unregistered.netregistry.net has no MX records.
Question and response
Question
dig unregistered.netregistry.net. MX
Answer
The response has no answer records.
Authority
netregistry.net. 1800 SOA gabe.ns.cloudflare.com. dns.cloudflare.com. 2397773373 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0