[LINK] Your money dot con on ABC/RN

[Kim Holburn]

I have a friend who set up his own mail server on his broadband  
connection, a fixed IP.  He was, I should add, an experienced unix  
sysadmin who had set up many mail servers.  Because of either the  
rDNS settings provided by the ISP or the fact his IP was in a  
registered ISP client broadband pool or something like that there  
were many mail servers in Australia who would refuse to accept mail  
from his server.  It's a pity that while so much spam originates from  
botnets on ISP pools that the approach of trying to block client  
pools doesn't actually seem to limit spam while hitting people who  
set up their own mail servers.



On 2007/Jun/24, at 9:17 AM, Roger Clarke wrote:
>> At 12:40 PM 24/06/2007, Robert Hart wrote:
>>> Rick Welykochy wrote:
>>>  > The 80% of the presentation that I did listen to failed to  
>>> mention
>>>  > specifically which PC configuration was the source of all the  
>>> zombies
>>>  > that is causing this financial fraud epidemic, i.e. PCs running
>>>  > Microsoft Windows. I have never heard of a Linux or Mac or BSD or
>>>  > other Unix zombie.
>>> True - but unfortunately Linux does contribute through misconfigured
>>> mail servers that act as open relays. This problem is not as big  
>>> as it
>>> once was as most distros (certainly all the major ones likely to  
>>> be used
>>> by newbies) install an MTA default config that won't act as an open
>>> relay (eg listening only on 127.0.0.1).
>
> At 15:25 +1000 24/6/07, Adam Todd wrote:
>> Yeah most now are configured to net even relay your local mail!
>
> I (tried to) use Mac PostFix Enabler 1.2.2, and it does as you  
> describe.
>
> -- 
> Roger Clarke                  http://www.anu.edu.au/people/ 
> Roger.Clarke/
>
> Xamax Consultancy Pty Ltd      78 Sidaway St, Chapman ACT 2611  
> AUSTRALIA
>                    Tel: +61 2 6288 1472, and 6288 6916
> mailto:Roger.Clarke at xamax.com.au                http:// 
> www.xamax.com.au/
>
> Visiting Professor in Info Science & Eng  Australian National  
> University
> Visiting Professor in the eCommerce Program      University of Hong  
> Kong
> Visiting Professor in the Cyberspace Law & Policy Centre      Uni  
> of NSW
> _______________________________________________
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--
Kim Holburn
IT Network & Security Consultant
Ph: +39 06 855 4294  M: +39 3494957443
mailto:kim at holburn.net  aim://kimholburn
skype://kholburn - PGP Public Key on request

Democracy imposed from without is the severest form of tyranny.
                           -- Lloyd Biggle, Jr. Analog, Apr 1961