Re: regarding spam...

[Adam Shostack <adam () homeport org>]

On Fri, Mar 29, 2002 at 09:45:01AM -0500, Marcus J. Ranum wrote:

| So, a side effect of this approach is a 'web of trust' with
| respect to noise email. :) Suppose I tell the mail system
| "I trust Dodge Mumford's judgement regarding what is spam"
| then my mail system will automatically move into my spam
| folder all emails that Dodge moves into his spam folder.
| We might choose to look out for eachother in a reflexive
| relationship, or we might choose to additionally trust an
| outside source, etc, etc.
 ...

| Does anyone know if this is already being done? Does anyone
| see any really compelling reason it wouldn't work?

You might look at an auto-responder which checks that there's a valid
from address (TMDA, Tagged Message Delivery Agent
http://software.libertine.org/tmda/)

> The DCC or Distributed Checksum Clearinghouse is a system of clients
> and servers that collects and count checksums related to about
> 1,000,000 mail messages per day. The counts can be used by SMTP
> servers and mail user agents to detect and reject or filter
> unsolicited bulk mail or spam. DCC servers exchange or "flood" common
> checksums. The checksums include values that are constant across
> common variations in bulk messages, including "personalizations." 

http://www.rhyolite.com/anti-spam/dcc/


http://spamassassin.taint.org/ is a rule based system.

Adam

-- 
"It is seldom that liberty of any kind is lost all at once."
                                                       -Hume


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