SRV records (was Re: [Mimedefang] OT: www. and "lazy users")

[Jeff Rife]

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