mail.barbuchu.com has no NS records.
NS records for this zone are defined at barbuchu.com.
NS records for this zone are defined at barbuchu.com.
Question and response
Question
dig mail.barbuchu.com. NS
Answer
The response has no answer records.
Authority
barbuchu.com. 600 SOA ns1.la-boite.com. admin.la-boite.com. 2026020303 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0