mxau1.australiaeast.cloudapp.azure.com has no NS records.
NS records for this zone are defined at australiaeast.cloudapp.azure.com.
NS records for this zone are defined at australiaeast.cloudapp.azure.com.
Question and response
Question
dig mxau1.australiaeast.cloudapp.azure.com. NS
Answer
The response has no answer records.
Authority
australiaeast.cloudapp.azure.com. 60 SOA ns1-06.azure-dns.com. msnhst.microsoft.com. 10001 900 300 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0