If you haven't seen SpamAssassin yet I suggest you'll take a look. 

http://spamassassin.taint.org/

Very useful! Ever sense I set it up on my colo linux server I haven't
had any spam at all to any of my domains.  I just recently setup a
linux box with spam assassin to simply filter out spam and redirect it
to the real SMTP server at work.  From my experience it's enterprise
ready.

-Bryan

>>> bob@traxel.com 10/02/02 12:55PM >>>
At the risk of sounding like an AOL'er

ME TOO!

On Wed, 2 Oct 2002, technomage wrote:

> I would certainly like to have something like this.
> I take great pains to insure that my home box doesn't get used as a
relay
> (open or otherwise).
>
> could you send me the postfix and other configs for me to examine?
>
> Technomage
>
> On Wednesday 02 October 2002 07:39 am, you wrote:
> > At least the encryption part is already taken care of.
> > see:
> > http://www.ietf.org/rfc/rfc2246.txt 
> >
> > I block more spam by rejecting bad HELO and rejecting
> > on non-existant domains on the RHS of email addresses than
> > from all the RBL lists I use.
> >
> > I am *still* amazed at the sheer number of whacked
configurations
> > for mail servers I see based on rejects in my logs.
> >
> > If anyone is interested I can share snippets of my Postfix
> > configs and samples of the kinds of rejects I get.
> >
> > I have been holding off on SpamAssassin until I rebuild my
> > mail server with NetBSD.
> >
> > The whole spam thing is out of control on both sides
> > and I wish I could think of a sane way to deal with it.
> >
> > Anonymous email is still available.
> > Use Anonymous Remailers and chain.
> > Mixmaster makes this pretty painless and there are tools like
mailcrypt for
> > Emacs for getting it all going.
> > There are also Windows clients for the Remailer system so no one
gets left
> > out. The Remailer Ops ( which I was one of back in the day ) have
tools in
> > place to try to prevent spam and other abuses. Sooner or
> > later spammers will figure out how to circumvent them but it
hasn't
> > happened yet.
> >
> > HTH.
> >
> > On Wed, Oct 02, 2002 at 12:08:33AM -0400, George Toft wrote:
> > > Hi Bill,
> >
> > [snipped]
> >
> > > The problem is in the content of the e-mail.  This is much like
the
> > > highway.  We pay our licensing fee to the state (fee to the
ISP), and we
> > > load up our car and drive (send e-mail).  How can you tell that
the
> > > person in the car committed some crime (violated AUP)?  You
can't, until
> > > someone else complains.  Make the roads toll-roads, like
California's
> > > private highways (require SSL), and all you've done is slow
down the
> > > system.
> >
> > [snipped]
> >
> > > George
> > >
> > > Bill Nash wrote:
> > > > So of late, more and more has been hitting my inbox. Being
the creative
> > > > and sometimes not nice person I am, I started thinking about
ways to
> > > > legitimately cut down on spam, while making spammers scream
in pain.
> > > > Doing some role reversal, I started
> > > > thinking about some of what keeps spammers in business:
> > > >
> > > >         - Difficult to block for various reasons
> > > >         - Anonymity
> > > >         - Open relays
> >
> > [snipped]
> >
> > > > First off, why aren't mail servers talking to each other over
encrypted
> > > > streams? Everyone is talking about encrypting mail to each
other, and
> > > > exchanging keys, so why not do it with the mail servers
themselves as
> > > > an additional step of security?
> >
> > [snipped]
> >
> > > > Some interesting ripple effects of this, however. What
happens to free
> > > > email suppliers like yahoo and hotmail? Conventional ISPs
have a
> > > > billing record to tie user accounts to. Hotmail has an IP
address,
> > > > which we all know isn't the most reliable thing. Yes, this
kinda
> > > > removes the anonymity aspect of email, but (oh god, here
comes a can of
> > > > worms) what's the point of anonymous email? I see the Caller
ID/Call
> > > > Blocking argument applying here.
> > > >
> > > > Alright, this is getting long, so. Hm. Where's my beer?
> > > >
> > > > - billn
>
> --
> I will not be pushed, filed, stamped, indexed, briefed, debriefed,
or
> numbered!
> My life is my own - No. 6
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----------------------------------------------------------------------
"We're on the threshold of a whole new system. The time where
accountants decide what music people hear is coming to an
end. Accountants may be good at numbers, but they have terrible
taste
in music. I don't know how I'm going to get paid, but I'd rather go
out into the brave new world than live with dinosaurs that are far
too
big for their boots." - Keith Richards - Rolling Stones Guitarist
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