mail01.redeunifique.com.br has no NS records.
NS records for this zone are defined at redeunifique.com.br.
NS records for this zone are defined at redeunifique.com.br.
Question and response
Question
dig mail01.redeunifique.com.br. NS
Answer
The response has no answer records.
Authority
redeunifique.com.br. 1800 SOA jule.ns.cloudflare.com. dns.cloudflare.com. 2398649028 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0