coi003.confirmedcc.com has no MX records.
Question and response
Question
dig coi003.confirmedcc.com. MX
Answer
The response has no answer records.
Authority
confirmedcc.com. 60 SOA dns1.p07.nsone.net. hostmaster.nsone.net. 1593122489 3600 600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0