mx.joevian.com has no NS records.
NS records for this zone are defined at joevian.com.
NS records for this zone are defined at joevian.com.
Question and response
Question
dig mx.joevian.com. NS
Answer
The response has no answer records.
Authority
joevian.com. 3600 SOA dns.joevian.com. hostmaster.joevian.com. 1932745660 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0