5 Top Linux Anti-Spam Tools
Email is one of the primary communication channels among
users. The Radicati Group is an organisation which publishes
quantitative and qualitative research on business and consumer usage
for email, instant messaging, social
networking, wireless email, and unified communications. Their research
estimates that the number of email accounts in the world is around 3
billion, and growing at a rate of 7% each year. Corporate
users send and receive about 105 email messages per day, with 19% of
email messages being identified as spam despite the use of spam
The cost of spam is frightening, estimated to be
approximately 0 billion each year. The tide of the daily
spam is a continual thorn in the side for both providers and users.
Spam is a waste of valuable network bandwidth, disk space and takes
up users' valuable time to declutter their mailboxes. Many spam
messages contain URLs to a dubious website or websites, peddling
fake pharmaceutical products, replicas, enhancers, or gambling.
Alternatively, the URLs may be phishing attacks, for example taking an
unwitting victim to a site which seeks to steal private information
such as bank account login data.
There are a number of techniques that help fight the tide
of spam. These include whitelisting, spam buckets, bayesian filtering,
fuzzy logic techniques, and attachment scanning.
To provide an insight into the quality of software that is
available, we have compiled a list of 5 proficient open source Linux
anti-spam tools. Each application warrants our highest recommendation.
Now, let's explore the 5 email tools at hand. For
each title we have compiled its own portal page, a full description
with an in-depth analysis of its features, together with links to
relevant resources and reviews.
||Highly configurable email gateway for multiple
domains and servers
based transparent SMTP proxy server
||Perl-based spam filter using text analysis
scanner and spam detector
||Bayesian anti-spam classifier written in Python
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Last Updated Sunday, September 08 2013 @ 12:12 PM EDT