nomail.thera.it has no CNAME records.
Question and response
Question
dig nomail.thera.it. NS
Answer
The response has no answer records.
Authority
thera.it. 1467 SOA ns1mi.infracom.it. sistemi.infracom.it. 2022071401 86400 7200 3628800 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0