Trying to unsubscribe

Every time I try to Unsubscribe from the list, I get this:

Hi, this is the Mlmmj program managing the <users@global.libreoffice.org<mailto:users@global.libreoffice.org>>
mailing list.

The message from <markartman@outlook.com<mailto:markartman@outlook.com>> with subject "RE: Confirm
unsubscribe from users@global.libreoffice.org<mailto:users@global.libreoffice.org>" was unable to be delivered
to the list

Mark

So send the request to the correct address as shown at the bottom of
every email from the list?

Or show the complete response.