mx.reyessite.com has no NS records.
NS records for this zone are defined at reyessite.com.
NS records for this zone are defined at reyessite.com.
Question and response
Question
dig mx.reyessite.com. NS
Answer
The response has no answer records.
Authority
reyessite.com. 3600 SOA dns.reyessite.com. hostmaster.reyessite.com. 1893846755 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0