mx.fourcornersfishing.com has no NS records.
NS records for this zone are defined at fourcornersfishing.com.
NS records for this zone are defined at fourcornersfishing.com.
Question and response
Question
dig mx.fourcornersfishing.com. NS
Answer
The response has no answer records.
Authority
fourcornersfishing.com. 3600 SOA dns.fourcornersfishing.com. hostmaster.fourcornersfishing.com. 1263645325 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0