of the associated pointer record failed, probably
   because the referenced Reverse-Lookup zone could not be found.

NOTE: This error does not occur if the Reverse-Lookup zone already exists.

CAUSE

This record is caused by a missing or incorrectly defined reverse lookup zone.

RESOLUTION

For instructions on creating a DNS Reverse-lookup zone see the entry "Creating a Primary Zone in the in-addr.arpa domain" in the How To section of the online help for Microsoft Windows NT DNS Manager. The following list identifies some common problems and examples of invalid reverse-lookup zones and steps to correct them.

A reverse-lookup is not entered at all.
A zone name entered without a period between the address and the in-addr.arpa section of the name, or with a period instead of a hyphen between 'in' and 'addr':
```
      Incorrect:  6.10.10in-addr.arpa
      Incorrect:  6.10.10.in.addr.arpa
```
```
      Correct:    6.10.10.in-addr.arpa
```

The network number is not correctly entered, such as (assuming an IP address of 10.10.6.x):

      Incorrect:  10.10.6.in-addr.arpa

      Correct:    6.10.10.in-addr.arpa

A domain name is entered instead of in-addr.arpa.

      Incorrect:  6.10.10.test.domain.com

      Correct:    6.10.10.in-addr.arpa

An incorrectly subnetted reverse-lookup zone is entered.
For additional information, please see the following article in the Microsoft Knowledge Base:
```
      ARTICLE-ID: Q174419
      TITLE     : How to Configure a Subnetted Reverse Lookup Zone on
                  Windows NT
```

Keywords          : NTSrv nttcp kberrmsg
Version           : 4.0
Platform          : winnt

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Last reviewed: December 18, 1997
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