DNS

2 SERVFAIL

Server failure. The name server encountered an internal error while processing the query.

When You See This Code

The recursive resolver could not get an authoritative answer — commonly caused by DNSSEC validation failures, unreachable upstream nameservers, or misconfigured zones.

How to Fix

Try a different resolver (e.g., 8.8.8.8 or 1.1.1.1) to isolate the issue. If you control the zone, check DNSSEC signatures, SOA serial consistency, and nameserver reachability.

Specification

View RFC / Specification →

Cross-Protocol Equivalents

Comparisons

Guides

Glossary