OT: fighting rbl's

Thomas Zehetbauer thomasz at hostmaster.org
Tue Nov 30 20:08:42 UTC 2004


On Die, 2004-11-30 at 15:31 +0000, Paul Howarth wrote:
> Having reverse DNS with a non-generic-looking name is also a good way of 
> demonstrating that the IPs are static rather than dynamic.

I have that.

> Last week, over on SPAM-L, an Israeli ISP listed their dynamic IP range and 
> *requested* that everyone block it until they could get their outgoing port 25 
> block in place.

Great, what does this prove?

> As the OP actually has a static IP, the real solution for that should be to 
> get the incorrect listings fixed, rather than stopping using dynamic IP lists 
> altogether.

It would be more useful to implement SPF and block every domain that
does not designate senders.

Tom

-- 
  T h o m a s   Z e h e t b a u e r   ( TZ251 )
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