decidedly.arcticruin.com has no MX records.
Question and response
Question
dig decidedly.arcticruin.com. MX
Answer
The response has no answer records.
Authority
arcticruin.com. 1800 SOA ns1.dyna-ns.net. hostmaster.arcticruin.com. 2026013001 16384 2048 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0