en1.psmail-uno.ru has no MX records.
Question and response
Question
dig en1.psmail-uno.ru. MX
Answer
The response has no answer records.
Authority
psmail-uno.ru. 172800 SOA ns1.he.net. hostmaster.he.net. 2022091500 86400 7200 3600000 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0