mail.vychod.net has no CNAME records.
Question and response
Question
dig mail.vychod.net. NS
Answer
The response has no answer records.
Authority
vychod.net. 60 SOA ns.vychod.net. hostmaster.vychod.net. 2026022602 300 300 2419200 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0