ns3.dialhost.com.br has no MX records.
Question and response
Question
dig ns3.dialhost.com.br. MX
Answer
The response has no answer records.
Authority
ns3.dialhost.com.br. 86400 SOA ns1.dialhost.com.br. alerta.dialhost.com.br. 2024021501 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0