Publish the intended policy
List the certificate authorities that your organization actually uses and confirm the exact values and tags required by each. A typo or missing authorization can prevent a legitimate certificate renewal, so coordinate changes with the teams responsible for certificates.
Consider whether the policy should cover the base domain, subdomains, or both. DNS record inheritance and lookup behavior follow the relevant standards and provider setup; verify the records at the authoritative zone rather than assuming a parent entry covers every case.
Validate before and after changes
Check the published CAA answers and confirm that planned certificate issuance is permitted. If you use a separate account or vendor for a subdomain, include its certificate workflow in the review.
Keep the policy current as providers change, and remove obsolete entries only after confirming no certificate process relies on them. A restrictive record is useful only when its maintenance matches real issuance operations.