webmail.etapa.net.ec has no CNAME records.
Question and response
Question
dig webmail.etapa.net.ec. NS
Answer
The response has no answer records.
Authority
etapa.net.ec. 1800 SOA alina.ns.cloudflare.com. dns.cloudflare.com. 2398160813 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0