ns1.hargray.com has no MX records.
Question and response
Question
dig ns1.hargray.com. MX
Answer
The response has no answer records.
Authority
hargray.com. 900 SOA ns1.cableone.net. dns.hargray.com. 2010081661 10800 3600 2592000 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0