[Speakers] OT topic idea?

[awilliam at whitemice.org]

> > Either way ... you won't hurt my feelings if this is considered to be
> > too off-topic.  But I know Adam is hurting for presenters, so I thought
> > I'd mention this.   :-)
> I don't think it's too off-topic. Lots of us run mail servers and all of them have to deal with SPAM.

Agree,  I don't think this is off topic - your solving a legitimate need.  
The Open Source part comes in in that you rejected a variety of Open 
Source solutions - fair is fair.