IM2000 over XMPP

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Hi all. I'm new to this list, so I have no idea what has been discussed before 
(is there an archive? -- I tried im2000-get.1-10, to no avail).

Anyway, I was reading some of djb's questions about IM2000 and thinking to 
myself that many of the issues would be (nearly) solved if the XMPP (a.k.a. 
Jabber) protocol was used.

Here's the scenario I'm envisioning:
Both email clients (sender and receiver) are logged on to XMPP servers at 
their respective ISPs. Now, XMPP IDs are already very similar to email 
addresses (they only add a 'resource' on the end, so [email protected] is a valid 
XMPP ID, but [email protected]/Resource is the complete ID. This allows multiple 
clients to log on to the same server w/ the same auth credentials. This 
actually works well here because we could have an IM2000 resource that keeps 
all mail traffic separate from any IM or other presence/messaging traffic). 
So, the sender ([email protected]) composes a message to the receiver 
([email protected]) and clicks Send. The sender's email client then sends a 
presence packet to [email protected]/IM2000 notifying it that it has a 
message waiting in [email protected]'s outgoing queue. If [email protected] is 
offline, the message will be stored by the XMPP server until they log in.

Let's assume [email protected] is online and has their email client running. 
Their email client will immediately notify them of the new message. The 
client can be configured to automatically download messages from trusted 
senders, and it can show certain headers or just the subject for unknown 
senders. If we assume this is an unknown sender, the receiver can now decide, 
based on the limited information sent in the 'new mail notification' packet, 
whether to download the message or 'delete' (ignore) it.
Popular XMPP clients already have TLS and GPG integration for ensuring 
transaction privacy and could also be used w/ signing to ensure that senders 
are who they say they are.

Am I off base here? Has this already been discussed?

Wes Morgan
- -- 
This American dream may be poisonous
Violence is contagious
Crowded or empty
I walk these city streets alone
Whoever brought me here
Is gonna have to take me home

"What I'll Remember Most" - Over the Rhine
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