ip-45-56-67-48.cloudezapp.io has no MX records.
Question and response
Question
dig ip-45-56-67-48.cloudezapp.io. MX
Answer
The response has no answer records.
Authority
cloudezapp.io. 300 SOA ns1.cloudez.io. root.cloudez.io. 1772597121 3600 1800 2419200 86400
Additional
. 0 OPT ; payload 1024, xrcode 0, version 0, flags 0