SBS2003 Small Business Server
Designed with your business needs in mind, Windows Small Business Server 2003 (SBS 2003) is a complete and affordable network solution. 
SBS 2003 keeps your data secure while maximizing your employee productivity and enhancing your customer communications.
Components of Small Business Server
Small Business Server provides, in addition to the server platform, Microsoft Exchange 2003 providing your email internally and externally via Outlook Web Access.
SBS2003 Editions
SBS2003 is available in two editions, the Standard Edition and the Premium Edition. 
With the Premium edition you have the additional component of the superb ISA Server providing first class firewall protection and the full SQL 2005 server.