smtp.datex.ca has no NS records.
NS records for this zone are defined at datex.ca.
NS records for this zone are defined at datex.ca.
Question and response
Question
dig smtp.datex.ca. NS
Answer
The response has no answer records.
Authority
datex.ca. 900 SOA ns-1845.awsdns-38.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0