Domain Name System Error. This error message can be displayed in three different formats. A FAILED System Domain Name is not configured message is displayed on a printed e-mail confirmation page.
The Domain Name System DNS is a hierarchical and decentralized naming system for computers services or other resources connected to the Internet or a private network. 2 Click on the Internet Protocol TCPIP item to select it and click the Properties button. You must edit the hosts file to eliminate hostnames and IP addresses that are stored there.
DNS name does not exist.
When trying to join the Windows Server 2008 R2 machine to the domain by specifying the fully qualified domain name FQDN in the domain join UI the operation fails and you receive the error. When you type the domain name make sure that you type the DNS name and not the NetBIOS name. This error message can be displayed in three different formats. This problem only for incoming from external doamin internal incoming and outgoing fine and external outgoing fine.