Bjbcmesmtp01.chinacloudapi.cn has no NS records.
NS records for this zone are defined at chinacloudapi.cn.
NS records for this zone are defined at chinacloudapi.cn.
Question and response
Question
dig Bjbcmesmtp01.chinacloudapi.cn. NS
Answer
The response has no answer records.
Authority
chinacloudapi.cn. 300 SOA ns1-201.azure-dns-3.cn. hostmaster.windowsazure.cn. 2013051832 1800 900 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0