mail.lla-management.com has no CNAME records.
Question and response
Question
dig mail.lla-management.com. NS
Answer
The response has no answer records.
Authority
lla-management.com. 10800 SOA ns1.alldomains.hosting. support.alldomains.hosting. 2023040201 10800 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0