dns.bizcn.com has no MX records.
Question and response
Question
dig dns.bizcn.com. MX
Answer
The response has no answer records.
Authority
bizcn.com. 600 SOA dns.bizcn.com. abuse.bizcn.com. 1369 28800 14400 14400 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0