mail.kiwioi812.com has no MX records.
Question and response
Question
dig mail.kiwioi812.com. MX
Answer
The response has no answer records.
Authority
kiwioi812.com. 300 SOA ns1.name.com. hostmaster.nsone.net. 1638859192 7200 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0