ns3.it-lite.ru has no MX records.
Question and response
Question
dig ns3.it-lite.ru. MX
Answer
The response has no answer records.
Authority
it-lite.ru. 900 SOA ns1.it-lite.ru. support.it-lite.ru. 2010113062 7200 3600 604800 900
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0