ns.ekvia.net has no MX records.
Question and response
Question
dig ns.ekvia.net. MX
Answer
The response has no answer records.
Authority
ekvia.net. 3600 SOA ns1.ekvia.com. hostmaster.ekvia.com. 2016070718 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0