[Mailman-Developers] mta integration

[Gordon Messmer]

I'd like to write a filter for the Courier MTA which will run mailman's 
approval and spam tests before accepting messages to mailing lists.  My 
filter framework is in python, so I think I can import the relevant bits 
of mailman (I'd like to start with MM2.1 compatibility).  Can I get any 
pointers to the functions that check the sender for approval, and for 
the spam-specific posting filters?