rolla.hwy66.com has no MX records.
Question and response
Question
dig rolla.hwy66.com. MX
Answer
The response has no answer records.
Authority
hwy66.com. 3600 SOA ns1.fidnet.com. root.fidnet.com. 2018101100 7200 3600 3600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0