Authoritative DNS timeouts block certificate validation
Validation fails with DNS timeouts or SERVFAIL because authoritative nameservers drop queries from the validation source.
Tier I · Proven The best-established problems.
6 public reports · first reported 6 October 2026 · last reported 10 October 2026
What's going wrong
Several persons found that domains failed validation with DNS query timeouts for A and AAAA records, even though public resolvers got answers.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 6 reports are about, and how many came each month.
- Related problems.
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