ns2.ihc.RU has no MX records.
Question and response
Question
dig ns2.ihc.RU. MX
Answer
The response has no answer records.
Authority
ihc.RU. 600 SOA ns1.ihc.RU. support.ihc.RU. 2010083101 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0