ns.vfr.net has no MX records.
Question and response
Question
dig ns.vfr.net. MX
Answer
The response has no answer records.
Authority
vfr.net. 7300 SOA ns.garlic.com. root.garlic.com. 2023040400 3600 300 604800 7300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0