System requirements

To install GFI MailSecurity you need:

•	Windows Server 2003 Standard/Enterprise (x32 or x64 Edition) or Windows 2000 Professional/Server/Advanced Server (Service Pack 1 or higher) or Windows XP

NOTE: Since the version of Internet Information Services (IIS) included in Windows XP is limited to serving only 10 simultaneous client connections, installing GFI MailSecurity on a machine running Windows XP could affect its performance.

•	Microsoft Exchange Server 2007, 2003, 2000 (SP1), 5.5, 5, 4, or Lotus Notes 4.5 and up, or any SMTP/POP3 mail server

NOTE 1: If you are installing on Microsoft Exchange Server 2007, you need to have either Mailbox Server Role and Hub Transport Server Role installed or Hub Transport Server Role installed. GFI MailSecurity cannot be installed on a Microsoft Exchange 2007 machine with only Mailbox Server Role installed.

NOTE 2: When using Small Business Server, ensure you have installed Service Pack 2 for Exchange Server 2000 and Service Pack 1 for Exchange Server 2003.

•	Microsoft .Net framework 1.1 / 2.0

•	MSMQ – Microsoft Messaging Queuing Service

•	Internet Information Services (IIS) (x32 or x64 Edition) – SMTP service and World Wide Web service

NOTE: If installing on a Microsoft Exchange 2007 machine, the IIS SMTP service is not required, since it has its own built in SMTP server.

•	Microsoft Data Access Components (MDAC) 2.8

IMPORTANT: Disable anti-virus software from scanning the GFI MailSecurity directories. Anti-virus products are known to both interfere with normal operation as well as slow down any software that requires file access. In fact, Microsoft does not recommend running file-based anti-virus software on the mail server. For more information, please refer to http://kbase.gfi.com/showarticle.asp?id=KBID001559.

IMPORTANT: GFI MailSecurity directories should never be backed up using backup software.