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SpamAssassin is a Perl-based application (< tt > Mail :: SpamAssassin </ tt > in CPAN ) which is usually used to filter all incoming mail for one or several users.
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SpamAssassin and is
* Claws Mail ( formerly the Sylpheed-Claws project within Sylpheed ) is a fork that offers extra and extended features, among them scoring, QuickSearch, icon themes, user-defined Actions, mailing list support, plugins for SpamAssassin, Bogofilter, RSS, Calendaring, HTML rendering, and others.
A common practice is to let procmail call an external spam filter program, such as SpamAssassin.
SpamAssassin is a computer program released under the Apache License 2. 0 used for e-mail spam filtering based on content-matching rules.
SpamAssassin is highly configurable ; if used as a system-wide filter it can still be configured to support per-user preferences.
SpamAssassin comes with a large set of rules which are applied to determine whether an email is spam or not.
A message is matched against all tests and SpamAssassin combines the results into a global score which is assigned to the message.
SpamAssassin by default tries to reinforce its own rules through Bayesian filtering, but Bayesian learning is most effective with actual user input.
SpamAssassin is free / open source software, licensed under the Apache License 2. 0.
sa-compile is a utility distributed with SpamAssassin as of version 3. 2. 0.
If this string is inserted in an RFC 2822 formatted message and passed through the SpamAssassin engine, SpamAssassin will trigger with a weight of 1000.
Hybrid filtering, such as is implemented in the open source programs SpamAssassin and Policyd-weight uses some or all of the various tests for spam, and assigns a numerical score to each test.
Incoming mail is checked by SpamAssassin and anti-virus software so that spam and viruses are hidden or deleted.
It is also used by some server-side spam filters ( for example, SpamAssassin ).
Server-side email filters, such as DSPAM, SpamAssassin, Bogofilter and ASSP, make use of Bayesian spam filtering techniques, and the functionality is sometimes embedded within mail server software itself.
Spam filtering is made possible through the use of SpamAssassin, which can be initialized from the software in serial mode or through the use of WinSpamC to call a daemon ( spamd ).
As of version 3. 0, SpamAssassin is now integrated with the Guinevere application and does not need to be called externally.
SpamAssassin and application
The 10. 4 release adds 64-bit application support, Access Control Lists, Xgrid, link aggregation, e-mail spam filtering ( SpamAssassin ), virus detection ( ClamAV ), Gateway Setup Assistant, and servers for Software Update, iChat Server using XMPP ,< ref >
SpamAssassin and tt
Mail filter programs such as procmail can be made to pipe all incoming mail through SpamAssassin with an adjustment to user's < tt >. procmailrc </ tt > file.
For this purpose, SpamAssassin provides the command-line tool < tt > sa-learn </ tt >, which can be instructed to learn a single mail or an entire mailbox as either ham or spam.
SpamAssassin and Mail
Working alongside the Eudora Internet Mail Server program, Counteragent scans emails for viruses using ClamAV and also optionally provides spam filtering through SpamAssassin.
; SpamAssassin: Mail filter to identify spam.
SpamAssassin and which
Applications which make use of Bayesian inference for spam filtering include DSPAM, Bogofilter, SpamAssassin, SpamBayes, and Mozilla.
SpamAssassin was created by Justin Mason who had maintained a number of patches against an earlier program named filter. plx by Mark Jeftovic, which in turn was begun in August 1997.
The user can also define a list of languages which they want to receive mail in, and SpamAssassin then assigns a higher score to all mails that appear to be written in another language.
SpamAssassin and used
For these reasons, many believe that blacklists should be used cautiously and if false positives are a concern, should only be included as one component in wider anti-spam measures, such as SpamAssassin.
SpamAssassin and filter
Thunderbird incorporates a Bayesian spam filter, a whitelist based on the included address book, and can also understand classifications by server-based filters such as SpamAssassin.
This allows more layers of spam filtering or higher throughput since greylisting can easily be configured as a first line of defense with a heuristic filter such as SpamAssassin handling messages that go through.
SpamAssassin and mail
* User-configurable front-ends for autoresponders, spam filtering systems such as SpamAssassin and server-side mail filters
SpamAssassin and for
SpamAssassin allows for a per-user configuration of its behaviour, even if installed as system-wide service ; the configuration can be read from a file or a database.
More methods can be added reasonably easily by writing a Perl plug-in for SpamAssassin.
* SpamAssassin Rules Emporium ( SARE ) containing many very good rules for filtering with SA ( not updated any more since early 2008 ).
* Linux New Media Awards 2006 showing that SpamAssassin received 69 % of the vote for " best Linux-based anti-spam solution "
SpamAssassin rules now include detection for such forged headers.
More complex Postfix implementations include integration with ( for example ) SpamAssassin and support for multiple ( virtual ) domain names, where data in databases such as MySQL can drive complex configurations.
SpamAssassin and several
The Kerio Connect product itself utilizes several open source products, including OpenSSL, SpamAssassin, PHP, and Qt.
SpamAssassin and .
SpamAssassin uses a variety of spam-detection techniques, that includes DNS-based and fuzzy-checksum-based spam detection, Bayesian filtering, external programs, blacklists and online databases.
In summer 2004 the project became an Apache Software Foundation project and later officially renamed to Apache SpamAssassin.
Most rules are based on regular expressions that are matched against the body or header fields of the message, but SpamAssassin also employs a number of other spam-fighting techniques.
The rules are called ' tests ' in the SpamAssassin documentation.
SpamAssassin has an internal ( configurable ) score threshold to classify a message as spam.
If SpamAssassin considers a message to be spam, it can be further rewritten.
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