mail14.elevon.com has no CNAME records.
Question and response
Question
dig mail14.elevon.com. NS
Answer
The response has no answer records.
Authority
elevon.com. 600 SOA ns67.domaincontrol.com. dns.jomax.net. 2023051000 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0