[Mimedefang] Somewhat OT: Dictionary attacks

[Ben Kamen]

Which brings up another thought:

That of using such gathered output to generate another DNSBL of some sort. ;)

How many bad recipients is acceptable? I have my throttling set at 2.

  -Ben


David F. Skoll wrote:

> Hi,
> 
> Are MIMEDefang list denizens seen a huge increase in dictionary attacks?
> I know I am.
> 
> Below is a shell script I run from cron every 5 minutes to firewall off
> hosts doing harvesting.  It's Linux-specific, but can easily be
> adapted for other systems.
>