The Host record for the local computer cannot be found in the DNS database

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]  

Topic Last Modified: 2006-06-05

Microsoft® Exchange Server 2007 setup cannot continue because the Host (A) record for this computer cannot be found in the Domain Name System (DNS) database.

Exchange 2007 setup requires that the local computer have a valid HOST (A) record registered with the authoritative DNS database for the domain.

Microsoft Exchange depends on DNS Host (A) records for the IP Address of its next internal or external destination server.

To resolve this issue:

  • Verify that the local TCP/IP configuration points to the correct DNS server.

    To verify the local TCP/IP configuration

    1. Review the local TCP/IP configuration. For more information, see "Configure TCP/IP to use DNS" (
  • Use Nslookup.exe to verify that the Host (A) record exists on the DNS server. For more information, see "To verify A resource records exist in DNS" (

For information about DNS name resolution, troubleshooting, and Host (A) records, see the following: