mail.tecnologiasplexus.com has no CNAME records.
Question and response
Question
dig mail.tecnologiasplexus.com. NS
Answer
The response has no answer records.
Authority
tecnologiasplexus.com. 1510 SOA isp-01.plexus.es. jmsende.plexus.es. 2025112502 7200 540 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0