mx2.dns.business has no CNAME records.
Question and response
Question
dig mx2.dns.business. NS
Answer
The response has no answer records.
Authority
dns.business. 600 SOA ns1.dns.business. support.dns.business. 2025022052 21600 3600 2160000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0