grupoloading.com has no MX records.
Question and response
Question
dig grupoloading.com. MX
Answer
The response has no answer records.
Authority
grupoloading.com. 3600 SOA ns1.grupoloading.com. servidores.loading.es. 2019042401 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0