mailer.reborncf.com has no NS records.
NS records for this zone are defined at reborncf.com.
NS records for this zone are defined at reborncf.com.
Question and response
Question
dig mailer.reborncf.com. NS
Answer
The response has no answer records.
Authority
reborncf.com. 1800 SOA sneh.ns.cloudflare.com. dns.cloudflare.com. 2398166602 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0