mx1.systemar.com.br has no NS records.
NS records for this zone are defined at systemar.com.br.
NS records for this zone are defined at systemar.com.br.
Question and response
Question
dig mx1.systemar.com.br. NS
Answer
The response has no answer records.
Authority
systemar.com.br. 3600 SOA ns1.systemar.com.br. eliel.systemar.com.br. 2024052810 3600 900 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0