what happens when you put a typo in a DNSBL server?

Alexander Harrowell a.harrowell at gmail.com
Tue Jan 16 16:49:30 UTC 2007


Let's all hope they don't think of the possibilities *too* quickly.

On 1/16/07, Wes Hardaker <wjhns61 at hardakers.net> wrote:
>
>
> A number of ISPs use njabl.org as a DNS BL server.  However, starting
> jan 2 a new domain exists "njalb.org" which is serving A records for
> anything queried against it's DNS server.  (note the difference: njaBL
> vs njaLB). Previous to this date a misconfigured ISP was just not
> being protected by the BL.  Now, it's potentially dropping all mail
> from anyone because of the typo.
>
> # dig +short mail.merit.edu a
> 198.108.1.11
>
> # dig +short 11.1.108.198.combined.njabl.org
>
> # dig +short 11.1.108.198.combined.njalb.org
> 64.20.43.107
> 66.45.232.66
> 66.45.232.75
> 66.45.237.187
>
>
> I know of at least one ISP that is likely dropping mail from
> everyone...
> --
> "In the bathtub of history the truth is harder to hold than the soap,
>  and much more difficult to find."  -- Terry Pratchett
>



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