[Mailman-Users] problems with private list

[Cathy Cramer]

I've hosted a private list on MajorDomo for about 5 years. Recently I 
moved to a server that only has MailMan 2.1.5. I am having problems 
restricting non-member posts. I set "Action to take for postings from 
non-members for which no explicit action is defined." to Discard, but 
spam messages have been distributed to the list. Are there other 
configurations that need to be specified in order to prevent this?

Also, the list I host does not allow attachments. How do I restrict all 
attachments?

Thanks in advance,
Cathy Cramer