OCSP status responses

OCSP requests could have different responses if submitted to the CA's internal OCSP or to the OCSP subsystem. The possible cases are:

CA Certificate	Serial	Internal OCSP	OCSP Subsystem
Valid	Valid	Good	Good
Not Valid	Valid	Unknown	Unknown
Valid	Revoked	Revoked	Revoked
Valid	Not valid	Unknown	Good

For the case were subject is not valid (e.g. do not exist) the Good answer is accepted by the specification rfc6960 because it is not revoked.