mx.bobawok.com has no NS records.
NS records for this zone are defined at bobawok.com.
NS records for this zone are defined at bobawok.com.
Question and response
Question
dig mx.bobawok.com. NS
Answer
The response has no answer records.
Authority
bobawok.com. 3600 SOA dns.bobawok.com. hostmaster.bobawok.com. 1871845473 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0