mx.EVO73.RU has no CNAME records.
Question and response
Question
dig mx.EVO73.RU. NS
Answer
The response has no answer records.
Authority
evo73.ru. 3600 SOA ns.evolife.su. root.evolife.su. 2025120415 3600 1800 608400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0