mx.michaelhernandezmd.com has no NS records.
NS records for this zone are defined at michaelhernandezmd.com.
NS records for this zone are defined at michaelhernandezmd.com.
Question and response
Question
dig mx.michaelhernandezmd.com. NS
Answer
The response has no answer records.
Authority
michaelhernandezmd.com. 3600 SOA dns.michaelhernandezmd.com. hostmaster.michaelhernandezmd.com. 1720463518 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0