I have a powerdns-recursor name server, which forwards, the queries to a powerdns authoritative name server, based on the requesting client IP.
The authoritative server, uses a remote REST API backend, Which in turn hashes the query, and checks a mysql db, for the answer.
Is it possible, to configure PDNS to query the backend, even if the SOA for a specific domain, is not available , Since we do not have the list of the domains, which are hashed.