It is. They went so far as to HAVE the record, but nothing as to what their mailserver should do when it encounters a bad mail. Japan is really bad about this too - they're high tech, but it's like they went full stop in certain areas. We get a lot of spam from that part of the world because their mailservers are wide open. I always check using mxtoolbox and tell complainers exactly why their mail got stopped, or why they got the spam.