I use RBL checks along with a bunch of rules in sendmail.mc to reject 
mail.  In addition to all of that, I also use a couple of services that 
automatically updates the access database (/etc/mail/access.db), plus I 
have a bunch of entries in /etc/mail/access that I've added myself.  What 
I did was add some code to the init script for sendmail that updates 
access.db so that all of the entries are combined and no duplicate entries 
are allowed.  I had to do that otherwise when sendmail is restarted 
access.db would be overwritten using the contents in /etc/mail/access.  I 
use two shell scripts that are run from cron to keep everything up to 
date.  The upshot of this is that I block a lot of spam before 
Spamassassin even gets into the picture.  Anyway, below are the scripts 
that I use and the accompanying cron entries.

Filename: uceprotect
#!/bin/sh
cd /tmp
/usr/bin/wget -N "http://www.admins.ws/modules.php?name=Downloads&d_op=getit&lid=31";
gzip -d -f -c access.gz | makemap hash -o -r -v /etc/mail/access
Cron entry: 5 0,4,8,12,16,20 * * * /etc/mail/uceprotect

Filename: spamlist
#!/bin/sh
rsync -z --verbose 
rsync://informatie.easynet.nl:6666/spamblock/spamlist-extended.txt 
/tmp/spamlist-extended.txt
cat /tmp/spamlist-extended.txt | makemap hash -o -r -v /etc/mail/access
Cron entry: @daily /etc/mail/spamlist

Here are the lines that I added to /etc/init.d/sendmail (you'll need to 
make sure that this is inserted at the appropriate place),

        gzip -d -f -c /tmp/access.gz | makemap hash -o -r /etc/mail/access
        cat /tmp/spamlist-extended.txt | makemap hash -o -r /etc/mail/access

If anyone is interested, you can grab a copy of my "personal" block list at,

        http://custweb.com/blocked_domains.html

The list that I'm using right now is more up to date than the one that 
I've made available for download.  When I get the time, I'll update the 
publicly available list.  --Scott


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