[tahoe-dev] Undelivered Mail Returned to Sender

Eugen Leitl eugen at leitl.org
Mon Mar 12 10:15:02 UTC 2012


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Content-Description: Undelivered Message
From: Eugen Leitl <eugen at leitl.org>
Date: Wed, 7 Mar 2012 10:13:43 +0100
To: tahoe-dev at allmydata.org
Subject: Re: [ZS] Re: [tahoe-dev] Idea for a Publish/Subscribe Message
	System on Tahoe-LAFS
User-Agent: Mutt/1.5.18 (2008-05-17)

----- Forwarded message from Bryce Lynch <virtualadept at gmail.com> -----

From: Bryce Lynch <virtualadept at gmail.com>
Date: Tue, 6 Mar 2012 22:14:29 -0500
To: doctrinezero at googlegroups.com
Subject: Re: [ZS] Re: [tahoe-dev] Idea for a Publish/Subscribe Message System
	on Tahoe-LAFS
Reply-To: doctrinezero at googlegroups.com

Replying only to the mailing lists I'm on.  Snippage for brevity.

On Tue, Mar 6, 2012 at 03:15, Eugen Leitl <eugen at leitl.org> wrote:

> I'm also very interested in the idea of building messaging systems on
> top of Tahoe-LAFS, and I'd like to share some of those simple ideas
> with the list.
...
> Now imagine a world where instead you give a tahoe append-cap out.
> Now, this append-cap is to your inbox (the ability to have many
> inboxes say, one for a mailing list, and one for normal people, or one
> of that new startup that might want to send you some messages, is
> quite a powerful property and likely much nicer than heuristic mail
> filtering in most cases.).  So how does alice send bob an email.
>
> Alice has bob's append-cap.
> Alice creates a new message on the grid.
> Alice takes the read-cap for that message and writes that (perhaps
> with other metadata) into bob's append-cap.
>
> Bob then uses the read-cap to his inbox to look at all the message
> metadata and download the messages he wants to read.  This is where
> the system resembles Internet Mail 2000, in a grid with accounting the
> cost of storing the unread sent message is pushed to the sender.  In
> addition to this lazy fetching of messages Bob could very well use a
> client which aggressively copies messages into some directory under
> his control for archival purposes.
>
> I also expect to see some backwards compatibility with existing mail
> systems.  Instead of having Web Gateways you can have SMTP Gateways
> that are publicly available (and perhaps consume caps of the form
> append-cap at internetdomain.com) and local SMTP & IMAP gateways which
> can be used to connect mail clients to the system.

Might I point out that this is exactly what the Maildir/ format does
on the server side?

https://en.wikipedia.org/wiki/Maildir
http://cr.yp.to/proto/maildir.html
http://qmail.org/man/man5/maildir.html

Implementing this format outside of the context of an MTA would be
quite simple, and it's highly robust as well.

-- 
The Doctor [412/724/301/703]
https://drwho.virtadpt.net/
"I am everywhere."

-- 
Zero State mailing list:
http://groups.google.com/group/DoctrineZero

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Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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