Re: SPF is harmful. Adopt it.

Charles Cazabon <[email protected]>
Newsgroups gmane.mail.im2000
Message-ID <[email protected]>
Peter J. Holzer <[email protected]> wrote:
> > 
> > Yes, of course it is.  SMTP-based Internet mail is a "store and forward"
> > system.  A recipient cannot tell the difference between a hijacked machine
> > running an SMTP Relay puppet and an unknown MTS forwarding mail.  IM2000,
> > _not_ being a "store and forward" system, does not have this ambiguity.
> 
> I fail to see the difference.
> 
> Where exactly is the difference between an unknown MTA sending mail from
> an unknown mail address and an unknown IM2000 agent sending a reference
> to an unknown message store? In both cases the message can be be flagged
> as "suspicious".

In the former case, you, as the recipient, have already paid the cost of
transporting and storing the message before you can flag it as "suspicious".
With IM2000, you can make that decision /before/ the message is ever
transported to you, and the sender is paying the cost of storing it.
It's a critical difference.

> I don't see why the "ostracism mechanisms" in IM2000 should be more
> effective than RBLs are now.

Read Jonathon's use cases.  Perhaps it will become clearer; the mechanisms in
IM2000 are much more effective than RBLs, simply because of the pull nature of
IM2000.

> > No you haven't.  The situation that you describe (apparently thinking that
> > I wasn't aware of it, even though you simply repeated what I actually
> > wrote) isn't an "unsolicited bulk web page" problem, and isn't described
> > as such.  People don't complain of "unsolicited" web pages being sent to
> > them in "bulk" from such servers, because that's simply not what happens.
> 
> It isn't perceived as "unsolicited bulk web pages" by users, because they
> see it in their mailer, but in fact a lot of spam looks very much like spam
> via IM2000 would look like:

No, you totally missed Jonathon's point.  His point was that if some spammer
sets up a website selling his stuff, Joe User doesn't complain about the web
pages.  Joe User complains about the email he receives (and pays for
receiving) advertising that web page.  He doesn't give a shit about the web
page itself.  With IM2000, the cause for Joe User's concern is gone.

Charles
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Charles Cazabon                           <[email protected]>
GPL'ed software available at:     http://www.qcc.ca/~charlesc/software/
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