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Summary of changes since 2.5x
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- spamd supports UNIX-domain sockets
- SSL support for spamc/spamd now usable
- improved Bayes text analysis
- improved expiration of Bayes-DB
- better detection of 'invisible text' and other obfuscation techniques
in HTML
- new RBL (eg SORBS, SpamCop, Osirusoft dropped)
- better handling of RBL timeouts
- support for Razor V1 dropped
- more flexible header and report rewriting
- Perl taint mode enabled by default
- bug fixes
- new rules
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spamassassin. These patches remove all references to osirusoft from
the rules files (perhaps leaving some of the comments a tad stale),
but leaving information about them in the stats files.
This bumps us to 2.55nb2.
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This also closes PR pkg/21114 (thanks to Todd Vierling for dynamic PLIST)
Most serious bugs since release of SA 2.50 fixed (hence the 'long'
delay for the Pkgsrc package).
Dependence on procmail removed. You still need a mail delivery agent
but procmail is only a recommendation, not a prerequisite.
Runs on Solaris (somewhat tested on Solaris 8, feedback welcome).
Includes some SSL support for spamc/spamd. Not yet recommended due to
lurking bug(s) (SA bugzilla ID 1751).
Uses Perl module DB_File now instead of NDBM_File. This changes the
name and format of the auto-whitelist database ('auto-whitelist'
instead of 'auto-whitelist.db' on NetBSD).
! This release adds/changes/removes configuration options, PLEASE use !
! 'perldoc Mail::SpamAssassin::Conf' and make sure your mail !
! configuration still works as expected. !
==========================================================================
Changes since 2.52:
- corruption of Bayes db where nspam/nham was getting zeroed, fixed.
- Bayes now has much lower lock timeouts for opportunistic expiry
and auto-learning, to avoid overloading busy servers with an expiry
run. (This may result in occasional "lock failed" messages in the
syslog while you're doing manual sa-learn ops, but those are
not serious; it just means that an auto-learn could not take place
because the dbs were opened by you in another process.)
- NDBM_File does not provide an EXISTS method, worked around.
- BSMTP support (spamc -B) fixed.
- Bayes allowed the user to 'forget' messages they hadn't learned.
- sa-learn broken when installed in a non-standard location.
- spamc was failing to dump message if out of memory.
- add-all-addrs-to-blacklist was a no-op, fixed.
- syslog-socket support was broken, fixed.
- sslspamc compilation fixed.
- SIGCHLD handling in spamd was causing an ugly warning on Red Hat 8.
- user_prefs were left world-writable after auto-whitelist use.
- Razor was zeroing %ENV; protected against this.
- some test failures on 5.005 and with Razor fixed; some tests were
also still using the user's Bayes dbs.
- Windows portability fix in new Bayes journal code.
- dialup_codes now a privileged setting.
- clean PATH env variable immediately upon spamd start; fixed problem
with taint mode failures when getting hostname in Perl 5.005.
- NetBSD: fixed SSL support, spamd start script.
- single-Received-header mails were not getting DNSBL checks.
- some doco fixes.
Changes since 2.51:
- bug 1664: expiry imposed way too much load when a single
site-wide Bayes db was used, fixed
- bug 1672: a typo in a backported patch for 2.51 caused Bayes to
sometimes not unlock the db, fixed
- INSTALL now strongly recommends using DB_File
- some NetBSD support fixes
- bug 1601: option --syslog-socket wasn't implemented
- bug 1260: corrected description of --nocreate-prefs option
Changes since 2.50:
- Bayes locking and concurrency issues fixed
- Bayes expiration was not working; fixed
- spamd was not enabling Bayes after auto-learning without restart;
fixed
- safer way to attach spams, for broken mail clients, using 'report_safe
2'
- a few doco cleanups
Main changes since 2.4x:
- Bayesian filtering, using a Bayesian-style form of probability-analysis
classification. This uses an algorithm based on the one detailed in
Paul Graham's 'A Plan For Spam' paper, along with aspects taken from
Graham Robinson's work, and the chi-combining technique developed by the
SpamBayes project.
- Auto-learning. This trains the Bayesian filter automatically, based on
the results from traditional SpamAssassin diagnosis. It uses a set of
heuristics and separate thresholds to ensure (as much as is possible)
that it trains on guaranteed non-spam and spam. Old, unused tokens are
automatically expired.
- much-improved rule set. A whole new set of rules based on Message-Id
analysis is now in place, which accurately detects forged headers from
a wide range of spamware. Many inaccurate rules have been dropped.
HTML tests much improved, with a set to detect image-only spam.
- new default format for detected-spam messages; the message is
encapsulated as a MIME part, with a preview and the spam report
in the main part of the message.
- Score sets. Based on whether you are using just SpamAssassin rules,
adding network tests, and using a trained Bayesian database,
SpamAssassin will use a set of scores appropriately to gain the
maximum degree of accuracy.
- Italian, Polish, Spanish, French and German rule sets and translations.
- Much improved reliability with spamd. The problems with signals
have been cleared up thanks to a pipe-based child tracking system,
and all spamd-hanging bugs reported have proved unreproducable.
- Unicode problems with Red Hat 8 and perl 5.8 fixed. Works on Perl
5.005, 5.6.x, and 5.8.x.
- Taint-safe. SpamAssassin runs with perl's taint-checking enabled for
better security.
- Razor 1 support is now officially deprecated.
- "spamc -c" was not working, fixed. This fix required increasing the
revision of the spamd protocol; only difference is that now more than
one protocol header can appear in the reply from spamd.
- all fixes from 2.44 included.
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Parts of patch-ag and patch-ah as well as complete patch-aa could be
removed again, they are now included in SA 2.44 (see below).
#### official release announcement ###############
This is a bug-fix release, which fixes the following bugs:
- Backport fix for Bug 1306: Possible buffer overflow in libspamc when
running in BSMTP mode (patch 1.15 -> 1.18)
- Backport workaround from Bug 526: Failed sanity check because of
clobbered STDOUT (patch 1.147 -> 1.148)
- Backport fix for Debian Bug 160206: Insufficient buffer in libspamc
(patch 1.8 -> 1.9)
- Backport fix for warnings in sed_path (patch 1.141 -> 1.142)
- Backport fix for Bug 1127: Existing lowercase x-spam-status header
kills SpamAssassin (patch 1.40 -> 1.41)
- localized %ENV to fix problem where Razor2 erases the PATH so DCC
and
pyzor don't work, etc.
Note that this is *not* 2.50, which offers Bayesian filtering etc. These
bugs are already fixed in the 2.50 CVS tree, but that is not yet ready for
release. This is a stable maintainance release only.
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load_rc_config in NetBSD 1.6. This resolves PR pkg/18928 by Frank Cusack
(fcusack at fcusack com).
The rc.d script is now called on 'shutdown'.
Included fixes from SA CVS repository (2002-10-21) to minimize
impact of Razor2 on the environment vector, especially PATH.
Bumped PKGREVISION.
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Item 1) was already provided by 'inofficial' patch-af for 2.42 (now
removed).
Two new patches (-ag and -ah) from the SpamAssassin-current repository
work around a roblem with razor2 timeouts.
Logo 'ninjabutton.png' is now in the correct html directory.
Official changes:
1) AWL change reverted; instead of decreasing the AWL bias gradually to
allow frequently-seen addresses to get into the "nonspam" area, it now
behaves like 2.31 did, in that the AWL simply represents the
long-term average score from that correspondent.
2) core-dump bug in spamd worked around, _except for the "-m" switch_.
The "-m" switch relies on signal handling in the Perl interpreter,
which seems to have some bugs we cannot work around reliably on some
platforms, so its use is no longer recommended.
3) some portability fixes for SunOS.
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