gov.uk · DNS
No CAA record
Any certificate authority may issue a certificate for the domain.
- Find who issued your current certificate.
- Add a CAA record naming them; the one below names Let's Encrypt.
gov.uk. CAA 0 issue "letsencrypt.org"What it checks
CAA records at the name or above it.
Why it matters
CAA limits which certificate authorities may issue certificates for the domain.