m2.cch.email has no CNAME records.
Question and response
Question
dig m2.cch.email. NS
Answer
The response has no answer records.
Authority
cch.email. 3441 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1747211412 43200 3600 604800 3601
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0