asmtp-tls.lynero.net has no CNAME records.
Question and response
Question
dig asmtp-tls.lynero.net. NS
Answer
The response has no answer records.
Authority
lynero.net. 586 SOA ns.lynero.net. hostmaster.lynero.net. 2026030503 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0