repo.miran.tech has no MX records.
Question and response
Question
dig repo.miran.tech. MX
Answer
The response has no answer records.
Authority
miran.tech. 3600 SOA ns.miran.ru. adm.miran.ru. 2020081699 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0