Configuring an Exchange Server includes the following:  
Obtaining a domain name for your business (if you do not already own one).  To make sure email is properly routed to your Exchange Server PCM will have to do configuration on DNS servers.  PCM will setup the users of your company with mailboxes, so they can send and receive email through their email client software.  PCM can secure your Exchange server environment through using SPAM filtering technologies and Antivirus technologies.  PCM can also configure Exchange, so email can be accessible over the Web and also from your Mobile Device.