ns1.metainfo.com has no MX records.
Question and response
Question
dig ns1.metainfo.com. MX
Answer
The response has no answer records.
Authority
metainfo.com. 86400 SOA ns1.metainfo.com. nothingto\.seehere.metainfo.com. 2014075189 86400 86400 86400 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0