mail1.namebrightmail.com has no NS records.
NS records for this zone are defined at namebrightmail.com.
NS records for this zone are defined at namebrightmail.com.
Question and response
Question
dig mail1.namebrightmail.com. NS
Answer
The response has no answer records.
Authority
namebrightmail.com. 1800 SOA chuck.ns.cloudflare.com. dns.cloudflare.com. 2397946898 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0