Email Security - Anti-Spam Filter

By: Nospamtoday  11-11-2011
Keywords: filter, Spam, Mail Server

CleanMail Server protects Microsoft Exchange, IMail, Lotus Domino/Notes and any other mail server against all kinds of junk mail containing spam, viruses and phishing attacks. CleanMail Home can be used with any POP3 email client software to protect a single computer.

CleanMail was designed to make the integration into existing e-mail environments simple and straight-forward. This is achieved by implementing the antispam filtering engine as a transparent SMTP/POP3 proxy server. CleanMail allows you to configure an unlimited number of SMTP or POP3 proxy ports (full multi-domain support). It can be installed on your existing mail server and does not require additional hardware.

CleanMail provides a lot of different Mail Filtering Policies, which enables each customer to configure it exactly according to their respective corporate policies.

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CleanMail comes with a complete one stop setup that installs one of the world's most advanced and thorough anti-spam & anti-virus filters on your server in a matter of minutes. It has an easy-to-use administration wizard.

Have a look at some sample screenshots of

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CleanMail already provides a lot of different built-in mail filters to perform all kinds of checks and processing of incoming e-mails.

Attachment Filter

CleanMail not only protects you against spam, virus and phishing mails, it also provides a built-in attachment blocker to filter out all kinds of malicious attachments.

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Anti-Virus Filter

Cleanmail already includes ClamWin Anti-Virus and additionally provides built-in support for all popular virus checkers to protect you against virus attacks.

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Delay Filter

CleanMail Server can be configured to use a built-in delay filter to stop spammers from delivering junk mails to your server. Tests have shown that the Delay Filter itself already blocks up to 73% of all junk mails while causing only minimal resource usage on the host system. The effect of delay filtering is comparable to greylisting, but delay filtering of course avoids the common drawbacks of greylisting.

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SpamAssassin Filter

CleanMail integrates the award-winning SpamAssassin™, one of the world's most advanced spam filtering engines to protect you against spam mails. It uses a lot of advanced spam detection techniques including

  • Keyword Checking and Text Analysis
  • Bayesian Spam Filtering
  • Realtime DNS Blacklist (DNSBL, RBL) Checking
  • Multiple SURBL (Spam URI Realtime Blocklist) Checking
  • SPF (Sender Policy Framework) Support
  • Automatic Whitelist Management
  • White and Black Lists

and many others more. Read more about

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SpamTrap Filter

The SpamTrap filter automatically keeps the SpamAssassin filter up-to-date by training a Bayes database with incoming spam mails.

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CleanMail also protects your mail server against Directory Harvesting Attacks.

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CleanMail prevents that your SMTP server becomes an open relay.

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CleanMail also offers protection against mail flooding caused e.g by non-delivery reports.

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CleanMail's Mail Storage filter can be used to automatically archive all inbound and outbound mails directly on the server without any user interaction.

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The extensive reporting, statistics and logging facilities of CleanMail provide the system administrator with up-to-date status information of all kinds including realtime charts as well as statistical data.

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CleanMail User Manual

Exceptional Value at Reasonable Prices

Keywords: filter, Mail Filtering, Mail Server, Spam, Spam Filtering,

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