From:	postmaster@Registrar
Subject: Registrar, Terminate domain ___ please.

Registrar, Terminate domain ___ please.
They are in breach of RFCs, having a disfunctional postmaster@ &/or
hostmaster address.  They are spamming me with reject mail, (as a
result of a spammer masquerading as me spamming them, of which my
domains are innocent).  

Their incompetent, too simplistic auto response mechanism will be
spamming many innocents world wide, abusing your registry DNS to
degrade the Internet, wasting bandwidth & human time

I append their noise with full headers, intact unchanged.