mx.easydata-online.com has no CNAME records.
Question and response
Question
dig mx.easydata-online.com. NS
Answer
The response has no answer records.
Authority
easydata-online.com. 3583 SOA dns.easydata-online.com. hostmaster.easydata-online.com. 1555220048 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0