smtp.SENDSAY.RU has no NS records.
NS records for this zone are defined at SENDSAY.RU.
NS records for this zone are defined at SENDSAY.RU.
Question and response
Question
dig smtp.SENDSAY.RU. NS
Answer
The response has no answer records.
Authority
SENDSAY.RU. 600 SOA ns.iprojects.RU. noc.iprojects.RU. 2023051523 10800 1100 864000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0