test-mail02.w-ha.com has no CNAME records.
Question and response
Question
dig test-mail02.w-ha.com. NS
Answer
The response has no answer records.
Authority
w-ha.com. 3600 SOA ns1.lerelaisinternet.com. root.nordnet.fr. 2025120501 14400 7200 3456789 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0