Troubleshooting / symptôme

A CAA record blocks Let’s Encrypt renewal

The ACME challenge may succeed while the certificate authority is not allowed to issue by the CAA policy.

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Real-world problem · V2

Quick troubleshooting view

What you are seeing

The ACME challenge may succeed while the certificate authority is not allowed to issue by the CAA policy.

Likely causes
  1. Missing or incorrect CAA issue record
  2. CAA inherited from a parent domain
  3. Different issuewild policy for wildcard certificates
First checks
  1. Query CAA on the FQDN and parent names
  2. Check issue and issuewild values
  3. Verify TTL
Recommended actions
  1. Correct only the component confirmed by the checks
  2. Retest the original symptom after the change
  3. Escalate with collected evidence when the cause remains unclear
Start Symptom → Cause →
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Open the complete detailed guideDetailed explanations and original troubleshooting content.

The ACME challenge may succeed while the certificate authority is not allowed to issue by the CAA policy.

Likely causes

  • Missing or incorrect CAA issue record
  • CAA inherited from a parent domain
  • Different issuewild policy for wildcard certificates
  • Old DNS configuration still cached

Checks in priority order

  1. Query CAA on the FQDN and parent names
  2. Check issue and issuewild values
  3. Verify TTL
  4. Retry issuance after propagation

When to escalate

Escalate when the failure affects multiple users, a production dependency is unavailable, or logs show a component outside your control. Include timestamps, scope, tests already performed, and the last known working state.

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