zone2smtp.skytouchhos.com has no NS records.
NS records for this zone are defined at skytouchhos.com.
NS records for this zone are defined at skytouchhos.com.
Question and response
Question
dig zone2smtp.skytouchhos.com. NS
Answer
The response has no answer records.
Authority
skytouchhos.com. 900 SOA ns-1637.awsdns-12.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0