smail.fubonsecurity.com.tw has no NS records.
NS records for this zone are defined at fubonsecurity.com.tw.
NS records for this zone are defined at fubonsecurity.com.tw.
Question and response
Question
dig smail.fubonsecurity.com.tw. NS
Answer
The response has no answer records.
Authority
fubonsecurity.com.tw. 86400 SOA dns1.tfn.net.tw. hostmaster.dns1.tfn.net.tw. 2024071601 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0