Security Basics mailing list archives

Re: RBLs for SPAM Control


From: Alexis <bonobo () bigpond net au>
Date: Fri, 5 Aug 2005 01:48:09 +1000

On Thu, 4 Aug 2005 02:12 pm, you wrote:
As a rule of thumb, most RBLS automatically list dynamic IPs used for dial
ups / modem pools of ISPs as suspicious. Simply because any mail from a
dynamic IP is considered unsafe, in RBL terms !

Interesting . . . . i wonder how many false-positives this creates? i would 
think it would be quite a few, given the number of people who send emails 
from dynamic IPs . . . .

Nothing much you can do, other than ask your ISP to 1) add reverse DNS for
the IP blocks and 2) try to get the IP block removed from the list(s)

*nod* Okay, thanks.

Alexis.


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