- Windows 2000 - Pro, Server or Advanced Server OR Windows 2003 - Pro, Server or Advanced Server OR Windows XP (Note that if you use Windows 2000 Pro or XP, you will only be able to accept up to 10 inbound SMTP connections simultaneously, so its better to use Windows server versions)
- Microsoft Exchange server 2003, 2000, 4, 5 or 5.5, Lotus Notes 4.5 and up, or an SMTP/POP3 mail server.
- IMPORTANT: Disable Anti Virus software from scanning the GFI MailSecurity & IIS directories! AV products are known to both interfere with normal operation as well as slow down any software which requires file access. For more information: http://kbase.gfi.com/showarticle.asp?id=KBID001559
- Make sure that backup software is not backing up any of the GFI MailSecurity directories at any point.
