[Mimedefang] common practice

[Cor Bosman]

> >Hi all, we're setting up a MD system and im wondering what the best 
> >practice
> >is for dealing with email sent to multiple recipients that you'd like to
> >block after the sendmail DATA phase (for instance after SA has said it's
> >spam). Obviously you cant individually send 5xx after data phase. Only can
> >either silently drop the message or bounce.  Both have their bad points.
> 
> If you want to block all of them on the same criteria, I recommend just 
> using action_bounce.  This will send an SMTP reject code, so you don't have 
> to worry about generating bounce messages to possibly fake senders - *and* 
> if it's a false positive, the sender knows his mail didn't go through.
> 
> If different recipients have different spam criteria - for instance if one 
> wants to block everything with a score above 20, another wants to block 
> everything with a score above 7, and another wants to block only messages 
> found in Razor - you'll need to look into using stream_by_recipient so that 
> each can be handled individually.

Surely this is only meant for small sites :) We do 3+ million emails a day.
Last thing I want is resend what's probably hundreds of thousands of
emails. We get emails with large amounts of recipients. 

I cant imagine a 300 recipient email exploding into 300 emails :)

Cor