How to set up an Internal SMTP Service for Windows Server 2012 Essentials Windows Server 2012 Essentials does not come with Microsoft Exchange Server as its predecessor Small Business Server 2011 did. However, many small businesses still use a copier or multifunction device that has the ability to scan to email. Some units also allow a fax to email forwarding service. Unfortunately, many of these devices rely on some form of internal SMTP service to enable them to relay emails to recipients. Fortunately, you can enable a SMTP service that is built into the core operating system for Windows Server 2012. Here how to do this. Install the SMTP Service Launch the Server Manager. From the Search charm, type in Server Manager to find it. From the Dashboard, Add Roles and Features. The Add Roles and Features Wizard will begin. Click Next on the first screen. Select Role-based or feature-based installation. Select the Essentials S...