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Spam (unsolicited commercial e-mail) accounts for 35% of all
messages and is rapidly increasing. 1 in 150 messages contains a
virus, costing many billions of dollars around the world every year.
Surveys have shown that removing 1 virus from 1 PC costs over $600.
Removing a virus infection from a server costs over $50,000.
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At Quality Host Online, we take this very seriously.
Therefore we use the latest AntiVirus and AntiSpam filters on our servers. The filtering service consists of MailScanner, SpamAssassin, ClamAV,
DCC, Vipuls Razor, SARE and Dictionary Attack ACL.
Each email is checked by this filtering service which determines if
the email is from a known spam source and if it contains any known
viruses. The service gets information from many spam detecting and
filtering networks so it can perform reliably. We catch around 95% of all
incoming spam and over 98% of all viruses.
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MailScanner is already a highly-respected open source e-mail
security system, with more users than AOL and Hotmail combined, and
this new release increases its stability and performance. It
processes 500 million e-mail messages every day, removing 2 million
viruses and identifying 75 million spam messages. MailScanner is
used at 20,000 sites around the world protecting top government
departments, commercial corporations and educational institutions.
It is becoming a standard feature of many ISP's as virus protection
and spam filtering are now essential requirements for most users.
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Automatically updates all installed
virus scanners every hour |
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Identifies over
95% of spam using several techniques, including
highly advanced heuristics |
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Pornographic spam
is stripped of all graphical content, protecting
users from obscene content |
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Scans e-mail for
viruses using any combination of up to 14 different
virus scanners
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Clam Antivirus
is a GPL anti-virus toolkit for UNIX. The main purpose
of this software is the integration with mail servers
(attachment scanning). The package provides a flexible
and scalable multi-threaded daemon, a command line
scanner, and a tool for automatic updating via Internet.
The programs are based on a shared library distributed
with the Clam AntiVirus package, which you can use with
your own software. Most importantly, the virus database
is kept up to date.
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Command-line Scanner |
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Fast, Multi-threaded Daemon |
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Milter interface for sendmail |
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Database updater with support
for digital signatures
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Virus scanner C library |
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On-access scanning |
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Detection of over 20000
viruses, worms and trojans |
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Built-in support for RAR (2.0),
Zip, Gzip, Bzip2 |
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Built-in support for Mbox,
Maildir and raw mail files
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Arguably the most popular of the free spam detectors out
there is SpamAssassin, and for good reason: it's
not just free, it's among the most effective
spam-fighting tools available for any platform. It
offers all of the best of breed spam-fighting techniques
in one nice, neat package: a feature recognizer, DNSBL
and SPF lookups, collaborative reporting networks, and
Bayesian filtering. On top of that, Spam Assassin
includes a comprehensive scoring framework that takes
all of these tests into account before making a
diagnosis, rather than just making a quick decision
based on a single test (a technique that's terribly
prone to error). |
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SpamAssassin is a mail filter to identify spam.
It is an intelligent email filter which uses a diverse
range of tests to identify unsolicited bulk email, more
commonly known as Spam. These tests are applied to email
headers and content to classify email using advanced
statistical methods. In addition, Spam Assassin has a
modular architecture that allows other technologies to
be quickly wielded against spam and is designed for easy
integration into virtually any email system.
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SpamAssassin Advantage:
SpamAssassin's practical multi-technique
approach, modularity, and extensibility continue
to give it an advantage over other anti-spam
systems. Due to these advantages, SpamAssassin
is widely used in all aspects of email
management. You can readily find Spam Assassin in
use in both email clients and servers, on many
different operating systems, filtering incoming
as well as outgoing email, and implementing a
very broad range of policy actions. These
installations include service providers,
businesses, not-for-profit and educational
organizations, and end-user systems. SpamAssassin also forms the basis for numerous
commercial anti-spam products available on the
market today. |
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Links to Filtering Software installed:
http://www.mailscanner.info
http://www.spamassassin.org
http://www.clamav.net
http://www.rulesemporium.com
http://www.rhyolite.com/anti-spam/dcc
http://razor.sourceforge.net
http://www.configserver.com/free/eximdeny.html
http://www.configserver.com/free/fail.html
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