Possible project - Python mail proxy to do greylisting, etc.

[Evan Simpson]

I'm toying with the idea of learning Twisted by writing a simple SMTP 
proxy that only deals with early connection events, before DATA.  It 
would be an MTA-independent way to do greylisting, tarpitting, smarter 
HELO analysis, things like that.

Does anyone know of an existing project like this *in Python*?  (I know 
about GNU SAUCE).

If not, I'll probably start work on MEEPT (Mail Early Event Proxy 
Transport) in a few weeks.

Cheers,

Evan @ 4-am