Primary DNS Suffix is missing
Applies to: Exchange Server 2013
Microsoft Exchange Server 2013 Setup can't continue because the primary domain name system (DNS) suffix for the computer you're installing Exchange on hasn't been configured.
To resolve this issue, add a primary DNS suffix on the computer using the steps below and then run Setup again.
Changing the computer name or primary DNS suffix after you install Exchange 2013 isn't supported.
Log on to the computer where you want to install the Edge Transport role as a user that's a member of the local Administrators group.
Open the Control Panel and then double-click System.
In the Computer name, domain, and workgroup settings section, click Change settings.
In the System Properties window, make sure the Computer Name tab is selected and then click Change....
In Computer Name/Domain Changes, click More....
In Primary DNS suffix of this computer, enter the DNS domain name for the Edge Transport server. For example, contoso.com.
Click OK to close each window.
Having problems? Ask for help in the Exchange forums. Visit the forums at Exchange Server.
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