[hashcash] Re: anti-spam collateral damage
- From: "Eric S. Johansson" <esj@xxxxxxxxxx>
- To: hashcash@xxxxxxxxxxxxx
- Date: Tue, 16 Nov 2004 10:35:07 -0500
Jonathan Morton wrote:
Can you explain how an e-mail inbox is any different, except for the
fact that spammers typically have essentially zero costs per mail at
present?
there is almost no difference. Which is to say that any mailbox be it
physical or electronic, should have a postage requirement for any mail
delivered to it.
Unlike physical mail however, electronic mail should not have any
central authority for mediating access. Central authorities can be
corrupted through a variety of means. An example of this is that junk
mail pays a lower postage rate than personal mail which makes it
possible for more junk mail to be sent. The corruption occurred because
junk mail rates were seen as subsidizing personal mail rates.
by keeping e-mail postage peer to peer, you eliminate the possibility
for corruption at any level and create a more efficient system for
postage. Which is a significant difference between physical and
electronic mail.
on the same theme, another difference is that one can use dynamic
pricing for postage based on the history of traffic from a given IP
address. This is somewhat like gray listing except of using a side
effect of TCP connections, we are creating a deliberate effect through
human and computer mediated content analysis of messages and changes in
how the SMTP protocol operates.
---eric
--
Question: What's the difference between the Vietnam War and the Iraq War?
Answer: George W. Bush had a plan to get out of the Vietnam War.
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