mail.ip-connect.vn.ua has no MX records.
Question and response
Question
dig mail.ip-connect.vn.ua. MX
Answer
mail.ip-connect.vn.ua. 5 CNAME eye.ip-connect.vn.ua.
Authority
ip-connect.vn.ua. 60 SOA ns-soa.anyplace-hosting.net. anyplace-site.snak.vn.ua. 2024020304 3600 600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0