a415440a32
Pkgsrc changes:
- p5-Storable is no longer a necessary.
- Let DragonFlyBSD also use the rc.d script (patch-ad).
- Sa-update needs p5-libwww (for LWP::UserAgent, HTTP::Date),
p5-Archive-Tar and p5-IO-Zlib.
- Many of the plugins are available as pkgsrc packages (p5-Mail-SPF-Query,
p5-IP-Country, p5-Net-Ident, ...) but are not required.
- Renamed some options to follow the naming conventions described in the
pkgsrc guide.
- Removed patch-ax again; it is already incorporated in 3.1.0.
- Reworked DESCR to use less than 25 lines.
- Removed SPAMASSASSIN_VERSION for clarity of DISTNAME and PKGNAME.
- Prepended variables internal to the package with an underscore.
- Rearranged MAKE_PARAMS alphabetically.
- Simplified some internal variables (concatenation instead of
substitution: _EGDIR, _DOCDIR,...)
- Loop variables use all lower-case now.
- Added a rule to lower score for mail from pkgsrc-bugs in netbsd_lists.cf.
- The test t/spf.t (fails for SPF_HELO_*) has a know problem (SA Bug 4685).
Relevant changes since version 3.0.4:
=====================================
- Apache preforking algorithm adopted; number of spamd child processes is now
scaled, according to demand. This provides better VM behaviour when not
under peak load.
- Inclusion of sa-update script which will allow for updates of rules and
scores in between code releases.
- added PostgreSQL, MySQL 4.1+, and local SDBM file Bayes storage modules. SQL
storage is now recommended for Bayes, instead of DB_File. NDBM_File support
has been dropped due to a major bug in that module.
- detect legitimate SMTP AUTH submission, to avoid false positives on
Dynablock-style rules.
- new Advance Fee Fraud (419 scam) rules.
- removed use of the Storable module, due to several reported hangs on SMP
Linux machines.
- Converted several rule/engine components into Plugins such as:
AccessDB, AWL, Pyzor, Razor2, DCC, Bayes AutoLearn Determination, etc.
- new plugins: DomainKeys (off by default), MIMEHeader: a new plugin to perform
tests against header in internal MIME structure, ReplaceTags: plugin by Felix
Bauer to support fuzzy text matching, WhiteListSubject: plugin added to
support user whitelists by Subject header.
- TextCat language guesser moved to a plugin. (This means "ok_languages"
is no longer part of the core engine by default.)
- Razor: disable Razor2 support by default per our policy, since the
service is not free for non-personal use. It's trivial to reenable.
- DCC: disable DCC for similar reasons, due to new license terms.
- Net::DNS bug: high load caused answer packets to be mixed up and delivered as
answers to the wrong request, causing false positives. worked around.
- DNSBL lookups and other DNS operations are now more efficient, by using a
custom single-socket event-based model instead of Net::DNS.
- add support for accreditation services, including Habeas v2.
- better URI parsing -- many evasion tricks now caught.
- URIBL lookups are prioritized based on the location in the message
the URI was found.
- mass-check now supports reusing realtime DNSBL hit results, and sample-based
Bayes autolearning emulation, to reduce complexity.
- sa-learn, spamassassin and mass-check now have optional progress bars.
- modify header ordering for DomainKeys compatibility, by placing markup
headers at the top of the message instead at the bottom of the list.
- spamd/spamc now support remote Bayes training, and reporting spam.
- spamc now supports reading its flags from a configuration file using the -F
switch, contributed by John Madden.
- added SPF-based whitelisting.
- Polish rules contributed by Radoslaw Stachowiak.
- many rule changes and additions.
24 lines
1.3 KiB
Text
24 lines
1.3 KiB
Text
SpamAssassin is a mail filter to identify spam. It will examine
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each message presented to it, and assign a score indicating the
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likelihood that the mail is spam.
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It applies a wide range of heuristic tests on mail headers and body text
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to identify "spam", also known as unsolicited commercial email. The mail
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can then be optionally tagged as spam for later filtering.
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The spam-identification tactics used include header analysis, text analysis,
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a Bayesian-style form of probability-analysis classification and DNS
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blacklists. It also includes plugins to support reporting spam messages to
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collaborative filtering databases such as Pyzor, DCC, and Vipul's Razor.
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The distribution provides a command line tool to perform filtering, along
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with a set of perl modules which allows SpamAssassin to be used in a
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variety of different spam-blocking scenarios.
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In addition, "spamd", a daemonized version of SpamAssassin which runs
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persistently, is available. Using its counterpart, "spamc", a lightweight
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client written in C, an MTA can process large volumes of mail through
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SpamAssassin without having to fork/exec a perl interpreter for each message.
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SpamAssassin does not deliver mail to the users mailbox. You need a
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different program (procmail is recommended) for local mail delivery.
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