Stephan Weishaupt wrote:
i want to leave this group but i dont know the data i
used to register :-(
Go to https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
Insert your email (the one with which you sent this) on the last
textbox. Click on 'Unsusbscribe or edit options'. On next page press
'Unsubscribe'. You'll receive an email with instructions to unsubscribe.
Follow the link :)