Unsubscribing from this list not possible!

[Carsten Otto]

Hello!

I'd like to unsubscribe from this list, but I can't.

I enter my adress (see signature) in field at the very bottom and go
to the next site by clicking the button. There it says

"Error: Illegal Email Address: carsten.otto at gmail.com"

This is not true, the address is valid in my eyes.
Pressing the unsubscribe button gives:

"Error: No address given"

Please help.

Thanks,
--
Carsten Otto
carsten.otto at gmail.com
www.c-otto.de