ns2.dns-parking.com has no MX records.
Question and response
Question
dig ns2.dns-parking.com. MX
Answer
The response has no answer records.
Authority
dns-parking.com. 3600 SOA ns1.dns-parking.com. dns.hostinger.com. 23 14400 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0