a side question related to this mailing list.
Is it possible, somehow, to unsubscribe an email
address from another one.
Problem is that I subscribed with one, but then
there was a change, so I had to subscribe with
Now I'm receiving double emailsi (the old one is
forwarded to the new one automatically), so I would
like to unsubscribe the old one, but I cannot easily
send an email with this old one...