smtprelay.qcnscruise.com has no NS records.
NS records for this zone are defined at qcnscruise.com.
NS records for this zone are defined at qcnscruise.com.
Question and response
Question
dig smtprelay.qcnscruise.com. NS
Answer
The response has no answer records.
Authority
qcnscruise.com. 900 SOA ns-123.awsdns-15.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0