legacyssl.uxmailtest.io has no CNAME records.
Question and response
Question
dig legacyssl.uxmailtest.io. NS
Answer
The response has no answer records.
Authority
uxmailtest.io. 900 SOA pns31.cloudns.net. hostmaster.ubivox.com. 2025070203 14400 7200 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0