[Fwd: camram/sender pays e-mail system]

[R. A. Hettinga]

--- begin forwarded text


Date: Mon, 12 May 2003 23:23:57 -0400
From: "Eric S. Johansson" <esj at harvee.org>
To: "R. A. Hettinga" <rah at shipwright.com>
Subject: [Fwd: camram/sender pays e-mail system]

Hey Bob.  I sent this off to the asrg mailing list.  I have no idea if they will 
even notice.  I'm currently over 3500 messages behind and I'm not going to start 
reading now.  I'm too busy doing real work toward solving the spam problem.

If any of your subscribers to your PC mailing list would like to try it out, 
feel free to contact me directly to ask questions, get helpful pointers, or when 
the instructions fail them.

---eric


-------- Original Message --------
Subject: camram/sender pays e-mail system
Date: Mon, 12 May 2003 15:34:02 -0400
From: Eric S. Johansson <esj at harvee.org>
To: asrg at ietf.org <asrg at ietf.org>

Previously, a significant number of folks expressed support for a sender-pays
email model, with a fairly vocal group opposed. The problem was, nobody had any
real world experience to support their arguments.

Now we're one step closer to developing that real-world experience. I have
completed release 0.1a of Camram. It is a working system, complete with
stamp-generation and stamp-validation support.

The official announcement is as follows:

Camram is a scalable hybrid spam detection and management system that pioneers a
sender-pays e-mail model combined with traffic analysis and Bayesian filtering
to combat spam. Camram is immediately effective, but is designed to embrace
other anti-spam technologies and strategies as they are developed.

Core features:
- Global or local administration models
- Powerful systemwide or per-user filtering
- Multiple white-listing mechanisms
- Support for no notification, simple notification and challenge notification
responses
- Simple web-interface administration
- Supports mailing-list detection and handling to prevent false identification
- SMTP proxy for stamp generation and whitelist formation and management
- Completely decentralized system:
   - no centralized infrastructure to bog down
   - no central authority passing judgment on e-mail privileges
   - scales extremely well
- User-controlled postage thresholds: users can adapt as spam methods change
- Pushes "costs" onto the sender:
   - the spammer "pays" for sending all messages
   - recipient costs kept to a minimum,
   - no centralized infrastructure cost
- Has mechanisms to accommodate pre-stamp environment:
   - growth can be organic
   - no dramatic breaks with the past
- Supports freedom of speech
- Provides structure for recipient-controlled commercial e-mail environment

--- end forwarded text


-- 
-----------------
R. A. Hettinga <mailto: rah at ibuc.com>
The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
44 Farquhar Street, Boston, MA 02131 USA
"... however it may deserve respect for its usefulness and antiquity,
[predicting the end of the world] has not been found agreeable to
experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'

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