vpsmx.net has no MX records.
Question and response
Question
dig vpsmx.net. MX
Answer
The response has no answer records.
Authority
vpsmx.net. 1800 SOA ada.ns.cloudflare.com. dns.cloudflare.com. 2396754279 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0