The DNS software administrator has not configured the DNS software to send all log data to either the system logging facility (e.g., UNIX syslog or Windows Application Event Log) or an alternative logging facility with security configuration equivalent to or more restrictive than the system logging facility.

On name servers, DNS log data is typically more sensitive than system log data and, consequently, should benefit from security controls at least as restrictive as those for the system logging facility. DNS software administrators require DNS transaction logs for a wide variety of reasons including troubleshooting, intrusion detection, and forensics. These logs should be appropriately secured, having file permissions that restrict unauthorized changes or viewing, and archived, being appropriately backed-up and stored in order for them to be examined at a future time. Furthermore, it is required that the logs be reviewed daily.