Hardware
Intel Pentium 4 processor (1 GHz or faster) with the following:

• 512 MB (or higher) RAM
• At least 20 GB of hard disk space (unless otherwise specified)

Software
Microsoft Windows Server 2003 R2 operating system (Standard or Enterprise edition). It is recommended that the operating system be freshly installed using default settings.
Microsoft Exchange 2003 Systems Management Tools Service Pack 2 (SP2)
The following Microsoft Windows components (installed and enabled):

• IIS
• .NET 2.0 framework
• ASP.NET
• SMTP
• NNTP