brsmtp-out2.orange.pl has no NS records.
NS records for this zone are defined at orange.pl.
NS records for this zone are defined at orange.pl.
Question and response
Question
dig brsmtp-out2.orange.pl. NS
Answer
The response has no answer records.
Authority
orange.pl. 86400 SOA ns1.corpnet.pl. dns-pl.orange.com. 2026030602 172800 21600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0