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Re: [Asrg] Usefulness of wholesale blocking of attachments for SMTP?

2004-04-19 17:11:34
Barry Shein wrote:
My reactions to e-postage paper:

      http://www.taugh.com

...

Sheesh!

Seriously, it's been ten years, a lot of really smart people have come
up with absolutely nothing, technically, that even works a tiny little
bit.

It's time to go for an e-postage system that simply reflects the
resources being used.

My single concern with e-postage is that in the real world bulk mailers do not break into post offices and dump their mail in, nor do they bribe people to go to the post office and put mail in for them. Because the Internet serves as a pervasive communications medium, it is very easy to steal or assume someone else's identity - much easier than any phone or real world postal system. Of course stolen phone and credit cards have always been an issue, but there are laws in place and sufficient disincentive exists to discourage it. That is not true in the digital world - stealing accounts is very easy because everyone is connected and many people don't know how to secure their computers.

I am refering to the issue of hijacked computers. With an e-postage system nothing stops a spammer from stealing Aunt Mary's computer via a virus and sending out spam with her e-postage account. Who is going to pay in that case? The usual response to that example is that her e-postage account will run out. This is basically the same as rate limiting and can be done today without resorting to e-postage. But rate limiting is not always possible such as when an ISP rents out the underlying connectivity from a third party. There was also a suggestion in one of the subgroups to write up a BCP describing how to do rate limiting.

In any case, while I am not a big fan of e-postage, there are people including some group members (David Nicol, etc.) who are working on e-postage systems. If there is a sufficient interest in the industry and the community at large, and workable systems exist that require interoperability, the IETF can step in and set standards for that. Otherwise, I do not see what the ASRG or the IETF can do for or against e-postage - it is simply not within the scope of standards at this point.

Yakov






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