mx20.reviced.com has no CNAME records.
Question and response
Question
dig mx20.reviced.com. NS
Answer
The response has no answer records.
Authority
reviced.com. 1236 SOA ns1.reviced.com. support.reviced.com. 2024062001 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0