@property
    def valid(self):

        return bool(self.format)
If an MX lookup returns a CNAME and the MX record for the CNAME, the
dataset/ETHPy150Open zalando/turnstile/turnstile/models/specifications.py/Specification.valid--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/mail/test/test_mail.py/MXTestCase.test_cnameWithGlueRecords