mail.MY-IHOR.RU has no MX records.
Question and response
Question
dig mail.MY-IHOR.RU. MX
Answer
The response has no answer records.
Authority
MY-IHOR.RU. 3600 SOA ns1.ihordns.net. tech.ihordns.net. 2020085671 3600 3600 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0