dns3.grupohost.net has no MX records.
Question and response
Question
dig dns3.grupohost.net. MX
Answer
The response has no answer records.
Authority
grupohost.net. 7200 SOA ns13.hostdominicano.com. dominio.host.do. 2025050710 7200 7200 172800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0