Re: SPF = Sender Policy Framework (was: Microsoft spam solution<snip>)
From: Murray Watson (junkdtectr_at_adelphia.net)
Date: 09/20/04
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Date: 20 Sep 2004 09:40:38 -0700
Dave Uhring <daveuhring@yahoo.com> wrote in message news:<pan.2004.09.20.03.26.57.116887@yahoo.com>...
> On Sun, 19 Sep 2004 23:03:30 -0400, Murray Watson wrote:
>
> > In news.admin.net-abuse.email - article
> > <pan.2004.09.20.02.15.38.117238@yahoo.com>, on Sun, 19 Sep 2004
> > 21:15:42 -0500, Dave Uhring says...
> >> On Sun, 19 Sep 2004 21:56:51 -0400, Murray Watson wrote:
> >>
> >> > We've got to educate them on how to remove registered name servers.
> >>
> >> What does that mean?
> >
> > It's in this thread Message-ID: <16d694b9.0409131408.216e49c4@posting.google.com>
> >
> > http://groups.google.com/groups?&threadm=16d694b9.0409131408.216e49c4%40posting.google.com
>
> That does not answer the question about what a "registered name server"
> is. When I register a domain the technical information I provide is the
> domain name and the IP addresses or hostnames of the two name servers
> which are authoritative for that domain.
>
> What is a "registered name server" which you want removed?
"registered host" is more accurate, some call it a "registered
server". I'm not sure of any other uses for registered hosts other
than nameservers. I'm sure there are but it is predominantly used for
nameservers.
When your dns resolver looks-up hotmail.com to find the IP address for
hotmail's "www" server or it's mail server, it first looks to
root-servers.net to see who's responsibile for .com which is
gtld-servers.net.
gtld-servers.net is then queried to find the NS records (nameservers)
for hotmail.com. ns1.hotmail.com among others is returned, now the
resolver asks GTLD servers for the respective IP addresses for the
nameserver names returned by the prior query, how else will it know
the IP address of ns1.hotmail.com.
For the GTLD servers to function as a dns server of sorts for
hotmail.com to provide IP addresses of hotmail.com's dns servers,
hotmail.com must have registered specific hostnames and their
corresponding IP address as well as what the designated nameserver
names are for the domain hotmail.com. Hence the name "registered
host".
This setup works well for a hosting company like rackspace.com that
provides DNS for thousands of domains. If they change the IPs of
nameservers provided for their customers use, all they need to do is
change the IP address of the registered host. They won't have to do
anything on a per domain basis. junkdtectr.com will be pointing to
ns1.rackspace.com as it's nameserver.
That's my take on it anyway. Would someone please correct me if I've
got something wrong.
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