[Mailman-Users] bounce notification to owner from non members?

[Adam Morris]

Hi all,
I receive about 8 bounce messages a day for one of my lists from people 
trying to post to it who aren't members.
The list is set up as private so not sure how these spammers find it.
I've been to the bounce page but can't work out how to stop these 
messages but allow bounce messages from members?
TIA.


-- 

Adam Morris
Jaws certified 2016
Email, iMessage & FaceTime
adam at damorris.com