DNS SERVFail — DNS server failed
Field: DNSPriority: High
What does this error mean?
The DNS solver was unable to provide a valid response to the request.
Probable causes
- DNSSEC failed
- inaccessible authority server
- delegation problem
- internal error of the solver
Verification and resolution
- Compare multiple solvers
- Directly interrogate the Authoritative Servers
- Check DNSSEC and the delegation chain
- Control DNS server logs
Precaution: Do not confuse SERVFAIL with NXDOMAIN: the name may exist but the resolution has failed.
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