[Mailman-Users] how to disable main mailman-request and mailman list without stopping mailman functionality

[Jelle de Jong]

Hello everybody,

I am seeing our mailman at lists.company.nl being used to try to spam 
people and receiving mail delivery failures from 
mailman-request at lists.company.nl attempts.

I removed the mailman mailinglist but that ended up disabling mailman 
and all of the mailinglsit from working. I created the mailman 
mailinglist again and the spam started again.

I looked at the the options but can not find the right ones that might help?

PS. I had mailman not advertised by default but some Debian update a 
while back seem to have made it advertised. I disabled the advertising 
of the list but the spam keeps coming. Maybe disable advertising by 
default for the mailman default list?

What are the recommended steps?

Kind regards,

Jelle de Jong