[Mailman-Users] Umbrella-bounces address?

[J.R. Constance]

I've been working on setting up and umbrella list that sends to four  
sub-lists. I have this working well if someone submits an email to  
the umbrella list and they are subscribed to the sub-lists. However,  
I have a question about the proper configuration handling a post from  
someone who is not a member of a sublist .

In Mailman FAQ 3.69 there is a section that states:

"The second issue is when a member of one sub-list posts to the  
umbrella, her post is held by the sublists of which she is not a  
member. There are two ways to deal with this. if the mm_cfg.py option  
USE_ENVELOPE_SENDER is Yes or True, you can add the umbrella's - 
bounces address to accept_these_nonmembers of sublists. In any case,  
you can add the umbrella's -bounces address as a member with delivery  
disabled and password reminders off to the sublists."

I know that this is a stupid question, but what is the umbrella- 
bounces address for any given list? If my list is List-A at domain.com,  
what would the -bounces address be?

Thanks,

J.R.