Step 2: Configure DNS for Your Standard Edition Server
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
When you deploy a Standard Edition Server, Setup creates Active Directory objects and settings for the server, including the server FQDN. For clients to be able to connect to the server, this server FQDN must be registered in the Domain Name Service (DNS).
In addition, for clients to automatically detect a pool or Standard Edition Server on which a user is hosted, you must designate a Standard Edition Server or a pool in your internal Office Communications Server infrastructure to authenticate and distribute incoming client sign-in requests.
This section describes the DNS records that you are required to configure in all Office Communications Server deployments and those required for automatic client sign-in.
Required DNS Records
At a minimum, you are required to configure the following DNS record for all Standard Edition Server deployments:
An internal DNS A record that resolves the FQDN of your Standard Edition Server.
If you plan to support Web conferencing for external users, an external DNS A record that resolves the external Web farm FQDN to the external IP address of the reverse proxy. The client uses this record to connect to the reverse proxy. (as described in the Microsoft Office Communications Server 2007 Edge Server Deployment Guide).