[Mailman-Users] How do the spammers do it?

[Mike Avery]

Someone else said they are pulling their hair out.  Me too!

This has happened several times - I create a new list for a local 
group.  I add the users to it myself.  I make the list public in the 
Mailman/listinfo web page.  And within 2 weeks, the list starts getting 
spammed.

How do they get the list name?  Is there any way to hide it better?  
I've been lucky that none of the spam has actually made it to my lists, 
but it's annoying to have to wade through the blocked messages to 
separate the wheat from the chaff.

Thanks,
Mike