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SPAMASSASSIN(1)	      User Contributed Perl Documentation      SPAMASSASSIN(1)

NAME
       spamassassin - extensible email filter used to identify spam

DESCRIPTION
       SpamAssassin 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 clas‐
       sify email using advanced statistical methods.  In addition, SpamAssas‐
       sin 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.

SYNOPSIS
       For ease of access, the SpamAssassin manual has been split up into sev‐
       eral sections.  If you're intending to read these straight through for
       the first time, the suggested order will tend to reduce the number of
       forward references.

       Extensive additional documentation for SpamAssassin is available, pri‐
       marily on the SpamAssassin web site and wiki.

       You should be able to view SpamAssassin's documentation with your
       man(1) program or perldoc(1).

       OVERVIEW

	   spamassassin		     SpamAssassin overview (this section)

       CONFIGURATION

	   Mail::SpamAssassin::Conf  SpamAssassin configuration files

       USAGE

	   spamassassin-run	     "spamassassin" front-end filtering script
	   sa-learn		     train SpamAssassin's Bayesian classifier
	   spamc		     client for spamd (faster than spamassassin)
	   spamd		     spamassassin server (needed by spamc)

       DEFAULT PLUGINS

	   Mail::SpamAssassin::Plugin::AutoLearnThreshold
	   Mail::SpamAssassin::Plugin::Bayes
	   Mail::SpamAssassin::Plugin::BodyEval
	   Mail::SpamAssassin::Plugin::Check
	   Mail::SpamAssassin::Plugin::DKIM
	   Mail::SpamAssassin::Plugin::DNSEval
	   Mail::SpamAssassin::Plugin::FreeMail
	   Mail::SpamAssassin::Plugin::HTMLEval
	   Mail::SpamAssassin::Plugin::HTTPSMismatch
	   Mail::SpamAssassin::Plugin::Hashcash
	   Mail::SpamAssassin::Plugin::HeaderEval
	   Mail::SpamAssassin::Plugin::ImageInfo
	   Mail::SpamAssassin::Plugin::MIMEEval
	   Mail::SpamAssassin::Plugin::MIMEHeader
	   Mail::SpamAssassin::Plugin::Pyzor
	   Mail::SpamAssassin::Plugin::Razor2
	   Mail::SpamAssassin::Plugin::RelayEval
	   Mail::SpamAssassin::Plugin::ReplaceTags
	   Mail::SpamAssassin::Plugin::SPF
	   Mail::SpamAssassin::Plugin::SpamCop
	   Mail::SpamAssassin::Plugin::URIDNSBL
	   Mail::SpamAssassin::Plugin::URIDetail
	   Mail::SpamAssassin::Plugin::URIEval
	   Mail::SpamAssassin::Plugin::VBounce
	   Mail::SpamAssassin::Plugin::WLBLEval
	   Mail::SpamAssassin::Plugin::WhiteListSubject

WEB SITES
	   SpamAssassin web site:     http://spamassassin.apache.org/
	   Wiki-based documentation:  http://wiki.apache.org/spamassassin/

USER MAILING LIST
       A users mailing list exists where other experienced users are often
       able to help and provide tips and advice.  Subscription instructions
       are located on the SpamAssassin web site.

CONFIGURATION FILES
       The SpamAssassin rule base, text templates, and rule description text
       are loaded from configuration files.

       Default configuration data is loaded from the first existing directory
       in:

       /var/lib/spamassassin/3.003001
       /usr/share/spamassassin
       /usr/share/spamassassin
       /usr/local/share/spamassassin
       /usr/share/spamassassin

       Site-specific configuration data is used to override any values which
       had already been set.  This is loaded from the first existing directory
       in:

       /etc/mail/spamassassin
       /usr/etc/mail/spamassassin
       /usr/etc/spamassassin
       /usr/local/etc/spamassassin
       /usr/pkg/etc/spamassassin
       /usr/etc/spamassassin
       /etc/mail/spamassassin
       /etc/spamassassin

       From those three directories, SpamAssassin will first read files ending
       in ".pre" in lexical order and then it will read files ending in ".cf"
       in lexical order (most files begin with two numbers to make the sorting
       order obvious).

       In other words, it will read init.pre first, then 10_default_prefs.cf
       before 50_scores.cf and 20_body_tests.cf before 20_head_tests.cf.
       Options in later files will override earlier files.

       Individual user preferences are loaded from the location specified on
       the "spamassassin", "sa-learn", or "spamd" command line (see respective
       manual page for details).  If the location is not specified, ~/.spamas‐
       sassin/user_prefs is used if it exists.	SpamAssassin will create that
       file if it does not already exist, using user_prefs.template as a tem‐
       plate.  That file will be looked for in:

       /etc/mail/spamassassin
       /usr/etc/mail/spamassassin
       /usr/share/spamassassin
       /etc/spamassassin
       /etc/mail/spamassassin
       /usr/local/share/spamassassin
       /usr/share/spamassassin

TAGGING
       The following two sections detail the default tagging and markup that
       takes place for messages when running "spamassassin" or "spamc" with
       "spamd" in the default configuration.

       Note: before header modification and addition, all headers beginning
       with "X-Spam-" are removed to prevent spammer mischief and also to
       avoid potential problems caused by prior invocations of SpamAssassin.

       TAGGING FOR SPAM MAILS

       By default, all messages with a calculated score of 5.0 or higher are
       tagged as spam.

       If an incoming message is tagged as spam, instead of modifying the
       original message, SpamAssassin will create a new report message and
       attach the original message as a message/rfc822 MIME part (ensuring the
       original message is completely preserved and easier to recover).

       The new report message inherits the following headers (if they are
       present) from the original spam message:

       From: header
       To: header
       Cc: header
       Subject: header
       Date: header
       Message-ID: header

       The above headers can be modified if the relevant "rewrite_header"
       option is given (see "Mail::SpamAssassin::Conf" for more information).

       By default these message headers are added to spam:

       X-Spam-Flag: header
	   Set to "YES".

       The headers that added are fully configurable via the "add_header"
       option (see "Mail::SpamAssassin::Conf" for more information).

       spam mail body text
	   The SpamAssassin report is added to top of the mail message body,
	   if the message is marked as spam.

       DEFAULT TAGGING FOR ALL MAILS

       These headers are added to all messages, both spam and ham (non-spam).

       X-Spam-Checker-Version: header
	   The version and subversion of SpamAssassin and the host where Spa‐
	   mAssassin was run.

       X-Spam-Level: header
	   A series of "*" charactes where each one represents a full score
	   point.

       X-Spam-Status: header
	   A string, "(Yes⎪No), score=nn required=nn tests=xxx,xxx
	   autolearn=(ham⎪spam⎪no⎪unavailable⎪failed)" is set in this header
	   to reflect the filter status.  For the first word, "Yes" means spam
	   and "No" means ham (non-spam).

       The headers that added are fully configurable via the "add_header"
       option (see "Mail::SpamAssassin::Conf" for more information).

INSTALLATION
       The spamassassin command is part of the Mail::SpamAssassin Perl module.
       Install this as a normal Perl module, using "perl -MCPAN -e shell", or
       by hand.

       Note that it is not possible to use the "PERL5LIB" environment variable
       to affect where SpamAssassin finds its perl modules, due to limitations
       imposed by perl's "taint" security checks.

       For further details on how to install, please read the "INSTALL" file
       from the SpamAssassin distribution.

DEVELOPER DOCUMENTATION
	   Mail::SpamAssassin
	       Spam detector and markup engine

	   Mail::SpamAssassin::ArchiveIterator
	       find and process messages one at a time

	   Mail::SpamAssassin::AutoWhitelist
	       auto-whitelist handler for SpamAssassin

	   Mail::SpamAssassin::Bayes
	       determine spammishness using a Bayesian classifier

	   Mail::SpamAssassin::BayesStore
	       Bayesian Storage Module

	   Mail::SpamAssassin::BayesStore::SQL
	       SQL Bayesian Storage Module Implementation

	   Mail::SpamAssassin::Conf::LDAP
	       load SpamAssassin scores from LDAP database

	   Mail::SpamAssassin::Conf::Parser
	       parse SpamAssassin configuration

	   Mail::SpamAssassin::Conf::SQL
	       load SpamAssassin scores from SQL database

	   Mail::SpamAssassin::Message
	       decode, render, and hold an RFC-2822 message

	   Mail::SpamAssassin::Message::Metadata
	       extract metadata from a message

	   Mail::SpamAssassin::Message::Node
	       decode, render, and make available MIME message parts

	   Mail::SpamAssassin::PerMsgLearner
	       per-message status (spam or not-spam)

	   Mail::SpamAssassin::PerMsgStatus
	       per-message status (spam or not-spam)

	   Mail::SpamAssassin::PersistentAddrList
	       persistent address list base class

	   Mail::SpamAssassin::Plugin
	       SpamAssassin plugin base class

	   Mail::SpamAssassin::Plugin::Hashcash
	       perform hashcash verification tests

	   Mail::SpamAssassin::Plugin::RelayCountry
	       add message metadata indicating the country code of each relay

	   Mail::SpamAssassin::Plugin::SPF
	       perform SPF verification tests

	   Mail::SpamAssassin::Plugin::URIDNSBL
	       look up URLs against DNS blocklists

	   Mail::SpamAssassin::SQLBasedAddrList
	       SpamAssassin SQL Based Auto Whitelist

BUGS
       See <http://issues.apache.org/SpamAssassin/>

AUTHORS
       The SpamAssassin(tm) Project <http://spamassassin.apache.org/>

COPYRIGHT
       SpamAssassin is distributed under the Apache License, Version 2.0, as
       described in the file "LICENSE" included with the distribution.

perl v5.8.8			  2013-10-01		       SPAMASSASSIN(1)
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