mta07.spf.ensend.ru has no NS records.
NS records for this zone are defined at ensend.ru.
NS records for this zone are defined at ensend.ru.
Question and response
Question
dig mta07.spf.ensend.ru. NS
Answer
The response has no answer records.
Authority
ensend.ru. 60 SOA a.ns.selectel.ru. support.selectel.ru. 2026021303 10800 3600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0