vmailru.net has no MX records.
Question and response
Question
dig vmailru.net. MX
Answer
The response has no answer records.
Authority
vmailru.net. 60 SOA ns.mail.ru. hostmaster.mail.ru. 3563039157 28800 7200 604800 7200
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0