mail01.enlacevision.com has no CNAME records.
Question and response
Question
dig mail01.enlacevision.com. NS
Answer
The response has no answer records.
Authority
enlacevision.com. 9274 SOA ns1.cablecolor.hn. admin.cablecolor.hn. 2025070502 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0