ca.x360cloud.axcient.com has no MX records.
Question and response
Question
dig ca.x360cloud.axcient.com. MX
Answer
The response has no answer records.
Authority
ca.x360cloud.axcient.com. 300 SOA ns1.p201.dns.oraclecloud.net. hostmaster.ca.x360cloud.axcient.com. 24 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0