smtp.temiandu.com has no NS records.
NS records for this zone are defined at temiandu.com.
NS records for this zone are defined at temiandu.com.
Question and response
Question
dig smtp.temiandu.com. NS
Answer
The response has no answer records.
Authority
temiandu.com. 1800 SOA desiree.ns.cloudflare.com. dns.cloudflare.com. 2397005873 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0