n1.vf-ua.net has no MX records.
Question and response
Question
dig n1.vf-ua.net. MX
Answer
The response has no answer records.
Authority
vf-ua.net. 3600 SOA ns1.vf-ua.net. hostmaster.vf-ua.net. 2024112000 3600 1800 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0