mail.sbarailai.com has no NS records.
NS records for this zone are defined at sbarailai.com.
NS records for this zone are defined at sbarailai.com.
Question and response
Question
dig mail.sbarailai.com. NS
Answer
The response has no answer records.
Authority
sbarailai.com. 1800 SOA danica.ns.cloudflare.com. dns.cloudflare.com. 2394600246 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0