mx.viraldirectco.com has no NS records.
NS records for this zone are defined at viraldirectco.com.
NS records for this zone are defined at viraldirectco.com.
Question and response
Question
dig mx.viraldirectco.com. NS
Answer
The response has no answer records.
Authority
viraldirectco.com. 3600 SOA dns.viraldirectco.com. hostmaster.viraldirectco.com. 1881191273 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0