Exchange Server 2007 helps you manage a reliable messaging system with built-in protection against spam and viruses, while providing people throughout your organization with anywhere access to e-mail, voicemail, calendars, and contacts from a wide variety of devices.
Exchange Server 2007 (previously code-named Exchange “12”) offers a security-enhanced and reliable enterprise messaging platform for e-mail and calendaring, while delivering innovative messaging capabilities.
Microsoft Forefront is a comprehensive line of business security products providing greater protection and control through integration with your existing IT infrastructure and through simplified deployment, management, and analysis.
Exchange Server 2003 Service Pack 2 (SP2) adds improved mobile e-mail capabilities, larger storage in Standard Edition, better protection from spam, enhanced security, advanced mailbox fundamentals, and more.