[CLUE-Tech] The SPAM Wars '03

[Mike Staver]

Ok, I've been fighting spam with serveral methods on my red hat box for
a while now.  I basically use 3 methods to keep it from bothering me in
my /etc/mail/access file:

1) Blocking individual email addresses:
SharonS457 at yahoo.com REJECT

2) Blocking entire domains:
directmailorderbrides.com REJECT

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 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 realize that in rare cases, this would end up blocking some legitimate
emails, but I think it's a risk I'm willing to take.  Can anybody tell
me if I can block that sort of thing using sendmail?  I'd also like to
block all incoming emails addressed to:

Undisclosed.Recipients at fimble.com

Is that possible?
-- 

                                -Mike Staver
                                 staver at fimble.com
                                 mstaver at globaltaxnetwork.com