On Mon, Oct 06, 2003 at 04:38:38PM +0100, Karsten M. Self wrote:
> I should know better than to tangle with the list manager, but...

I'm not *that* scary ;-)

> In this case, it's not the person complaining wh gets unsubscribed, but
> the relay address.
> 
> E.g.:
> 
>    [EMAIL PROTECTED] subscribes to debian-user.
>    [EMAIL PROTECTED] is forwarded mail by [EMAIL PROTECTED]
> 
> The bounce handler IIUC will be triggered if [EMAIL PROTECTED] starts
> bouncing, but is *not* triggered by [EMAIL PROTECTED]  
> 
> ...or am I missing something?

It depends how [EMAIL PROTECTED] is forwarding the mail. The
large majority of those relays will only change the envelope, and
won't change the Return-path. This means that when the bounce is
generated, even if it's bouncing on [EMAIL PROTECTED]'s server,
it will get sent to 
[EMAIL PROTECTED], so the
unsubscribe will work. If the MX server for faraway.bar ignores
the return-path it will usually bounce to the list's posters, 
which is surprisingly rare. I guess that with some setups, the
bounces would be sent to [EMAIL PROTECTED], but then we'd never
hear about it.

Have a look at http://cr.yp.to/proto/verp.txt for more info on 
VERP (Variable Envelope Retun Paths).

        Cheers,

Pasc
-- 
Pascal Hakim                                       +61-403-411-672
                            "Do not bend."

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