Re: More and more spam coming from <>

[David Ford]

I prefilter with spamassassin and /dev/null everything that scores 5 and 
above.  TMDA comes next.  Using spamassassin, I reduce my spam count 
from around 3-500 spams a day to a few dozen.  TMDA has a lot less work 
to do after that which makes my mailboxes 99% spam free.

~ $ cat .procmailrc

SHELL=/bin/sh
SPAMFOLDER=${HOME}/mail/spam/spam
POSTMASTER_MAIL=${HOME}/mail/Postmaster
#---------------------------------------------------------------------------
# mail handling guide
#
# 1> get rid of obvious junk
#
# 2> make a copy of the inbound email
#
# 3> kill spamassassin tagged email
#
# 4> sic TMDA on the attack
#
# 5> post processing of my .procmail-tmda-delivery is done by tmda, 
lists, etc
#

#---------------------------------------------------------------------------
# Kill spamassassin tagged mails with lots of points (anything 5 points 
and higher is devnulled)
:0
* ^X-Spam-Level: \*\*\*\*\*
/dev/null

#--- just in case ----------------------------------------------------------
INCLUDERC=${HOME}/.procmail-backup
# block unsubscribes
:0
* ^Subject:.*(un[- ]?subscribe|remove (me|my address))
/dev/null
# Anything left that is still tagged as spam, send it to the spam folder
:0
* X-Spam-Status: Yes
$SPAMFOLDER
:0
* Return-Path: <MAILER-DAEMON>
$POSTMASTER_MAIL
## Set the necessary environment variables.
EXTENSION="$1"
:0
* EXTENSION ?? .
{
 DELIMITER="+"
}
RECIPIENT="[EMAIL PROTECTED]"
SENDER=`formail -x Return-Path | sed 's/[<>]//g;s/^[ ]*//'`
# Run the message through tmda-filter.
:0 w
| /usr/bin/tmda-filter
# friggen TMDA always sends back 75, 99, etc for anything that didn't go 
into pending.
EXITCODE=0

# TMDA takes care of final delivery
DEFAULT=/dev/null


Rick Mann wrote:

I'm getting more and more spam that has very high statistical spam 
scores (in my setup, anything remotely spam gets fed to TMDA), but 
then it has an empty envelop sender, so TMDA lets it through. What's 
the best solution for this?

On the one hand, I'd like to be able to configure TMDA to react 
differently for different spam scores (something we've discussed 
before), so that perhaps it could auotmatically bounce high spam 
scores while quarantining medium ones and passing low ones. But right 
now I can only key off of the "Yes" or "No" associated with the spam 
score added by my bayesian filter (bogofilter).

TIA,

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