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Check downloads for viruses, filter spam and trap inbound or outbound messages with inappropriate keywords-e-mail administrators would love to have these features. Yet they aren't always present on popular e-mail servers, such as Microsoft's Exchange, Lotus's Notes or Isocor's N-Plex.
GFI Fax & Voice's Mail Essentials version 3 offers an interesting option: Set up an intermediary POP3/SMTP gateway between the enterprise e-mail server and its host gateway. This server can examine all incoming and outgoing mail according to an administrator's preferences.
Mail Essentials requires a fairly minimal platform: a 200-MHz Pentium-based Windows NT Server or Workstation with 64 MB of RAM. We chose a slightly more robust server, an IBM Netfinity 5500 with dual 450-MHz Pentium II Xeon processors and 256 MB of RAM. We used Stalker Software's e-mail server CommuniGate Pro,...