You've installed Exchange Server 2007, but what do you do next? You still need to configure your servers. Fortunately, the Exchange Server 2007 Finalize Deployment page in Exchange Management Console walks you through the tasks you need to perform. Here are the steps you might still need to take:
Step 1: Complete Tasks that Apply to All Servers
You need to enter a product key, though Microsoft gives you a 120-day grace period to do so. You should also run Exchanger Server Best Practices Analyzer (ExBPA) to help you optimize performance and security.
Step 2: Configure the Mailbox Server
You need to configure Offline Address Book (OAB) distribution for Microsoft Office Outlook 2007 clients. For clients running Microsoft Office Outlook 2003 and earlier, you need to create a public folder to host the OAB.
Step 3: Configure the Client Access Server
Two tasks might be necessary to configure your Client Access server. First, you need to configure Secure Sockets Layer (SSL) encryption for Microsoft Outlook Web Access (OWA) client connections to the Client Access server. Second, you need to configure Exchange ActiveSync (EAS) if some of your users send and receive email from mobile devices.
Step 4: Configure the Hub Transport Server
Your Exchange server will be configured automatically to accept mail for your forest root domain, but you might need to configure it to accept mail from external SMTP domains as well. If you're using an Edge Transport server, you need to set up an Edge Transport subscription. Also, you need to make sure you've configured a mailbox to act as the postmaster.