brsmtp.takecontrol.com.br has no NS records.
NS records for this zone are defined at takecontrol.com.br.
NS records for this zone are defined at takecontrol.com.br.
Question and response
Question
dig brsmtp.takecontrol.com.br. NS
Answer
The response has no answer records.
Authority
takecontrol.com.br. 300 SOA ns1.bdm.microsoftonline.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0