mx.zynovartex.com has no NS records.
NS records for this zone are defined at zynovartex.com.
NS records for this zone are defined at zynovartex.com.
Question and response
Question
dig mx.zynovartex.com. NS
Answer
The response has no answer records.
Authority
zynovartex.com. 3600 SOA dns.zynovartex.com. hostmaster.zynovartex.com. 1844042387 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0