ns1.brava.inf.br has no MX records.
Question and response
Question
dig ns1.brava.inf.br. MX
Answer
The response has no answer records.
Authority
brava.inf.br. 3600 SOA ns1.brava.inf.br. root.brava.inf.br. 2026012763 4800 3600 1209600 6000
Additional
The response has no additional records.