679 lines
24 KiB
Text
679 lines
24 KiB
Text
This file documents some of the problems you may encounter when
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upgrading dspam port. I will try my best to minimize these disruptions,
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but sometimes they are unavoidable.
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You should get into the habit of checking this file for changes each
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time before attempting any port upgrade.
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This file concetrate on the FreeBSD / port specific changes and one should read
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also the UPGRADING enclosed in the dspam distribution. You can see it by doing
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in the port directory:
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make extract; more `find . -type f -maxdepth 2 -name UPGRADING`
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###########################################################################
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# dspam-devel-3.10.1,1
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#
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Fix a problem with queries when using MySQL 5.5
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###########################################################################
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# dspam-devel-3.10.0,1
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#
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No change from RC1.
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###########################################################################
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# dspam-devel-3.10.0.r1,1
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#
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Various small fixes / improvements, see the CHANGELOG for details.
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###########################################################################
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# dspam-devel-3.8.0,1
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#
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- Official "stable" release
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- fixed message corruption problems with direct delivery (when using direct
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delivery (e.g. DeliveryHost), certain servers require a linefeed after
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carriage return otherwise the message will become malformatted).
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- added a patch to fix CRLF pairs that are not correctly stripped out when
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saving the message to the quarantine mbox file; useful if using LMTP or
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SMTP (as opposed to running the client directly from a delivery script),
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*AND* you are using the quarantine feature [1] I'm interested if anything
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breaks in the WebUI if you're not using either SMTP or LMTP.
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[1] patch from John Peacock <jpeacock@rowman.com>
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http://mailing-list.nuclearelephant.com/6023.html
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###########################################################################
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# dspam-devel-3.6.8.20061010.1118_1,1
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#
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Port changes:
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- added safecat as LDA [1]
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- give user the possibility to configure where dspam.conf is [1]
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- bump PORTEPOCH to fix a stupid mistake (which had no real impact on the
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port but there's no other way to do it - on 2006-12-17)
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[1] patch from Emil Isberg <emil@pyttemjuk.se> [1]
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###########################################################################
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# dspam-devel-3.6.8.20061010.1118
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#
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Port changes:
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- fix longtime standing bug regarding CLAMAV: if "WITHOUT_CLAMAV_LOCAL=true"
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clamav support wasn't compiled in
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- added Cyrus's 2.3 deliver as LDA OPTION [1]
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Change features:
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- removed oracle driver (unmaintained, didn't work on FreeBSD anyway)
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New features:
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- ability to add tagline to messages based on their classification; see
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tagSpam and tagNonspam preferences in README
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Bug fixes:
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- fixed bugs from last release causing pgsql to fail on connection + other
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fixes
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- bugfix for segfault on mysql fail and null strlen calls for username
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[1] ports/103910 for mail/dspam by Steffen Rick <srick@srick.org>
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###########################################################################
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# dspam-devel-3.6.7.20060604.1555
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#
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Change features:
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- API change !!
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- SupressWebStats is now WebStats in dspam.conf, and setting is inverted.
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- The 'Tokenizer' setting in 3.8.0 replaces tokenizer definitions in the
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"Feature" clause of previous version configurations. See dspam.conf.
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- if using hash_drv storage driver, you should run cssconvert to upgrade
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your .css files to a fully malaligned format.
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- Earlier versions of 3.6 did not prepend a leading "-l" flag to specifying
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log file selection. This is now required.
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- renamed PValue "graham" to "bcr"
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- dspam_train now works with filenames containing spaces
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- +various optimizations to: tokenizer core, hash_drv driver (store offset
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for writes), libdspam (preference lookups), osb/sbph
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- HashMaxSeek defaults to 10
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New features:
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- OSB tokenizer
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- ProcessorURLContext has been added to toggle whether URL specific tokens
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are created in the tokenizer process. The "on" value is default for
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previous versions of DSPAM.
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- HashPctIncrease; see dspam.conf
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- --client support for dspam_train
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- cache runtime user information in daemon mode
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- added logging of viruses (and the source)
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Bug fixes:
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- infinite loop on all non-preference-extension calls to delete a preference
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- segfault when dlopen() to storage driver library fails
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- segfault caused by bad use of va_args when vsyslog is called
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- segfault in daemon mode when DeliveryHost or ClientHost is not specified
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- added a connection check for pgsql, to reconnect on failure in daemon mode
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- in hash_drv fixed some bugs which may have caused a crash
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###########################################################################
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# dspam-devel-3.6.6 (stable release)
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#
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Removed features:
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- Phased out deprecated Berkeley DB drivers
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Bugfixes:
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- when using logfile, write errors result in segfault
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###########################################################################
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# dspam-devel-3.6.5.20060513.1125
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#
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New feature:
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- Fallback domains (see 2.6 in README)
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Bug fixes:
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- trainPristine preference turned "off" now overrides config turned "on"
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- segfault fix for when correcting messages using UIDInSignature with MySQL
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Removed features:
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- dspam_corpus (replaced by newer dspam_train)
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- dspam_genaliases (replaced by parse-to-headers, virtual users, etc)
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###########################################################################
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# dspam-devel-3.6.5_1
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#
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Add dspam_debug rc.d options (default off): starts dspam with debug
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logging (you need at least WITH_DEBUG).
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Also fixed a few typos (like MIN_OPTIONS_VER value) in Makefile.
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###########################################################################
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# dspam-devel-3.6.5
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#
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3.6.5 stable release, identical to our previous CVS snap detailed bellow.
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###########################################################################
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# dspam-devel-3.6.4.20060421.2101
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#
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Bug-fixes:
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- invalid read/segfault (dspam.c)
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- segfault on problems establishing connectivity to clamav (dspam.c)
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- segfault on NULL username (mysql_drv.c)
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- bug causing writing of flat-file preferences to fail (pref.c)
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- fragment file overwritten on retrain (cgi)
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- corrects the output of "dspam_admin aggr pref" (tools/dspam_admin.c)
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- prevent quarantining of message when delivering summary
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WebUI: a lot of fixes and improvements
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PostgeSQL: improvements to purge scripts and object creation script
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Port changes:
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-------------
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Add MySQL 5.1 as backend. [1]
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Default MySQL version is now 5.0
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Optionally depend on LightHTTPD instead of Apache if WITH_CGI=on [2]
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Fix OPTIONS handling for INDEX (describe); this is a long standing bug
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and a *big* pontyhat for me; it affected _only_ dependecies recorded in
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INDEX _if_ OPTIONS were not set (like for package building); however,
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the package itself was always built right, dependecies recorded OK, etc.
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Add SCE-tindy as MASTER_SITE, much faster site that my other server. [3]
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Requested by: Odhiambo WASHINGTON <odhiambo.raburu@wananchi.com> [1]
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Submitted by: "Daniel S. Haischt"
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<me@daniel.stefan.haischt.name> [2] (based on)
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My thanks again to Joey Freeland for this machine and the bandwidth [3]
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###########################################################################
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# dspam-devel-3.6.4.20060315.1518
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#
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New feature:
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- support for reading from multiple mysql servers; support for separate
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read/write servers to be used with mysql_drv; see dspam.conf
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- SYSLOG options knob: log to via syslog if "on" or in flat file if "off"
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- dspam_stats: -t for displaying a total of all stats included in the
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original query
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Bugfixes:
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- fixed a bug causing --deliver=summary to return no output when used in
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dspamc
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- fixed a segfault which can occur if TrainingMode is not specified in
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dspam.conf
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###########################################################################
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# dspam-devel-3.6.4_1 (Added post-factum, mega libtool commit)
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#
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No functional changes, PORTREVISION bump for plist chage because now we
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install .la files.
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###########################################################################
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# dspam-devel-3.6.4
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#
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- dspam_train: support for training using an index file to define the order
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of ham/spam
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- dspam_stats: OR --> OCA
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###########################################################################
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# dspam-devel-3.6.3.20060211.0037
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#
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WebUI:
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- mass-retraining option
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dspam.conf:
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- HashRec sizes prime numbers for better spread
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###########################################################################
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# dspam-devel-3.6.3.20060208.1807
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#
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WebUI:
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- undo option for retraining
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- support for existing storeFragments option to recall message in history
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Documentation:
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- of all user preferences in the README.
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###########################################################################
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# dspam-devel-3.6.3.20060203.1409
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#
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BugFixes:
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- accuracy fixes (esp. for FP dspam is much better that in 3.6.3 release)
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- safeguards for segfault when strange clamav behavior
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- for no output when using --classify in client/server mode
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- LOG_WARNING if truncating MySQL user/pass + plus othersmall fixes
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New features:
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- dspam_train: a true training and testing mechanism, useful for building
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pretrained databases or training a user with their own corpus. also provides
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a test jig for measuring efficiency/accuracy with a corpus over a
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configuration.
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- DeliveryHost for delivery to different hosts based on domain
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- ClassAlias options, useful if classifying things other than spam
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Removed features:
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- removed neural networking (NEURAL_NET), which was experimental, needed a
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rewrite, no support, and high maintenance
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Changed features:
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- changed names in dspam_stats; now displays TP (true positives),
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TN (true negatives), FN (false negatives), and FP (false positives).
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- dspam_corpus now uses default settings for features and training modes,
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instead of its own and now requires --spam or --nonspam arguments
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- the trainining buffer (Feature tb=n in dspam.conf) is now offby default
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- no signature on classify
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- ignore X-DSPAM-* in tokenizer code
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###########################################################################
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# dspam-devel-3.6.3
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#
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BUGFIX: fixed bug causing "no trusted delivery agent configured" error when
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calling dspam withot an agent configured, but not delivering - or when using
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--classify
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BUGFIX: fixed minor bug causing ChangeUserOnParse to format incorrectly
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Notable changes:
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- rewrote some routines that were strdup'ing message body repeatedly
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- changes to tokenization and probability assignment make a noticeable
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difference in accuracy
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- updated dspam_stats "-S" output to use more widely accepted readings:
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SHR: Spam Hit Rate (true positive rate)
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HSR: Ham Strike Rate (false positive rate)
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OCA: Overall Classification Accuracy
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- add large-scale support to dspam_logrotate
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###########################################################################
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# dspam-devel-3.6.2_1 (2005-12-11 19:18)
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#
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Fix memory leak in BNR.
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###########################################################################
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# dspam-devel-3.6.2 (2005-12-11 21:34)
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#
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Memory leak still here :(
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BUGFIX: segfaults in daemon mode with hash_drv plus other hash_dvr fixes
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BUGFIX: for how token values are calculated, cutting false positives nearly
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in half
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BUGFIX: close connections to ldap after calls
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on ldap failure fail database creation
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CLAMAV* now only enables clam support in dspam; use CLAMAV_LOCAL to
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RUN_DEPEND on the port and have it REQUIRED in the rc script.
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Add MYSQL_LOCAL and POSTGRESQL_LOCAL options to RUN_DEPEND on servers and
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have them REQUIRED in the rc script.
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###########################################################################
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# dspam-devel-3.6.1 (2005-11-17)
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#
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fix RUN_DEPENDS for WITH_CGI=on by USE_APACHE=1.3+, no need to upgrade if
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already installed
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###########################################################################
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# dspam-devel-3.6.1
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#
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!!! WARNING: Both dspam 3.6.0 and 3.6.1 have a memory leak !!!
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Watch the size and res (top -o size or top -o res) of dspam process and
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restart it (/usr/local/etc/rc.d/dspam-devel.sh restart) when it gets to big.
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BUGFIX: ParseToHeaders can segfault on malformatted To header
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BUGFIX: TrackSources does not correctly parse messages with QMail Received
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headers
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BUGFIX: Missing check for existing strcasestr
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BUGFIX: X-DSPAM-Reclassified heading appears blank
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BUGFIX: Plused-Detail support does not work with domains
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BUGFIX: Hash databases are not 8-byte aligned (do not work with 64-bit systems)
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use cssconvert to convert your hash file
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BUGFIX: Certain daemon-mode operations append a trailing period
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BUGFIX: DataSource 'document' option causes improper processing
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BUGFIX: Segfaults occur on malformed Content-Type header
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BUGFIX: History appears blank in dspam.cgi
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- WITH_TRAIN_SCRIPT for an example training script dspam_train
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###########################################################################
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# dspam-devel-3.6.0
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#
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- css_drv (CRM Sparse Spectra Storage Driver) is now called hash_drv,
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hence: WITH_CSS -> WITH_HASH; also the max records number in hash_drv can
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be set in dspam.conf; WARNING: the new file format is incompatble with the
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old one but is considerable smaller
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- you can now have the database drivers dynamically loaded at run time so
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you can select multiple drivers in the OPTIONS screen; see dspam.conf.
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- also algorithm selection is done exclusively via dspam.conf
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- documented MySQL quoting bug in some versions of 4.1 (see mysql.txt),
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and added MySQLSupressQuote option to compensate
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- read UPGRADING and CHANGELOG and adjust your dspam.conf accordingly
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- !!! WARNING !!! MaxMessageSize is also applied to ClamAV virus scanning.
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Thanks to Patrick Hurrelmann <outi@bytephobia.de> for beta-testing and
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catching a few mistakes.
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###########################################################################
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# dspam-devel-3.5.2.20050725.0800
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#
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Please read carefully distributed docs like README, UPGRADING and CHANGES.
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Notable new features:
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LDAP Verification
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Unified Spam Alias / UID in Signature Support
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Integrated Clam A/V Support
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Markovian Discrimination (CRM114)
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CRM Sparse Spectra Storage Driver (css_drv)
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- drop local patch to put X-DSPAM-User in all emails.
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- some performance changes in PGSQL schema
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- BUGFIX: SQLITE purge scrip for 3.x
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###########################################################################
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# dspam-devel-3.5.0.20050512.1145
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#
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BUGFIX: fixed signature embedding on malformatted boundary bug
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###########################################################################
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# dspam-devel-3.5.0.20050506.0930
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#
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- Support for clamd virus checking via TCP (see ClamAVHost, ClamAVPort and
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ClamAVResponse in dspam.conf)
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- Support "user+detail" inbound emails and "+quarantine" outbound emails
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(see EnablePlusedDetail and QuarantineMailbox in dspam.conf)
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- BUG FIX: "obscure" [1] bug causing dspam to crash under certain conditions
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when the loose signature was provided without the appropriate delimiter
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- BUG FIX: fix sqlite3 dependency check [2]
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- BUG FIX: don't strip binary if we want GDB suport
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- BUG FIX: DOMAIN_SCALE and LARGE_SCALE are incompatible catch this before
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./cofigure fails [3]
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[1] "Obscure" = it took me about 4 hours and a 500 queue processed one by
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one by hand to catch and reproduce the problem after 7 days of mail
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processing w/o error
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[2] Pointed out by vanilla@ for mail/dspam but true here also
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[3] Pointed out by Arvinn L<>kkebakken <arvinn@whitebird.no> for mail/dspam
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but true here also
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###########################################################################
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# dspam-devel-3.5.0.20050428.1100
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#
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This is the post-3.4 devel branch. A lot of things have changed and your
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existing dspam.conf won't probably work anymore. Please compare it with the
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dspam.conf.sample located in the same etc/ directory.
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Most notable addition is the SMTP delivery which together with "standard"
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inbound LMTP make a very nice content and light (e.g. it's the fastest setup
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I've had so far) filter.
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Database structure is roughly the same but you may wish to check your
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existing database structure with the *.sql corresponding to you database
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driver from EXAMPLESDIR (Mysql 4.1.x is now default as it's _much_ faster).
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Please read carefully distributed docs like README, UPGRADING and CHANGES.
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###########################################################################
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# dspam-devel-3.4.r2.20050305.0930 (this is post RC2A)
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#
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- BUGFIX: fix dspamc hanging when using --stdout
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- BUGFIX: fixed TOE auto whitelisting
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- BUGFIX: individual logging
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- BUGFIX: parsetoheaders and daemon mode combo
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- BUGFIX: autodetect bugs in cgi
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- BUGFIXES for stats
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- BUGFIXES for some un-standard mails segfaults
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- NEW FEATURES: LMTP delivery, "standard" LMTP inbound support;
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see CHANGELOG, README and dspam.conf for details (tested slightly on BSD)
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- note (very late) SBL query support and SBL queue logging support
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(both SBL client and server ports are WIP)
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- As of 3.4 Beta 2, the PostgreSQL driver uses BIGINT instead of NUMERIC(20)
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type to store tokens in database (fully backward compatible). This change
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speedup driver and reduce storage space used by dspam. Use:
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dspam_pg2int8 /tmp/dspam_pg_mig.sql
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and follow the instructions.
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###########################################################################
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# dspam-devel-3.4.r1.20050216.0945
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#
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- if dspam --daemon SIGBUS please send your sources date, CFLAGS and other
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relevant information; this version is believed to be working; tested on:
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i386 5.2.1-RELEASE-p1, i386 5.3-STABLE, amd64 5.3-RELEASE with help from Erwin Lansing <erwin@lansing.dk>,
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"Daniel S. Haischt" <me@daniel.stefan.haischt.name> and Joey Freeland <joeyfreeland@gmail.com>
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- patch dspam.c for bug causing signature to not get written to message
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body (obtained from dspam cvs)
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- patch dspam.c to write X-DSPAM-User also in innocent messages headers
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- drop WITH_WHITELIST, it's not supported by ./configure but by dspam.conf
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- (added post-factum) change POSTGRESQL* to POSTGRESQL because of "Split the
|
||
postgresql ports into a server and a client part"
|
||
|
||
|
||
###########################################################################
|
||
# dspam-devel-3.3.4
|
||
#
|
||
|
||
The daemon mode seems to be completead now, so the port act like it should:
|
||
- if enabled with WITH_DEAMON we install the rc script; to start it at
|
||
boot put 'dspam_enable="YES"' in /etc/rc.conf and set the appropriate
|
||
options in dspam.conf
|
||
- read section "2.3 Client/Server Mode" from dspam README to learn how to
|
||
use dspam in daemon mode
|
||
- a simple portupgrade from previous versions will work with no problems
|
||
with your current setup, even if compiled with WITH_DEAMON (default)
|
||
|
||
- change default DB back-end to MySQL to make daemon mode work for package
|
||
building
|
||
- add MySQL v5.0.x support -- MYSQL50
|
||
(based on ports/74761 by Gea-Suan Lin <gslin@netnews.NCTU.edu.tw>)
|
||
- USE_MYSQL and have make describe output right
|
||
|
||
- change of name: SQLITE --> SQLITE2, as we now have sqlite3 support
|
||
- add Sqlite v3.x support -- SQLITE3
|
||
- add BNR_DEBUG option
|
||
- drop QUARANTINE_AGENT as is not supported by ./configure anymore and
|
||
set in dspam.conf UntrustedDeliveryAgent and QuarantineAgent to default to
|
||
TrustedDeliveryAgent, but leave them commented out
|
||
(ports/75548 by Julien Gabel)
|
||
- change default DSPAM_HOME_MODE to 0770
|
||
(ports/75549 by Julien Gabel <jpeg@thilelli.net>)
|
||
- DSPAM_HOME_{OWNER,GROUP} default to DSPAM_{OWNER,GROUP}
|
||
- default maximum message size to 300KB in dspam.conf
|
||
- correct long-standing copy/paste bug (DSPAM_{GROUP,MODE} were set to
|
||
DSPAM_HOME_{GROUP,MODE})
|
||
- USE_MYSQL and have make describe output right
|
||
- add support for exim [2] which we build with the same database back-end
|
||
as dspam if possible ( suggested, incorrectly, in ports/74762 by
|
||
Shahbaz Javeed <sjaveed@adderpit.com> )
|
||
- fix PREF_EXT and BDB4 cases as well in our Makefile
|
||
|
||
|
||
#############################################################################
|
||
# dspam-devel=3.3.0.a.20041203.1245_1 (entry added post-factum, it was an
|
||
# automated update approved by me but not under my control)
|
||
#
|
||
|
||
- chase dependecy for sqlite
|
||
|
||
|
||
############################################################################
|
||
# dspam-devel-3.3.0.a.20041201.1330
|
||
#
|
||
|
||
Say hello to the daemonized dspam! Enble it at compile-time with DAEMON option.
|
||
|
||
- it speaks LMTP:
|
||
LHLO
|
||
MAIL FROM: [password]@[server id]
|
||
RCPT TO: [list of DSPAM users] [DSPAM parameters] [delivery agent parameters]
|
||
DATA
|
||
[message]
|
||
.
|
||
|
||
- daemon processes *and* delivers at the moment (including to stdout).
|
||
- For client-side delivery, use --stdout and configure your MTA to deliver.
|
||
- it may be necessary to perform all delivery in the client, as using fork &&
|
||
pipe in a MT app may be bad
|
||
- implemented multiple responses per recipient
|
||
- changed storage driver layer to use a driver context (for caching connections)
|
||
- stateful db connections done for mysql driver
|
||
- to do next: client
|
||
|
||
- remember that all this is experimental and it may change at any time.
|
||
|
||
|
||
############################################################################
|
||
# dspam-devel-3.3.0.a.20041125.0945
|
||
#
|
||
|
||
- changed the naming scheme because of to many upstream modification in
|
||
tarball naming - right now it lacks any version (for the same reason the
|
||
distfile is renamed from snapshot.tar.gz to PKGNAME and sits on my server);
|
||
\ it is now made up of:
|
||
PORTNAME: dspam-devel
|
||
next MINOR_VERSION: 3.3.0
|
||
we're in pre-beta: a
|
||
SNAPSHOT_DATE: 20041125.0945
|
||
\ the strange ``a'' is necessary for pkg_version to work correctly when we will
|
||
have the 3.3.0 beta's, rc's and release (tested with pkg_version -t)
|
||
|
||
- follow the update procedure from the entry bellow
|
||
|
||
- there is a new and very useful dspam.conf option:
|
||
MaxMessageSize - specify a maximum message size to process
|
||
\ I suggest setting it somewhere between 100 and 300 KB, it is unlikely the
|
||
spam you are receiving is bigger and this will improve performance as big
|
||
messages won't stuck the database
|
||
|
||
- tum mode has been enhanced and it should outperform teft
|
||
|
||
###############################################################################
|
||
# dspam-devel-3.2.0-20041027.0930 (never comited in the cvs, don't ask me why):
|
||
#
|
||
|
||
- dspam configuration is now done via dspam.conf
|
||
|
||
- please remove any OPTION
|
||
|
||
- the following OPTIONS should be set now in dspam.conf
|
||
OPTION .conf name def. value
|
||
-------------------------------------------------------------------------------
|
||
DSPAM_HOME Home /var/dspam
|
||
WITH_*_LDA TrustedDeliveryAgent mail.local
|
||
UntrustedDeliveryAgent /usr/libexec/mail.local d %u
|
||
QUARANTINE_AGENT QuarantineAgent #
|
||
|
||
WITH_SPAM_SUBJ Preference "spamAction=tag" #
|
||
Preference "spamSubject=SPAM" #
|
||
USER_LOGGING UserLog on
|
||
SYSTEM_LOGGING SystemLog on
|
||
WEBMAIL TrainPristine off
|
||
WITH_OPT_IN Opt out
|
||
SAT TrackSources spam ham #
|
||
PARSE_TO_HEADERS ParseToHeaders on
|
||
BROKEN_MTA Broken lineStripping #
|
||
BROKEN_ERR_CODES Broken returnCodes #
|
||
SIGNATURE_HEADERS Preference "signatureLocation= message" # headers
|
||
|
||
- the following OPTIONS should does not exist anymore:
|
||
SIGNATURE_ATACH WITH_HOMEDIR_DOT
|
||
|
||
- the following OPTIONS have their name changed to follow vedor names
|
||
TRAD_BAYES GRAHAM_BAYES
|
||
ALT_BAYES BURTON_BAYES
|
||
WITH_SIGNATURE_LIFE SIGNATURE_LIFE
|
||
|
||
- new OPTIONS
|
||
OPTION port default
|
||
----------------------------------------------
|
||
LOG_DIR /var/log/dspam
|
||
WITH_USER_HOMEDIR
|
||
DSPAM_HOME_OWNER
|
||
DSPAM_HOME_GROUP
|
||
DSPAM_HOME_MODE
|
||
DSPAM_MODE
|
||
DSPAM_OWNER
|
||
DSPAM_GROUP
|
||
|
||
To upgrade you should:
|
||
|
||
0. Read docs enclosed with teh dpsam distribution, beginnig with UPGRADING and
|
||
README
|
||
|
||
1. Adjust your OPTIONs
|
||
( make rmconfig config in dspam port dir, command line, pkg_tools.conf )
|
||
|
||
2. make VARs.......
|
||
in dspam port dir with appropiate OPTIONS adn VARs (see changes above)
|
||
|
||
3. stop you MTA or deactivate dspam from it
|
||
|
||
5. make VARs........ install
|
||
|
||
4.a) If using MySQL 4.0.xx or PostgreSQL:
|
||
- back-up the database
|
||
- use the appropiate migration script from files dir of dspam port dir
|
||
(if using MySQL 4.1.x or 3.xx you're on your own for now)
|
||
|
||
5. Back-up and them move the files from the old DSPAM_HOME
|
||
(defaulted: /usr/loca/etc/dspam) to the new DSPAM_HOME (default /vad/db/dspam)
|
||
or where ever you defined DSPA_HOME in 2 above.
|
||
|
||
6. Adjust you new dspam.conf according with your setup OPTIONS and VARs defined
|
||
on make / mak install step.
|
||
|
||
7. Remove the old setup files (you have them in the back-up, right ?)
|
||
|
||
7. Enable dspam in the MTA setup, but only locally or something and start testing.
|
||
|
||
If something ain't working is one of:
|
||
- permissions problems (hint: with what UID
|
||
is dspam called from your MTA vs. DSPAM_HOME and DSPAM_LOG_DIR)
|
||
- something wrong in dspam.conf (hint: you didn't remove old config files
|
||
and they are still used ?)
|
||
|