Mike,

> 3) Blocking domains and using humor at the same time:
> sbase20.com 550 ALL YOUR BASE BELONG TO US
> sbase21.com 550 ALL YOUR BASE BELONG TO US
> sbase22.com 550 ALL YOUR BASE BELONG TO US
> sbase23.com 550 ALL YOUR BASE BELONG TO US

I thought it was "All your base are belong to us."

> I will admit, this does help cut down on the amount of spam that I get. 
> But, it doesn't stop enough of it.  So, I'd like to take even more
> drastic action in my sendmail config.  Is there a way in the sendmail
> config to specify that I don't want emails allowed in that contain
> certain key words?  Some obvious key words I'd love to keep out are:

> XXX
> Mortgage Rates
> Casino
> ADV:

I also recommend SpamAssassin.  Do this to get it (on a relatively recent
Red Hat system):

                perl -MCPAN -e shell
                install Bundle::CPAN
                reload CPAN
                install MD5
                install Mail::SpamAssassin
                install Net::DNS

Then make this script be /etc/rc.d/init.d/spamassassin :

#!/bin/sh
#
# spamassassin This script starts and stops the spamd daemon
#
# chkconfig: 2345 80 30
#
# description: spamd is a daemon process which uses SpamAssassin to check
#              email messages for SPAM.  It is normally called by spamc
#              from a MDA.

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

[ -f /usr/bin/spamd -o -f /usr/local/bin/spamd ] || exit 0
PATH=$PATH:/usr/bin:/usr/local/bin

# See how we were called.
case "$1" in
  start)
        # Start daemon.
        echo -n "Starting spamd: "
        daemon spamd -d -c -a
        RETVAL=$?
        touch /var/lock/spamd
        echo
        ;;
  stop)
        # Stop daemons.
        echo -n "Shutting down spamd: "
        killproc spamd
        RETVAL=$?
        rm -f /var/lock/spamd
        echo
        ;;
  restart)
        $0 stop
        $0 start
        ;;
  status)
        status spamd
        ;;
  *)
        echo "Usage: $0 {start|stop|restart|status}"
        exit 1
esac

exit 0


Then do this:

chkconfig spamassassin on
service spamassassin start

Then make this be your /etc/procmailrc:

DROPPRIVS=yes

:0fw
* < 256000
| /usr/bin/spamc


Then you'll be good to go.  Actual mail filtering is up to you, but I bet
you know how to do that.

CPAN rocks...

-- 
Jim Ockers (ockers@ockers.net)
Contact info: please see http://www.ockers.net/

Fight Spam! Join CAUCE (Coalition Against Unsolicited Commercial Email)
at http://www.cauce.org/ .