Re: SPF is harmful. Adopt it.

Jonathan de Boyne Pollard <[email protected]> wrote:
> > What am I missing?
> 
> You are missing the facts that 
>     (a) recipients don't have to honour notifications at all;
>     (b) sending a notification doesn't (by design) convey any of the actual 
>         message content that the sender wants the recipient to read;
>     (c) you have to count the bandwidth used to transmit the message to
>         those recipients that _do_ choose to read it, as well;
>     and
>     (d) this isn't about penalising senders, since we want to _take
>         advantage of_ the fact that sending is cheap not eliminate it, 
>         but about reducing costs to recipients.

This perhaps bears repeating (and even re-stating in simpler language), as it
is both the most powerful and most misunderstood/underappreciated feature of
IM2000.  I'll try stating it in terms of an example that demonstrates the power
that IM2000 gives to /recipients/:

I am <[email protected]>.  I receive a notification that says, in essence,
"you have message ID X waiting to be picked up from server
foobar.example.com".  The first time this happens, I'll likely do the
following:

1) Connect to the message store.
2) Tell it to not send me any more notifications about message X.
3) Retrieve only the "summary" headers of the message (i.e. who it's from, the
date, the subject, message-id:, and references:).

If, based on (3), the message looks like spam, the process ends here.
Otherwise, I might retrieve the entire message.  Of course, it might still
turn out to be spam.

If this happens more than once, I'll likely instruct my notification agent to
ignore notifications about messages on foobar.example.com, /regardless of
where the notification comes from/.

IM2000 gives recipients total control.  That is it's power.

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