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[Jamyn Shanley <jshanley AT gmail.com>]

Yep, this sounds like the same business model the old SORBS list had.

http://en.wikipedia.org/wiki/Spam_and_Open_Relay_Blocking_System

They would block entire ranges they considered dynamic (they'd get that wrong half the time), and then only de-list you if you gave them a non-negotiable minimum "donation". SORBS was eventually bought out, and they may be legitimate now - but back then they were the most illogical and childish list administrators out there. 

I'll agree, Spamhaus is pretty good. They have automated delisting processes and their listing criteria is clear and consistent. I've been really happy with their Zen list.

On Thu, Jan 10, 2013 at 4:17 AM, Simon <simon AT hacknix.net> wrote:

On 01/10/13 03:16, Julian DeMarchi wrote:

> This is the first RBL I have seen list a /24 for lack of PTRs. Not for
> sending spam, but just PTRs alone. How do you explain this to your
> customer?

This sounds like they're just after some fast cash by blacklisting loads
of ranges and then charging for them to be de-listed. The only RBL I
have ever felt happy using is Spamhaus.

Simon

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