mx.butternbread.store has no NS records.
NS records for this zone are defined at butternbread.store.
NS records for this zone are defined at butternbread.store.
Question and response
Question
dig mx.butternbread.store. NS
Answer
The response has no answer records.
Authority
butternbread.store. 3600 SOA dns.butternbread.store. hostmaster.butternbread.store. 1129144557 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0