# per <http://hawkins.dropbear.id.au/Software/Mail_Filtering/Procmail.html>     

# maximum verbosity
#VERBOSE=on
 
# tell procmail where mail will be stored
#MAILDIR=$HOME/Maildir/
 
# logfile name
#LOGFILE=$HOME/procmail.log


# run the mail straight through the spamassassin program, 
# which will add some headers to it, depending on its spam
# status
:0fw
* < 256000
#| spamassassin -P
| spamc

# Work around procmail bug: any output on stderr will cause the "F" in "From"
# to be dropped.  This will re-add it.
:0
* ^^rom[ ]
{
  LOG="*** Dropped F off From_ header! Fixing up. "
  
  :0 fhw
  | sed -e '1s/^/F/'
}

# Mails with a score of 15 or higher are almost certainly spam (with 0.05%
# false positives according to rules/STATISTICS.txt). Let's put them in a
# different mbox. (This one is optional.)
# 10 or higher
#:0:
#* ^X-Spam-Level: \*\*\*\*\*\*\*\*\*\*          
#almost-certainly-spam

# All mail tagged as spam (eg. with a score higher than the set threshold)
# is moved to "probably-spam".
#:0:
#* ^X-Spam-Status: Yes
#probably-spam