mun.zori.ru has no MX records.
Question and response
Question
dig mun.zori.ru. MX
Answer
The response has no answer records.
Authority
zori.ru. 7200 SOA ns1.he.net. hostmaster.he.net. 2025052300 2400 360 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0