mx.poloralplauren.com has no NS records.
NS records for this zone are defined at poloralplauren.com.
NS records for this zone are defined at poloralplauren.com.
Question and response
Question
dig mx.poloralplauren.com. NS
Answer
The response has no answer records.
Authority
poloralplauren.com. 3600 SOA dns.poloralplauren.com. hostmaster.poloralplauren.com. 1132069569 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0