policy based email delivery accept/decline ?

[Dave Farber <dave () farber net>]

Begin forwarded message:

> From: Doug Humphrey <doug () joss com>
> Date: March 28, 2010 4:11:49 PM EDT
> To: David Farber <dave () farber net>
> Subject: policy based email delivery accept/decline ?

> for IP if you like
>
> A question for a lot of smart people - is it reasonable to discuss a
> set of "policy" flags on email headers which express the originators
> sensitivity to certain practices exercised on emails?
>
> As an example, I am on a number of email lists, small things, and
> generally not at ALL what could be called "public".  When I send a
> message to a list like this, I do NOT feel that I am publishing in any
> "public" sort of way, and it is understood among the members of the
> list that what is said on the list stays on the list.
>
> Recently, a couple of the members of the lists have started using  
> Gmail
> accounts.  Since Gmail/Google has specific policies that allow it to
> treat that information as its own, within a limited scope, it brings  
> into
> questions the privacy policy of the list, and its ability to enforce  
> it.
>
> A simple answer is to ban the use of Gmail accounts from the list or  
> to
> just tell people "if the Gmail thing bothers you don't send to the  
> list" - but
> while this would work in the simple immediate case, it doesn't scale
> well, and there are larger questions.
>
> MIGHT there be a technical means, with the sender stating "policy" on
> what they accept and decline to have their message subjected to, and
> the mail receiver stating their policy positions, and having  
> delivery be
> able to be rejected in case of a mismatch in policy?  Caller ID  
> works a
> lot like this with the sender deciding to allow it or not, and the  
> receiver
> being able to accept calls that have blocked ID or not as their  
> policy dictates.
>
> thanks,
> doug



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