howto unsubscribe ?

When I mailed I get this error:
"""Mail Delivery Subsystem to me
show details 11:38 (0 minutes ago)
This is an automatically generated Delivery Status Notification

Delivery to the following recipient failed permanently:

Technical details of permanent failure:
Your messages has been rejected, there are too many invalid recipients
in the group"""

Is it possible to unsubscribe me from this group.