209-73-87-5.brainerd.net has no MX records.
Question and response
Question
dig 209-73-87-5.brainerd.net. MX
Answer
The response has no answer records.
Authority
brainerd.net. 60 SOA ns1.brainerd.net. hostmaster.brainerd.net. 2025021400 43200 3600 360000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0