drvpn.48forty.com has no MX records.
Question and response
Question
dig drvpn.48forty.com. MX
Answer
The response has no answer records.
Authority
48forty.com. 600 SOA ns53.domaincontrol.com. dns.jomax.net. 2025121002 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0