When PowerDNS auth is not configured for resolution, PowerDNS recursor can request public DNS.

[airsmon]

Enterprises deploy PowerDNS Auth and PowerDNS Recursor internally. When test.sample.com is not configured in Auth and has resolution records in public network DNS. How should recursor be configured
1，When requesting a recursor, you first query it in Auth. If no one is found, you will continue to return the result to the public network DNS request

• zone: sample.com
  recurse: true
  notify_allowed: true
  forwarders:
  • 10.64.40.40
  • 8.8.8.8