All mails contain the following in the header:

List-Unsubscribe: <mailto:IBObjects-unsubscribe@yahoogroups.com>

I think you have to do it from the same address as is subscribed to IBObjects.

HTH,
Set

At 13:10 11.06.2003 +0300, you wrote:

>hi,
>please unsubscribe from this list
>regards,