eWall 4.0 is released as a simple yet effective Microsoft Windows based gateway between the Internet and your mail server. It monitors the SMTP traffic in real-time, catching the majority of spam and viruses. The chain of flexible filters stops more than 95% of unwanted emails out of the box (more than 99% with Message Sniffer), dropping the mail server load by more than 90%. eWall doesn't require maintenance and includes optional self-updating components (ClamAV, Message Sniffer), that seamlessly work with and protect your mail environment from spam and viruses 24 hours a day, 7 days a week.

Major Features:

1. General:
   • Works with any mail server
   • • The SMTP service is the primary component of any mail server, and this is eWall's domain against the web threats and where it operates. That's why eWall works with any mail server.
   • Technologies
   • • PHP + PostgreSQL + XML-RPC. This formula briefly outlines eWall's internals. As you can see, eWall is built upon reliable, time-proven technologies.
   • Fast multi-threaded service
   • • eWall installs and runs as a high-performance Windows service.
   • Turnkey solution
   • • eWall is ready to use out-of-the-box. The set of pre-defined filters start fighting SPAM and viruses immediately after installation. Only minimal, optional, configuration may be needed.
   • Zero maintenance
   • • At pre-defined intervals, eWall deletes the old database records, quarantined emails and compresses the log files.
   • Self-updating
   • • The installed components, such as ClamAV and Message Sniffer are pre-configured to automatically download and install any updates.
   • Quarantine
   • • eWall has a Quarantine for filtered emails, which can be reviewed and appropriate messages forwarded on to the recipients.
   • Remote Control Panel
   • • The eWall Remote Control Panel can be installed anywhere, and allows you to manage the eWall service itself, configure filters, and view the stats and logs in real time. Communications between eWall and the Remote Control Panel uses the XML-RPC channel, which transparent to regular firewalls. As a bonus, it includes a cool, animated dashboard, demonstrating the filtering process in pseudo-3D graphics.
   • Counterattack
   • • eWall is also able to counter spammers with the tarpitting feature, wasting THEIR resources, with minimal resource consumption on your side.
   • Doesn't depend on .NET
   • • ... or any other framework. All necessary libraries are included in the installer.
2. Anti-Spam:
   • DNSBL, SURBL, SPF, Greylisting, Anti-phishing, Greeting delay,
   • Harvester detection, Country blocking
   • • All those popular anti-spam techniques are available in eWall by default. If that's not enough, eWall's open API architecture allows you to develop and add new filters quickly.
   • Message Sniffer
   • • eWall supports the popular Message Sniffer engine — very fast and accurate commercial content scanner, developed by ARM Research Labs. The Message Sniffer has a high-performance multi-threaded core, which makes it suitable even for large ISP's.
   • Spam Assassin
   • • Support for most popular, open-sourced spam filter, Spam Assassin is also included (SpamD).
3. Anti-Virus:
   • AVG 2011, Avast 5, F-PROT 6
   • • The support for these popular antiviruses is already included in Repository, and virtually any other command-line antivirus can be plugged in. Just request.
   • ClamAV
   • • As an option, eWall can install the popular, open source antivirus, ClamAV.
   • Attachment filtering
   • • By default, eWall enables the filters, stripping out the potentially dangerous attachments, even in packed archives.
   • Command-line scanners
   • • Virtually any command-line antivirus scanner can be used with eWall.
4. Unique:
   • SSL support
   • • SSL listeners can be created to establish encrypted communications between eWall and mail sender.
   • Truly transparent
   • • Unlike other mail proxies on the market, eWall can be truly transparent. Using the unique program EWLSP, included with eWall, the sender IP is not overwritten by eWall and is still available for use directly by the mail server, making all IP-based features on the email server available! (read more).
     • Open API
     • All eWall filters are open-source PHP scripts, that can be modified using the internal code editor or, for example, an external editor such as Notepad. This allows you to quickly develop complex and flexible filters, and share them with other eWall users.
   • Filters Repository
   • • The pre-defined filters are stored in their own Repository, that represent a distributable XML file, open for editing and new filters.

Enhancements:

• Adds SSL support, ClamAV and SpamAssassin (SpamD) clients, built-in PHP engine, built-in Message Sniffer engine, remote control panel, animated dashboard, filters repository.