return NOERROR on CAA records #24
Description
from https://letsencrypt.org/docs/caa/#servfail
If you don’t have DNSSEC enabled and get a SERVFAIL, the second most likely reason is that your authoritative nameserver returned NOTIMP, which as described above is an RFC 1035 violation; it should instead return NOERROR with an empty response. If this is the case, file a bug or a support ticket with your DNS provider.