mail.nesteengineering.com has no CNAME records.
Question and response
Question
dig mail.nesteengineering.com. NS
Answer
The response has no answer records.
Authority
nesteengineering.com. 3529 SOA ns-fi.elisa.net. hostmaster.elisa.fi. 2025062512 3600 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0