mx2.casjaydns.fyi has no CNAME records.
Question and response
Question
dig mx2.casjaydns.fyi. NS
Answer
The response has no answer records.
Authority
casjaydns.fyi. 5963 SOA dns.casjaydns.fyi. dns-admin.casjaydns.fyi. 2026010318 10800 3600 1209600 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0