mx.cullmanfleamarket.com has no NS records.
NS records for this zone are defined at cullmanfleamarket.com.
NS records for this zone are defined at cullmanfleamarket.com.
Question and response
Question
dig mx.cullmanfleamarket.com. NS
Answer
The response has no answer records.
Authority
cullmanfleamarket.com. 3600 SOA dns.cullmanfleamarket.com. hostmaster.cullmanfleamarket.com. 1975585466 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0