Mxtreme Mail Firewall MX-400
BorderWare Technologies Inc.
It has a comprehensive range of mail filtering options.
The default settings are not very effective.
A good choice provided that you have the time to tune it to get the best results.
This device features an Intel Pentium 4 processor with 512MB of memory, 40020 Megabytes of RAID 1 disk storage and three Gigabit Ethernet connections, all in a standard 1U rack-mountable case.
Initial configuration, which sets up the IP address and time zone details, requires connection to a keyboard and monitor. Once this is done, the rest of the set-up process is carried out using a web browser over an SSL connection.
The system has a number of anti-spam features that include source and content filtering and attachment blocking. It can also make use of the Distributed Checksum Clearinghouse and can apply Statistical Token Analysis techniques to message contents.
It can also use Symantec's Brightmail system, and while this didn't do well in our tests, if used with the other facilities, it should eliminate almost all unwanted mail.
The system can be set up to reject malformed email messages, to deter DoS attacks on the server.
Mail attachments are processed in various ways, so administrators can determine how to handle various types. The system can interface with a range of popular email clients and also provides its own BorderPost system, which uses a web browser as its client.
Administrative functions include an archiving feature that allows copies of all processed messages to be sent to a specified address for storage. The reporting system can provide status details and traffic statistics as well as detailed data about the processing applied to messages. Report generation allows the administrator to set up and produce customized reports to analyze items of interest, such as which accounts receive the most mail and where from.