mx.hittnmisses.com has no NS records.
NS records for this zone are defined at hittnmisses.com.
NS records for this zone are defined at hittnmisses.com.
Question and response
Question
dig mx.hittnmisses.com. NS
Answer
The response has no answer records.
Authority
hittnmisses.com. 3600 SOA dns.hittnmisses.com. hostmaster.hittnmisses.com. 1474461791 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0