mx43696.bak.secmail.com has no NS records.
NS records for this zone are defined at secmail.com.
NS records for this zone are defined at secmail.com.
Question and response
Question
dig mx43696.bak.secmail.com. NS
Answer
The response has no answer records.
Authority
secmail.com. 86400 SOA dns1.solutions.fi. dnsmaster.solutions.fi. 2026022104 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0