CAA-Eintragsabfrage

CAA-Einträge legen fest, welche Zertifizierungsstellen HTTPS-Zertifikate für einen Namen ausstellen dürfen. Ein falscher CAA-Eintrag ist eine häufige Ursache für fehlgeschlagene Let’s Encrypt-Verlängerungen.

Reading CAA Einträge

0 issue "letsencrypt.org" – Let’s Encrypt may issue normal certificates.
0 issuewild "sectigo.com" – Sectigo may issue wildcard certificates.
0 iodef "mailto:security@example.com" – where CAs report refused requests.

If a name has no CAA records, CAs check its parent names up to the domain. If none have any, every CA may issue.

Fixing “CAA record prevents issuance”

Add an issue record for the CA you actually use, or remove restrictive records you no longer need. Then request the certificate again.

Frequently asked questions

Do I need CAA records?

No, they are optional. They add protection by stopping other CAs from issuing certificates for your domain.

Which value do I use for Let’s Encrypt?

0 issue "letsencrypt.org". Add issuewild as well if you use wildcard certificates.

CAA-Eintragsabfrage

Reading CAA Einträge

Fixing “CAA record prevents issuance”

Frequently asked questions

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