Blocking SMTP traffic based upon RBL....

[Vince Vielhaber]

On Fri, 6 Aug 2004, Forrest Aldrich wrote:

> There are probably dangerous consequences to doing something like this
> improperly; however, there is a project out there called PacketBL:
>
> http://wiki.duskglow.com/index.php/Packetbl
>
> It's for Linux only, unfortunately -- however I like the idea.   It
> interfaces with the packet filtering system and selectively blocks SMTP
> (port 25, configurable) traffic based upon RBLs etc.
>
> I wonder if there is a similar way to accomplish this with FreeBSD/ipfw...

This works with qmail and any (unixish) OS:

	http://cr.yp.to/ucspi-tcp/rblsmtpd.html

It's part of the ucspi-tcp package.  I've been using it since sometime
around '98 without a problem.  Been using qmail even longer, no problem
there either.

Vince.
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