[Mailman-Users] Spam Problem

[Donald J. Organ IV]

I seem to be getting spam sent through mailman 

I have the following lists setup 

LIPHP (liphp at lists.liphp.org) and mailman 

mailman shouldnt actually be sending any where 

The MTA is exim4 

something sent from mailman at lists.liphp.org is being accepted and looks like sending some spam through it. I dont believe liphp at lists.liphp.org is doing this. 

Can anyone help me??