n2.intodomain.net has no MX records.
Question and response
Question
dig n2.intodomain.net. MX
Answer
The response has no answer records.
Authority
intodomain.net. 7200 SOA ns10.hostdominicano.com. dominio.grupo.host. 2025050704 7200 7200 172800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0