Re: [Asrg] Lets Fix Mailing Lists

[Kee Hinckley <nazgul@somewhere.com>]

At 11:27 AM -0600 3/9/03, wayne wrote:
> I don't think setting your MX to open relays is such a hot idea, but I
> do like the suggestion given previously of setting it to 127.0.0.1.
I had to play the 127.0.0.1 game once with a domain.  My DNS server 
was getting slammed because someone sending spam claiming to be from 
ftp.somewhere.com, which didn't exist.  I wasn't getting the bounces. 
What I was getting were hundreds of DNS lookup requests every second 
from all the people trying to bounce the email.  Since the domain 
didn't exist nobody was cacheing--which meant that I got *all* of the 
DNS requests.  127.0.0.1 for ftp.somewhere.com solved that very 
nicely.  But it did make an interesting DoS attack.

Incidentally.  I've seen stats that indicate that a very large 
percentage of the lookups going to the root servers are for domains 
that don't exist.  It wouldn't surprise me if this is why.
--
Kee Hinckley
http://www.puremessaging.com/        Junk-Free Email Filtering
http://commons.somewhere.com/buzz/   Writings on Technology and Society

I'm not sure which upsets me more: that people are so unwilling to accept
responsibility for their own actions, or that they are so eager to regulate
everyone else's.
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