On Wed, 5 Mar 2003 08:40:22 -0000, Shaun Brazier
<[log in to unmask]> wrote:

>I really do not know what else I can do.

You must get a list message with all routing headers intact.  This will
give clues how the mail gets to them.

>Clearly they are subscribed
>somewhere as they are receiving mail.

Yes, very true.  The trick is to find where.  One other source of such
puzzles is that some kind(?) soul may have subscribed a local distribution
list (sometimes called a 'shared folder') to your list.  The persons may in
fact be on that local list and not on your list, so you cannot unsubscribe
them.