172.93.40.217.16clouds.com has no MX records.
Question and response
Question
dig 172.93.40.217.16clouds.com. MX
Answer
The response has no answer records.
Authority
172.93.40.217.16clouds.com. 43200 SOA ns1.16clouds.com. mail.localhost. 2026022801 43200 7200 1800000 43200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0