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The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . spamassassin-heatu-3.02+20101108.orig/sa-heatu.html0000644000077100007660000002705611452076011016432 0ustar Spam Assassin Heuristic Email Address Tracker Utility sa-heatu 3.01 100904

sa-heatu

version 3.01

A utility to display, edit and age the Spam Assassin Heuristic Email Address Tracker database ~/.spamassassin/auto-whitelist.

HEAT Background☟

This version contains a significant enhancment

There is now a parallel hash file containing date entries.

sa-heatu matches entries from auto-whitelist with timestamps entries. If the count from the auto-whitelist entry is greater then the timestamps entry, the timestamps entry is updated with the current time and count. If there was no timestamps entry one is created.
Entries that have not been updated in 183 days are expired.

This utility now operates in a "current file in, new file out" mode as opposed to the previous "update in place" mode. This may cause the hash files to be reduced in size due to expiring entries. Deleting entries from a hash does not reduce it's size.

This very simple minded approach to aging permits expiring old entries without any impact on spamassassin's operation.

sa-heatu is used to maintain the database†

sa-heatu --quiet | --showUpdates | --verbose
--firstTimes | --DONTupdateTimestamps | --noTimestamps
--expireOlderThan days
--remove nnnnnn@dddddd.xxx [dbFile [timeStampFile ]]

--quiet Don't output anything.
--showUpdates Output entries updated or added or removed, in addition to the summary,
--verbose Output every entry.
Warning the output should piped to a filter or redirected to a file as is be very long
--firstTimes Use this for the first run to avoid reading timestamps.
--DONTupdateTimestamps  
--noTimestamps No timestamps processing is done.
--expireOlderThan days Expires entries older than days i.e. they are not written to the output files.
Default: 183
--remove nnnnnn@dddddd.xxx Remove entries with this email address and any IP address
dbfile Score and count database (perl hash file). Default:auto-whitelist
timestamps timestamps database (perl hash file). Default:timestamps
-h
sa-heatu Spam Assassin - Heuristic Email Address Tracker Utility  3.02 100817  
                    DGermansa@Real-world-Systems.com (c)2010 Dennis G German  

 usage: sa-heatu --quiet --showUpdates --verbose  
                 --firstTimes --DONTupdateTimestamps  --noTimestamps   
                 --expireOlderThan days 
                 --remove nnnnnn@dddddd.xxx                          dbfile timestamps

Recommended Operation

Run daily from cron. Suggested script:

/usr/local/bin/sa-heatu -showUpdates >> ~/.spamassassin/sa-heatu.log
if [ $? -ne 0 ]; then echo "sa-heatu failed, databases unmoved\!"; exit 1; fi
#
rm auto-whitelisto timestampso
# Now save the old files to  xxx-1 and install the ones output by sa-heatu.
mv -f auto-whitelist  auto-whitelist-1 ; if [ $? -ne 0 ]; then echo "mv auto-whitelist  failed, I quit\!";exit 1; fi
mv auto-whitelisto auto-whitelist;       if [ $? -ne 0 ]; then echo "mv auto-whitelisto failed, I quit\!";exit 1; fi
mv -f timestamps  timestamps-1;          if [ $? -ne 0 ]; then echo "mv timestamsp      failed, I quit\!";exit 1; fi
mv timestampso timestamps;               if [ $? -ne 0 ]; then echo "mv timestampso     failed, I quit\!";exit 1; fi
echo "autop-whitelist, timestamps updated"

Output from sa-heatu can be sorted to display frequent (or rare) senders of spam (or ham ).

Running sa-heatu --verbose should be avoided unless the output is redirectrd to a file or piped to a filter since the database contains a (surprisingly) large number of entries.

Display ham senders:

(Remember the date and time stamp is the time sa-heatu was run, not the time the email was received). average total count email address ip network address last time updated sa-heatu --verbose --DONTupdateTimestamps |sort -n | head -5 

   -19.3     -96.3   5   jason.haar@trimble.co.nz                    222.154; kept, Aug 20 21:24 2010†
   -19.3     -96.3   5   karliak@ajetaci.cz                          77.48; kept, Aug 20 21:24 2010
   -19.3    -115.6   6   scheidell@secnap.net                        204.89; new,
   -19.3    -115.6   6   si@yacc.co.uk                               62.232; new, Aug 27 21:59 2010
   -19.3    -134.9   7   mkitchin.public@gmail.com                   66.238; kept, Aug 20 21:24 2010
Display spammers:

sa-heatu --verbose --DONTupdateTimestamps |sort -rn | head -4 

    61.8     123.5   2   claims_office001@kimo.com                    221.2; kept,Aug 20 21:24 2010
    60.8      60.8   1   mr.williams.wright@gmail.com                 82.128; kept, Aug 20 21:24 2010
    56.2     112.4   2   danjos_01@yahoo.com                          41.26; kept, Aug 20 21:24 2010
    55.2     110.5   2   danjos_01@yahoo.com                          67.205; kept, Aug 20 21:24 2010

Find senders whose messages are incorrectly adjusted.

To display a single sender's record:
    sa-heat --noTimestamps --verbose | grep -i Spammer@example.com

Remove the entries for a particular email address, for all IP networks :
   sa-heat --noTimestamps --remove spammer@example.com
   mv -f ~/.spamassassin/auto-whitelisto autowhitelist

Included in the tar is 64c.hexdump which is a formatting specification file for hexdump which can be used to display the timestamps and other perl hash files.

hexdump -f 64c.hexdump timestamps

See www.Real-World-Systems.com/docs/hexdump.1.html

top

HEAT Background

The Heuristic Email Address Tracker feature in spamassassin retains a summary of scores from messages received by email address and IP network address.
When a new message is received, the final score is adjusted as a function of the previous average value resulting in a:
  • boost  from senders who have sent ham (nice messages) or a
  • penally from senders who have sent spam

    The final SCORE of a message is calculated by:
  1. SCORE based on rules
  2. Compute DELTA as (MEAN-SCORE)*auto_whitelist_factor (from configuration)
  3. Bump SCORE by DELTA
The result is compared against required_score and if the message score is greater, it is considered spam.

Negative values indicate senders of ham, positive values senders of spam.

The sender's email address, the IP adress, accumulated score, and number of emails received are stored is in a perl hash.

Spammers have been known to use this to their advantage by sending a benign email which scores high as ham. They then send spam which has it's score "neturalized" by the Heuristic Email Address Tracker scheme and the message will be, falsely, considered ham!
If you receive a message that is clearly spam, check X-Spam-Report in the message header for the string:
     AWL: From: address

There is no mechanism within spamassassin to remove incorrect entries from the database.

Although this is a small amount of data, no mechanism is provided within spamassassin to expire old entries.

There has long been a discussion regarding the significantly misnamed AWL (Auto White List).

Next revision

After significant analysis and thought it seems that giving a bonus to users who send ham is not necessary. People who usually send you nice emails will continue to send nice emails an don't need any help in scoring.
Giving hammers a bonus has the unfortunate consequence that if ham is received from an spammer a subsequent message is given a little slack, i.e. a bonus, for having sent ham previously. Spammers have take advantage of this.
The PLANNED future option--dehammer deletes all entries with a negative score i.e.previously sent ham.
Please send me a message if you have comments on this, or anything else about sa-heatu

This is an enhanced version of the original tool.

This document and the current version of sa-heatu can be downloaded at: sa-heatu.3.02.tar



Previous versions of this utility included --prune which has been depricated. The idea was that:
"The size of the database can be significantly reduced by using:     sa-heat --prune This caused any entry with only 1 entry to be removed on the (somewhat mistaken) assumption that an emailer that has only sent 1 email isn't worth remembering."

This is definitly mistaken as if a spammer has recently sent a message he may soon send another.

spamassassin-heatu-3.02+20101108.orig/sa-heatu0000755000077100007660000002546711452075742015510 0ustar #!/usr/bin/perl -w # Very loosely based on http://svn.apache.org/repos/asf/spamassassin/branches/3.2/tools/check_whitelist # rewrirren by DGermansa@Real-World-Systems.com # my $u1 = " sa-heatu Spam Assassin - Heuristic Email Address Tracker Utility 3.02 101002 \n". " DGermansa\@Real-world-Systems.com (c)2010 Dennis G German "; my $u2 = " usage: sa-heatu --quiet --showUpdates --verbose \n". " --firstTimes --DONTupdateTimestamps --noTimestamps \n". " --expireOlderThan days \n". " --remove nnnnnn\@dddddd.xxx dbfile timestamps \n"; # " --onlySpammers \n". ( dont save entries with -xx scores, even friends dont spam! # 3.01 don't show day o week or seconds since it it sa-heatu runtime, reduce size of timestamp by keeping it in minutes # simple: copy autowhite-list entries to output, # while updating a timestamp file by taking count from auto-whitelist and incuding a timestamp to new entries # meanwhile skipping old entries (effectively deleting them), # removing a specific entry and # displaying the total score, average, count, email, IP, firstSeen # all the other code is deciding what to display # autowhite-list is opened RDWR to minimize attempts by spamd to update while we are running.( not the best ) #after sa-heatu completes: # mv auto-whitelist auto-whitelist-1 # mv auto-whitelisto auto-whitelist # mv timestamps timestamps-1 # mv timestampso timestamps # # showUpdates show itimestamps expired, added sub usage { print $u1,$u2; exit;} use strict; use Fcntl; use Getopt::Long; #http://perldoc.perl.org/Getopt/Long.html use English; # get descriptive names for built-in variables # 3.02 correct -noTimestamps spelling was noTimesamps second t missing AND disptime ="" if noTimestamps # 3.01 in -> out to clean up deletes. prune makes no sense, removed. Display timestamps # 3.00 add timestamps file $OUTPUT_AUTOFLUSH = 1; $OUTPUT_RECORD_SEPARATOR ="\n"; # print (not printf !) use vars qw( $opt_min $opt_help $opt_showUpdates $opt_verbose $opt_remove $opt_quiet $opt_prune $opt_NoTimes $opt_NoUTimes $opt_XOT $opt_firstTimes); my $false=0; my $true=1; my ($db, $ts, $dbo, $tso, %h, %t, %ho, %to, @k, $k, @tk, $tk, $tkey, $tcount, $twas); my ($key, $email, $ip, $totscore, $count); my ($width, $fmt, $disptime, $reason, $prt, $prtu, $skipf, $tstamp, $lastUpdate, $oldest); my $numc=0; my $remc=0; my $tnewc=0; my $updatedc=0; my $expiredc=0; my $wouldbe=""; my $malformedc=0; my $entrieso=0; GetOptions( 'help' => \$opt_help, 'showUpdates' => \$opt_showUpdates, 'verbose' => \$opt_verbose, 'noTimestamps' => \$opt_NoTimes, 'DONTupdatetimestamps' => \$opt_NoUTimes, 'expireOlderThan=i' => \$opt_XOT, # can't --remove and --expire 'firstTimes' => \$opt_firstTimes, 'remove=s' => \$opt_remove, # can't --remove and --expire 'prune=i' => \$opt_prune, # deprecated, just ignore 'quiet' => \$opt_quiet ) or usage(); $opt_help and usage(); $opt_verbose ||= 0; $opt_NoTimes||= 0; $opt_NoUTimes||= 0; $opt_XOT||= 183; $opt_firstTimes||= 0; $opt_remove ||= ""; $opt_showUpdates ||= 0; BEGIN { @AnyDBM_File::ISA = qw(DB_File GDBM_File NDBM_File SDBM_File); } use AnyDBM_File ; if(!$opt_quiet) { print $u1; if($opt_firstTimes){print " First timeStamp run, i.e. no input from timestamps ";} if($opt_NoUTimes) {print " No updating of times will be done ";} if($opt_NoTimes) {print " No timestamp processing will be performed ";} } if (defined $ENV{COLUMNS}) {$width= ($ENV{COLUMNS}-66).""; } else { $width=20;} if ($#ARGV == -1) { $db = $ENV{HOME}."/.spamassassin/auto-whitelist"; } else { $db = $ARGV[0]; } $dbo = $db."o"; if ($#ARGV != 1) { $ts = $ENV{HOME}."/.spamassassin/timestamps"; } else { $ts = $ARGV[1]; } $tso = $ts."o"; tie %h, "AnyDBM_File",$db, O_RDWR, 0600 or die "Cannot open \"$db\" $!\n"; ## use O_RDWR to keep spamd away if(!$opt_quiet){ print " Reading $db ";} tie %ho,"AnyDBM_File",$dbo, O_CREAT, 0600 or die "Cannot create \"$dbo\" $!\n"; ## create will use old if exists! if(!$opt_quiet){ print " Writing $dbo ";} $opt_remove = lc($opt_remove); # If he specified mixed case change uppercase -> lower if($opt_remove ne "" && !$opt_quiet) { print "Attemptimng removal of:\"$opt_remove\" ";} if ( !$opt_NoTimes ){ if( !$opt_firstTimes){ tie %t, "AnyDBM_File",$ts, O_RDONLY, 0600 or die "Cannot open:\"$ts\" $! \n"; if(!$opt_quiet){ print " Reading $ts ";} } tie %to, "AnyDBM_File",$tso, O_CREAT, 0600 or die "Cannot create:\"$tso\" $! \n"; if(!$opt_quiet){ print " Writing $tso ";} if(!$opt_firstTimes) {@tk = grep(!/00-lastupdate$/,keys(%t)); $lastUpdate = $t{"00-lastupdate"}; if ( defined $lastUpdate ){ if(!$opt_quiet){print " Timestamps last updated:". localtime($lastUpdate)}; } else {die " !! lastupdate key \"00-lastupdate\" is missing!! Did you mean to use --firstTimes ? \n\n";} $opt_XOT = time - $opt_XOT*24*60*60; # days to minutes, to seconds prior to now if ( $opt_XOT > 0){ $fmt=localtime($opt_XOT); print " Expiring entries not seen since $fmt";} } # not first time } # !NoTimes i.e. timestamps active @k = grep(!/totscore$/,keys(%h)); # make an array of keys excluding the totscore keys # generate the formatting specs, vary the width of the email shown based on how wide the display is $fmt= "\n %7.1f %9.1f %3d %-" . $width . "s %s; %s"; if (!$opt_quiet && $opt_verbose ){ print " average total count ";} # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # for $key (@k) { $numc ++; $count = $h{$key}; $totscore = $h{"$key|totscore"}; if( !defined $totscore){ $malformedc++; next;} ($email = $key ) =~ s/\|.*//; # clear |ip=nnn.nnn from key ($ip = $key ) =~ s/.*\|ip=//; # clear email@dom.tld|ip= from key eaving nnn.nnn $skipf=$false; $prtu=$false; # candidate for print updates? $reason=""; if ($email eq $opt_remove ) { $remc++; $reason="remvd,"; $prtu=$true; $skipf=$true; } if(!$opt_NoTimes ){ # example 8/14/2010 14:21 IS 1281810061 $tcount=$count; # use count from awl for new or unchanged entries if($opt_firstTimes){ $tnewc++; $twas=0; $tstamp=time; $reason=""; } else{ if(!defined $t{$key} ) { $tnewc++; $twas=0; $tstamp=time; $reason="new, "; $prtu=$true;} # existing: else{ ($twas = $t{$key} ) =~ s/,.*//; # clear ,and count leaving time ($tcount = $t{$key} ) =~ s/.*,//; # clear beginning of time entry leaving tcount if( $tcount < $count){ $updatedc++; $tstamp=time; $reason="updtd,"; $prtu=$true; $tcount=$count;} else{ $tstamp=$twas;$reason="kept, ";} if ($email eq $opt_remove ) { $reason="remvd,"; } # this looks lame but... if($twas lt $opt_XOT ) { $expiredc++; $reason="exprd,"; $prtu=$true; $skipf=$true;} # lt string compare (in case twas is text??) } # new | update | kept timestamp } # ! first times } # ! No Times # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # This looks lame but is easy to understand ( and get right!!) --quiet only affects summary since, $prt=$false; # default shows summary, not details if($opt_showUpdates && $prtu){$prt=$true;} # showUpdates if($opt_verbose) {$prt=$true;} # verbose (overrides showUpdates) if($prt){ printf $fmt, $totscore/$count, $totscore,$count, $email, $ip, $reason; if($opt_NoTimes ){ $disptime="";} else{ $disptime=localtime $twas; # don't include d-o-w, and drop seconds as that implies precision $disptime =~ s/... //; #day o week out $disptime =~ s/:.. / /; #seconds out printf "%s", $disptime ; } } # if prt if(!$skipf){ $entrieso++; $ho{$key} = $h{$key} ; $ho{"$key|totscore"} = $h{"$key|totscore"} ; # how ugly is this key! if(!$opt_NoTimes){ if ($opt_NoUTimes) {$to{$key} = $t{key};} #keep old values else {$to{$key} = $tstamp.",".$tcount;} } # NoTimes } # !skip } # end for key next $to{"00-lastupdate"}=time; untie %h; untie %ho; untie %t; untie %to; if ($opt_NoUTimes){$wouldbe=" would be";} if( !$opt_quiet ){ if($width < 30){print " \n export COLUMNS=nnn and you will get a nicer display!";} print "\n average total count \n"; # footing since heading was so long ago printf "%8d entries removed. \n", $remc; printf "%8d entries". $wouldbe." expired. \n", $expiredc; printf "%8d timestamps". $wouldbe." added. \n", $tnewc; printf "%8d timestamps". $wouldbe." updated. \n", $updatedc; if($malformedc){printf "%8d missing \"totscore\" \n", $malformedc; } print " "; printf "%8d entries input. \n", $numc; printf "%8d entries output = input - expired - removed. \n\n", $entrieso; } exit 0 ; # I would appreciate notification if you distribute or modify this program # of if you have ideas on how to improve it. # DGermansa@Real-World-Systems.com # License: # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # See the GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # Copyright (C) 2010 Dennis G German # tar -vcf sa-heatu.3.02.tar sa-heatu sa-heatu.readme sa-heatu.html 64c.hexdump style.css COPYING spamassassin-heatu-3.02+20101108.orig/sa-heatu.readme0000644000077100007660000000521611440437126016722 0ustar Spam Assassin - Heuristic Email Address Tracker Utility Modified the original AWL tool It can be found at: http://real-world-systems.com/mail/sa-heatu.tar un tar it with tar -vxf sa-heatu.tar to get sa-heatu the perl program usage: sa-heatu --quite --showUpdates --verbose --firstTimes --DONTupdateTimestamps --noTimestamps --expireOlderThan days --remove nnnnnn@dddddd.xxx dbfile timestamps without options it generates a summary like: 0 entries removed. 0 entries not retained. 0 entries expired. 69 timestamps added. 28 timestamps updated. 4388 entries. AND creates a new auto-whitelist and timestamps file with entries older than 183 days removed. Here is a simple cronjob to run sa-heatu daily: #!/bin/bash export TZ=US/Eastern cd ~/.spamassassin; if [ $? -ne 0 ]; then echo "unable to cd to .spamassassin, I quit\!";exit 1; fi ./sa-heatu -show >> sa-heatu.log1 if [ $? -ne 0 ]; then echo "sa-heatu failed, databases unmoved\!"; exit 1; fi cat sa-heatu.log1 >> sa-heatu.log ##cat sa-heatu.log1 mv -f auto-whitelist auto-whitelist-1 ; if [ $? -ne 0 ]; then echo "mv auto-whitelist failed, I quit\!";exit 1; fi mv auto-whitelisto auto-whitelist; if [ $? -ne 0 ]; then echo "mv auto-whitelisto failed, I quit\!";exit 1; fi mv -f timestamps timestamps-1; if [ $? -ne 0 ]; then echo "mv timestamsp failed, I quit\!";exit 1; fi mv timestampso timestamps; if [ $? -ne 0 ]; then echo "mv timestampso failed, I quit\!";exit 1; fi ##echo "autop-whitelist, timestamps updated" See sa-heatu.html for the details Let me know if you use it and what you think? Dennis G German Manager, Computer Systems Real-World-Systems, Inc # Copyright # # Copyright (C) 2010 Denis G German # # License # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . spamassassin-heatu-3.02+20101108.orig/64c.hexdump0000644000077100007660000000014511440244745016023 0ustar "%05_ax " "%7_ad "16/1 "%_p" " " 16/1 "%_p" " " 16/1 "%_p" " " 16/1 "%_p" "\n"