x5bec7a17.host.myracloud.com has no MX records.
Question and response
Question
dig x5bec7a17.host.myracloud.com. MX
Answer
The response has no answer records.
Authority
myracloud.com. 2560 SOA a.myradns.net. support.myrasecurity.com. 2772722381 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0