I have caused an unsubscription cookie to be sent to your address.
Please follow the instructions in it to complete the unsubscription
process.
+
+In the future, if you want to unsubscribe and have forgotten the
+address you subscribed from, the recipient-address is coded into the
+Return-Path.
+
+Example:
+
+Return-Path: <bounce-debian-devel=don=debian.org@lists.debian.org>
+ ^^^^^^^^^^^^^^
+
+Even if you are unable to send mail using that address, if you receive
+at that address, you can still unsubscribe using the web form;
+https://www.debian.org/MailingLists/unsubscribe