ns3.controlpanel.host has no MX records.
Question and response
Question
dig ns3.controlpanel.host. MX
Answer
The response has no answer records.
Authority
controlpanel.host. 3600 SOA ns31.cloudns.net. support.cloudns.net. 2026022503 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0