FW: Delivery Status Notification (Failure)

This is what I get.  I tried different spellings and hyphens but always no dice.  The email sent out previously had boosters spelled wrong.  What is the correct way to unsub?
 
Thanks,
 
Aztlano Archuleta

 

From: postmaster@mail.hotmail.com
To: somos_aztlan@hotmail.com
Date: Thu, 31 May 2012 08:53:56 -0700
Subject: Delivery Status Notification (Failure)

This is an automatically generated Delivery Status Notification.
 
Delivery to the following recipients failed.
 
       pomona-music-boostersunsubscribe@googlegroups.com
 
 
 

--Forwarded Message Attachment--
From: somos_aztlan@hotmail.com
To: pomona-music-boostersunsubscribe@googlegroups.com
Subject:
Date: Thu, 31 May 2012 15:53:55 +0000