linux – DNS resolving the waiting time

I have a DNS server configured in Linux Centos 7, and when integrating with Windows Server 2012 R2 only solves in an inverse way, that is, with its IP address, when I try to directly resolve the server it takes a long time to respond, I do not know the reason why I had this problem, I thought it was a firewalld, but I deactivated it both in Windows and Linux, but the problem remains the same.

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