We all have lot of fun these days with Microsoft patches.
KB4057903 released in January 2018 and deployed to Windows Server 2012 R2 caused not only unresponsive exchange service, but also changed the configuration of DNS Server. After KB deployment, DNS server listen on all IP adapters…
It seems, that this KB was pulled down and is not publicly available anymore.
Fix:
- Open DNS Manager (dnsmgmt.msc)
- Choose the DNS server, right click on it and select Properties
- Interfaces tab – Select only Production IP