On 16 May 2006 at 15:18, David F. Skoll wrote:
> I naively wrote:
>
> > (I suppose if you somehow knew the IP address and port of a
> > listening external SMTP server, you could connect, but that wouldn't
> > be feasible for spambots.)
>
> Two seconds' thought shows that this is no protection at all for
> spambots, which could run their own DNS subsystem on their own UDP
> ports.
Or, DNS info could be included in the instructions from the bot
controller, thus requiring only one DNS query for each domain, instead
of thousands.
--
Jeff Rife |
| http://www.nabs.net/Cartoons/OverTheHedge/HDTV.gif
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