mxemerg1.zucchetti.com has no CNAME records.
Question and response
Question
dig mxemerg1.zucchetti.com. NS
Answer
The response has no answer records.
Authority
zucchetti.com. 626 SOA ns1.zucchetti.com. hostmaster.zucchetti.com. 2024062356 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0