[ale] Spam filtering

[Christopher R. Curzio]

Well, since you're probably referring to addresses, you're probably asking
about how to test the validity of the sender, and not necessarily the
server.

Sendmail can make sure that mail is rejected from bogus host names in the
FROM field, but this will only weed out a small amount of spam, since
spammers have gotten wise to this and typically forge real domain names.

As for validating the SENDER, I don't know that you can do that. Check
here for your options with sendmail: http://www.sendmail.org/antispam.html

-- 
Christopher R. Curzio     |  Quantum materiae materietur marmota monax
http://www.accipiter.org  |  si marmota monax materiam possit materiari?
:wq!



Thus Spake "George Johnson" <gljay at netzero.net>:
Sun, 13 Jul 2003 12:17:40 -0400


> You ever tried to write back to tell the sender to stop sending the spam
> and it comes back undeliverable?  That is what I mean.  If you could
> have your server test it and find it undeliverable then drop the
> original automatically so you never see it.
> 
> gj
> 
> -----Original Message-----
> From: ale-admin at ale.org [mailto:ale-admin at ale.org]On Behalf Of
> Christopher R. Curzio
> Sent: Saturday, July 12, 2003 5:00 AM
> To: ale at ale.org
> Cc: gljay at earthlink.net
> Subject: Re: [ale] Spam filtering
> 
> 
> What, exactly, do you mean "test the validity of the sending server?"
> I'm not sure what you mean by "valid."
> 
> --
> Christopher R. Curzio     |  Quantum materiae materietur marmota monax
> http://www.accipiter.org  |  si marmota monax materiam possit materiari?
> :wq!
> 
> 
> 
> Thus Spake "George Johnson" <gljay at earthlink.net>:
> Sat, 12 Jul 2003 00:55:36 -0400
> 
> 
> > Is it possible to set Qmail or Sendmail to test the validity of the
> > sending server of each email sent?  This way if it fails to return
> > valid the email can be dropped.  And could it also keep a record of
> > all valid email hence it would check to see if it was valid before it
> > checked the sending server?
> >
> > George Johnson
> >
> > "If we run into such debts, as that we must be taxed in our meat and
> > in our drink, in our necessaries and our comforts, in our labors and
> > our amusements, for our callings and our creeds, as the people in
> > England are, our people, like them, must come to labor sixteen hours
> > in the twenty-four, give the earnings of fifteen of these to the
> > government for their debts and daily expenses; and the sixteenth being
> > insufficient to afford us bread, we must live, as they now do, on
> > oatmeal and potatoes; have no time to think, no means of calling the
> > mismanagers to account; but be glad to obtain subsistence by hiring
> > ourselves to rivet their chains on the necks of our fellow sufferers."
> > --Thomas Jefferson
> >
> >
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