[afnog] spam filter for smtp

[Noah Sematimba]

On Jun 16, 2010, at 12:18 AM, W W wrote:

> Hi Isabel,
>
> Download and install commercial version of kerio Connect from www.kerio.com 
> .
>
> You can the setup kerio to listen on initial SMTP transaction by
> changing listening port if on same application server.
>
> Forward to localhost on port 25 for Exchange/Postfix/Mdeamon/ etc.
>
> Has a beatutifil feature called SMTP greeting delay that eliminates
> most spam without even archiving it locally.

Now why would she have to get a commercial product when every free  
open source product I have ever used i.e. postfix, exim, qmail,  
sendmail can do this?

Noah.