luotianyi.us has no MX records.
Question and response
Question
dig luotianyi.us. MX
Answer
The response has no answer records.
Authority
luotianyi.us. 900 SOA copy.ns.luotianyi.us. nameserver.v3tianyi.com. 2021659095 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0