mail.ict-24cloud.com has no CNAME records.
Question and response
Question
dig mail.ict-24cloud.com. NS
Answer
The response has no answer records.
Authority
ict-24cloud.com. 492 SOA ns.ict-24cloud.com. root.ict-24cloud.com. 2025111201 28800 7200 2419200 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0