smtp1.email.me-dcc-doha-1.ocs.oraclecloud21.com has no NS records.
NS records for this zone are defined at me-dcc-doha-1.ocs.oraclecloud21.com.
NS records for this zone are defined at me-dcc-doha-1.ocs.oraclecloud21.com.
Question and response
Question
dig smtp1.email.me-dcc-doha-1.ocs.oraclecloud21.com. NS
Answer
The response has no answer records.
Authority
me-dcc-doha-1.ocs.oraclecloud21.com. 300 SOA ns1.p200.dns.me-dcc-doha-1.oci.oraclerealm1.com. hostmaster.me-dcc-doha-1.ocs.oraclecloud21.com. 525 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0