#
# Kai Puolamäki's (example) procmail recipe file 
# (a.k.a. $HOME/.procmailrc)
# Last modified 1999-11-30
#
# Most parts stolen from somewhere, for example the original version of
# the mailing list processing was taken from Lars Wirzenius.
#
# Remember to (double-)check the variables and change all email-addresses!
# Note: You may want to edit the lists section, if some lists don't get
#       correctly caught by the automated system.
#
# You can disable the filter by renaming your .forward file to something
# else, e.g.: mv $HOME/.forward  $HOME/forward (at least in systems using
# sendmail)
#
# This filter can co-operate with Spam Bouncer. In its default
# configuration it is designed to be as easy to use, simple,
# effective and maintenance free, etc. etc., as possible.
#
# See my web page for further info on how to apply this filter:
# http://www.iki.fi/kaip/mail/filter.html
# It contains for example info on how to update your whitelist as you send
# mail, without you even knowing about it.
############################################################################

#
# CONFIGURATION begins
#

SHELL=/usr/bin/ksh                     # point to your copy of ksh
SENDMAIL=/usr/lib/sendmail             # your copy of sendmail (for SB)
MAILDIR=$HOME/Mail                     # hopefully this directory exists
LOGFILE=$MAILDIR/LOG                   # the logfile
FORMAIL=$HOME/bin/formail              # where is formail?
GREP=/usr/local/contrib/bin/gfgrep     # where is fgrep?
ALTFROM=puolamak+auto@pcu.helsinki.fi.CHANGETHIS  
                                       # alternate "From" line for autoreplies
                                       # (for SB)
NOLOOP=$ALTFROM                        # leave as is (for SB)
ADMINFOLDER=$DEFAULT                   # mail bounces, other administrivia
SPAMFOLDER=$DEFAULT                    # for definite spam
BLOCKFOLDER=$DEFAULT                   # for suspicious mail
BULKFOLDER=$DEFAULT                    # for bulk mail which appears legitimate
WHITELIST=$HOME/.procmail/whitelist    # mail from these passes spam filtering
BLACKLIST=$HOME/.procmail/blacklist    # I don't wan't to have mail from these
BLACKLISTFOLDER=/dev/null              # where to put blackisted mail
LOGABSTRACT=all                        # log log log...

#
# CONFIGURATION ends
#
############################################################################

#
# PRELIMINARY PROCESSING begins
#

# backup mail to $MAILDIR/backup (make sure this directory exists) 
:0 c
backup

# store only 100 most recent messages (commented out)
#:0 ic
#| cd $MAILDIR/backup && rm -f dummy `ls -t msg.* | sed -e 1,100d`
# This recipe is most efficiently implemented as a crontab job.
# Edit your crontab file by "crontab -e" and add something like
# 39 3 * * * cd $HOME/Mail/backup && rm -f dummy `ls -t msg.* | sed -e 1,100d`

# nuke duplicate messages (e.g. mail sent both to mailing list and your
# personal address)
:0 Wh: msgid.lock
| $FORMAIL -D 8192 msgid.cache

# regenerate "From" lines to make sure they are valid
:0 fhw
| $FORMAIL -I "From " -a "From "

# Count the number of lines, if necessary
:0
* ! ^Lines:
{
   # Count number of lines
   :0B
    * 1^1 ^.*$
    { }
    LINES = $=

    # Add Lines: header
    :0 fhw
     | formail -a "Lines: $LINES"
}

# send bounced mail and mail from admin accounts to its own folder
:0:
* (^FROM_MAILER|\
   ^From.*[^0-9A-Za-z]abuse@|\
   ^From.*[^0-9a-zA-Z]spam@)
| $FORMAIL -A"X-Sorted: Admin" >>$ADMINFOLDER

# kill mail from people listed in blacklist (I don't need this, but maybe 
# you do)
#:0: 
#* ? test -f ${BLACKLIST} && ( ${FORMAIL} -zxFrom: | $GREP -i -f ${BLACKLIST} )
#| $FORMAIL -A"X-Sorted: Blacklist" >>$BLACKLISTFOLDER

#
# PRELIMINARY PROCESSING ends
#
############################################################################

#
# MAILING LISTS begins
#

#
# Put all lists that you don't want to get caught by automagical 
# section here.
# 

# Join EuroCAUCE at http://www.euro.cauce.org/ :)
:0:
* ^Sender: owner-discussion@lists\.euro\.cauce\.org
| $FORMAIL -A"X-Sorted: List; EuroCAUCE" >>ecauce


# MAILING LISTS: AUTOMAGICAL SECTION begins (no need to edit)
#
# try to deduce name of mailing list (and thus its folder) from headers

:0:
* ^X-mailing-list: <\/[^@/]*
| $FORMAIL -A"X-Sorted: List; ${MATCH}" >>$MATCH

:0:
* ^Delivered-To: mailing list \/[^@/]*
| $FORMAIL -A"X-Sorted: List; ${MATCH}" >>$MATCH

:0:
* ^Sender: owner-\/[^@/]*
| $FORMAIL -A"X-Sorted: List; ${MATCH}" >>$MATCH

#
# MAILING LISTS: AUTOMAGICAL SECTION ends
#

#
# Lists that don't get caught by automagicy (...or why doesn't
# everyone use Majordomo?)
#

# If you are interested: http://www.tky.hut.fi/%7Eshut/ 
:0:
* ^TO_shut_jasenet@.*
| $FORMAIL -A"X-Sorted: List; SHUT jasenet" >>$DEFAULT

#
# MAILING LISTS ends
#
############################################################################

#
# SPAM FILTERING begins
#

# mail from those in my whitelist (always pass)
:0:
* ? test -f ${WHITELIST} && (${FORMAIL} -zxFrom: -zxReply-To: | $GREP -i -f ${WHITELIST})
| $FORMAIL -A"X-Sorted: Whitelist" >>$DEFAULT

# One could put here e.g. SpamBouncer: http://www.hrweb.org/spambouncer/
# It can be used to classify spam according to the recipients. Be sure
# to read the instructions carefully, though.
# NOBOUNCE=$WHITELIST
# INCLUDERC=$HOME/.procmail/sb.rc

# Really stupid test that does not really catch anything. (Use Spam
# Bouncer if you want to classify spam with procmail.)
:0:
* ^Subject: AD(V?):
| $FORMAIL -A"X-Sorted: Blocked" >>$BLOCKFOLDER

# mail to recognizable email address of mine
# This is an effective test, since usually spammers don't put 
# your email-address to the headers.
:0:
* ^(To:|Cc:).*(kpuolama[^+].*|\
               puolamak[^+].*|\
               puolamaki[^+].*|\
               kaip@iki\.fi)
| $FORMAIL -A"X-Sorted: Default">>$DEFAULT

# Mail not addressed to me goes to the bulk folder. This is where most
# of the spam ends up (in default configuration).
:0 E:
| $FORMAIL -A"X-Sorted: Bulk"  >>$BULKFOLDER

#
# SPAM FILTERING ends
#
############################################################################

# done :)