Mike Cardwell wrote:
  

* on the Wed, Sep 03, 2008 at 11:04:48AM +0200, Alessandro de Manzano wrote:

    

I'm using CGPro 5.1.6 on a FreeBSD 6.x machine, and I would experiment
e-mail greylisting.
Anyone would share his experience about this ?
Which add-on software do you recommend for greylisting with CGPro ?
      

This could be achieved with an External Helper script. I am unaware of
any pre-made ones that do this though. I have an Exim server in front
of my CommuniGate server, so do the greylisting at that level. It's
highly effective at reducing spam.
    

I am unaware of CGP providing this type of pre-queue control to helper
scripts, they are all post-queue.  Though there is a pre-queue like mode
for applying helper rules before data is fully accepted it is not the
same as something like the Postfix Access Delegation Protocol.   This
has been a big deficiency for using CGP as a filtering front-end and it
would be great if this was resolved.  Seems to be a very low priority
though.




  

Mike