servermail.bpdigital.com.br has no NS records.
NS records for this zone are defined at bpdigital.com.br.
NS records for this zone are defined at bpdigital.com.br.
Question and response
Question
dig servermail.bpdigital.com.br. NS
Answer
The response has no answer records.
Authority
bpdigital.com.br. 1800 SOA kim.ns.cloudflare.com. dns.cloudflare.com. 2396855477 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0