From: /dev/rob0 (rob0gmx.co.uk)
Date: Sat Apr 05 2008 - 00:49:41 CDT

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On Fri April 4 2008 20:02:50 Bill Cole wrote:
> >Although I don't intentionally use Comcast's nameservers, it's quite
> >possible that they have transparently proxied DNS traffic.
>
> That would be a spectacularly evil thing to do.
>
> It seems within the realm of possibility (and far less evil) that
> Spamhaus has filtered all of Comcast's residential space from being
> able to query their servers, given the prevalence of zombies in that
> space.

You are of course correct, and there was even a clue in my post: I
fixed my issue by forwarding queries to my own remote servers. One of
these is through a VPN, but the others are reached using port 53, and
all are tested, answering my queries from there.

I am, however, familiar with at least one ISP that redirects DNS
traffic to its own servers: HughesNet home satellite. I bet it was a
matter of incompetence rather than malice; it's difficult to make a
laggy satellite connection work like ADSL or cable.
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