[Gllug] blacklisted mail servers

[Anthony Newman]

Martyn Drake wrote:
<snip>
> 
> Examples of RBLs include Spamhaus (http://www.spamhaus.org), ORDB and
> Blackholes.us (which you could use to block entire countries!).
> 
> In short, the people running the blacklisted server may just be unfortunate
> to have an IP address which falls within a range contained within a
> particular RBL organisation's database.  They need not have done anything to
> get in it.  The only thing they can do is to find out which RBL they're in
> and ask them why they're in it.
> 

I know of at least one DNSBL who have gone to the extent of adding all 
apparently dynamically-assigned IP address space (based on internet 
registry information) to their list; the rationale presumably being that 
  people on DHCP'd broadband etc. don't need to run a mail server, so 
any mail originating from their address is likely to be as the result of 
a trojan/zombie stylee compromise.

An offshoot of this is that re-classified/re-assigned address space may 
be contaminated or have not been correctly updated with the registry, so 
it is possible to have a contaminated recently-assigned static IP 
address block, which can lead to some head scratching :)

DNSBLs are basically evil organisations staffed by fascist pigs, but a 
lot of fools have been sucked into the easy spam-culling with which they 
attract new addicts before stinging you with the "good stuff", which 
entails a huge amount of grief and massively overloaded mail servers 
because no-one will accept mail from you. AOL come a close second with 
their own interpretation of the same thing.


Anthony
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