Re: [Asrg] Spam detection system proposal

["David F. Skoll" <dfs@roaringpenguin.com>]

On Wed, 5 Mar 2003, Chris Lewis wrote:

> Sorry, wrong.  All bad address removal requires is spamware that
> understands SMTP error codes.  No reverse channel of any kind required.

Unless your recipient is running MS Exchange:

http://support.microsoft.com/default.aspx?scid=kb;en-us;304897

or happens to have a Yahoo or AOL account (Yahoo and AOL do not fail
bad addresses at RCPT time.)  I'd imagine this would cover a large
class of spam victims.

My additional proposal (for making the remaining good addresses on
a spam list suspect) will handle the case of more intelligent spamware.

> > You can't clean your list unless you can receive bounces,

> Wrong as per above.

See URL.

> Most spammers don't care about rejects.  They really don't.

Good!  Then they won't bother cleaning their lists, and my scheme will work.

> Hell, even some legitimate emailers don't notice rejects and never clean
> bogus addresses.

Then this punishes them too -- good.

--
David.
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