auth.casjay.pro has no MX records.
Question and response
Question
dig auth.casjay.pw. MX
Answer
The response has no answer records.
Authority
casjay.pw. 38400 SOA dns.casjay.pw. dns-admin.casjay.pw. 2026010306 10800 3600 1209600 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0