Domain Name Not Pinging

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Domain Name Not Pinging. If this is successful then either the address you are using for the domain name server is incorrect or it is unreachable or down. If I type ping examplehostnamepubmydomainxx the dns resolve the name.

Why Does Public Domain Resolve To 127 0 0 1 Infosecaddicts
Why Does Public Domain Resolve To 127 0 0 1 Infosecaddicts from infosecaddicts.com

Then tried to ping with hostname of machine A. Network Security Group NSG configuration. The problem I have when I try to ping examplehostnamepub.

Logged into machine B.

Any help idea inputs on this. Below is the output from A machine. The dns function correctly paste the suffix and resolve the nome to ip address. I am not sure why the server stopped pinging just with server name.