mail.vdsid.ru has no MX records.
Question and response
Question
dig mail.vdsid.ru. MX
Answer
The response has no answer records.
Authority
vdsid.ru. 3600 SOA isphoster.net. tech.isphoster.net. 2019125147 3600 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0