mail.rcpod.space has no NS records.
NS records for this zone are defined at rcpod.space.
NS records for this zone are defined at rcpod.space.
Question and response
Question
dig mail.rcpod.space. NS
Answer
The response has no answer records.
Authority
rcpod.space. 10800 SOA ns1.reg.ru. hostmaster.ns1.reg.ru. 1771389292 14400 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0