mail.latam-hosting.com has no CNAME records.
Question and response
Question
dig mail.latam-hosting.com. NS
Answer
The response has no answer records.
Authority
latam-hosting.com. 9929 SOA ns1.latam-hosting.com. root.srv1.latam-hosting.com. 2026010501 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0