This article was previously published under Q166753
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, adialog 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.
This record is caused by a missing or incorrectly defined reverse lookupzone.
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 sectionof the online help for Microsoft Windows NT DNS Manager. The following listidentifies some common problems and examples of invalid reverse-lookupzones 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':