ns4.salenames.ru has no MX records.
Question and response
Question
dig ns4.salenames.ru. MX
Answer
The response has no answer records.
Authority
salenames.ru. 600 SOA ns1.r01.ru. noc.parkline.ru. 2025051200 10800 1800 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0