DNSSEC and encrypted DNS solve different problems. When evaluating the accuracy of name resolution, it is necessary to separate data source authentication from transport confidentiality.

Basic approach

DNSSEC helps verify the source and integrity of signed DNS data. It does not encrypt DNS queries by itself. Bad signatures or incompatible records in the validation chain can cause validating resolvers to reject the response.

Application steps

  1. Check whether the domain name is signed and the DS record on the registrar side.
  2. Verify that the records in the parent zone are consistent with the keys on the authoritative server.
  3. Compare error onset time to key rollover, DNS migration, and signature times.

Practical example

While some resolvers may not be able to open the domain name if the old DS record is left when changing the DNS provider, a system that does not authenticate may behave differently. Reinstalling the site files does not solve this chain of trust issue.

Interpret the result correctly

Turning off verification does not eliminate the root cause. Follow the provider's DNSSEC migration procedure before removing records in production. Successful DNSSEC validation also does not guarantee that the web application is secure or accessible.

Source and follow-up reading

Protocol or command details: RFC 4033. The steps and example scenario are IPScans editorial narrative.