source: http://reviews.cnet.com/Microsoft_Small_Business_Server_2003/4505-3672_7-3055...
clipped by ClipClipTeam-Sudhakar Mar 09, 2006
The good: Comprehensive feature set; tight integration with Exchange and SharePoint portal services; wizards and task lists simplify setup and ongoing maintenance; competitively priced.
The bad: Still not quite DIY simple; no server-side antivirus or spam filtering; firewall in Standard Edition is limited.
The bottom line: For small businesses that need a business in a box and want to stick with Microsoft technology, SBS 2003 is the only game in town.
Read CNET's review of the Microsoft Small Business Server 2003