mx.amornair.com has no NS records.
NS records for this zone are defined at amornair.com.
NS records for this zone are defined at amornair.com.
Question and response
Question
dig mx.amornair.com. NS
Answer
The response has no answer records.
Authority
amornair.com. 3600 SOA dns.amornair.com. hostmaster.amornair.com. 1316040409 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0