ns2.hosting-nation.net has no MX records.
Question and response
Question
dig ns2.hosting-nation.net. MX
Answer
The response has no answer records.
Authority
hosting-nation.net. 86400 SOA ns1.hosting-nation.net. hn_mon.hosting-nation.com. 2026022606 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0