[Mailman-Users] Customize an Auto-Respond Message

[Felipe]

I've searched the archives but I can't find my solution.
I want to customize the unsubscribe message which is automatically sent.
The text now reads:
You have been unsubscribed. ------------------

What I want is in carets below:
<the name and address> has been unsubscribed.<line break>
-----------------------------------

I cannot figure out how to get the name and address into the message, nor
can I get the text to break.  Is this possible?  TIA, felipe.