mx.traveldiscounted.com has no NS records.
NS records for this zone are defined at traveldiscounted.com.
NS records for this zone are defined at traveldiscounted.com.
Question and response
Question
dig mx.traveldiscounted.com. NS
Answer
The response has no answer records.
Authority
traveldiscounted.com. 3600 SOA dns.traveldiscounted.com. hostmaster.traveldiscounted.com. 1385081704 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0