ns.EGS63.RU has no MX records.
Question and response
Question
dig ns.EGS63.RU. MX
Answer
The response has no answer records.
Authority
egs63.ru. 3600 SOA ns.egs63.ru. root.ns.egs63.ru. 2022072701 3600 900 1814400 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0