ns3.gohost.ru has no MX records.
Question and response
Question
dig ns3.gohost.ru. MX
Answer
The response has no answer records.
Authority
gohost.ru. 7200 SOA ns1.nameself.com. support.regtime.net. 1766987644 300 300 604800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0