ns1.netnation.com has no MX records.
Question and response
Question
dig ns1.netnation.com. MX
Answer
The response has no answer records.
Authority
netnation.com. 300 SOA ns1.netnation.com. hostmaster.netnation.com. 2025120304 10800 1800 3600000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0