On Wed, 2 Apr 2003, Matt Kearse wrote:

> This shows up when a user sends a message, and a momentary problem with
> the network connection between 2 servers means that the message is not
> delivered, but since the Jabber protocol was not designed for message
> receipt acknowledgement the message can just disappear with the sender
> thinking it has been sent, but the recipient never actually receiving
> it.

See
 "At-least-once semantics & c2s heartbeat"
 http://www.jabberstudio.org/projects/jabberd2/features/view.php?id=1742
- this would be a rather simple solution and can also be applied to s2s
communications without any protocol tinkering. If you can think of any
drawbacks let me know.

Regards

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