webmail.adaptlink.com.br has no NS records.
NS records for this zone are defined at adaptlink.com.br.
NS records for this zone are defined at adaptlink.com.br.
Question and response
Question
dig ghs.google.com. NS
Answer
The response has no answer records.
Authority
google.com. 60 SOA ns1.google.com. dns-admin.google.com. 879543655 900 900 1800 60
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0