mx.aqua-toropical-beach.com has no CNAME records.
Question and response
Question
dig mx.aqua-toropical-beach.com. NS
Answer
The response has no answer records.
Authority
aqua-toropical-beach.com. 3600 SOA dns.aqua-toropical-beach.com. hostmaster.aqua-toropical-beach.com. 1562775367 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0