168.184.host.secureserver.net has no MX records.
Question and response
Question
dig 168.184.host.secureserver.net. MX
Answer
The response has no answer records.
Authority
168.184.host.secureserver.net. 3600 SOA ans01.domaincontrol.com. dns.jomax.net. 2025090900 26800 7200 604800 3600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0