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DNS resolution works short of like this. (I am no DNS expert on how the
protocol works, but should be close.)
1. Your host goes to your primary DNS server.
2. If the name is not local to your DNS server, it looks up the root
servers, which replies with the address of an authoritative server for the
domain of the name.
3. Your DNS server goes to the DNS server responsible for the domain, and
resolves the IP address.
4. Your DNS server send the information back to your host.
Now, if you are resolving near names, say, all within China, then all is
O.K. because chances are, you have enough bandwidth within China, but
bandwidth can be tight going overseas. Should the communication between your
DNS server and the other DNS servers breaking up due to lost packets which
is due to congestion, your name resolution fails.
To remedy this, try to use a DNS server located in the USA as your secondary
DNS server. May be some of your friends here can provide a IP address for
you?
If you have DNS server setup locally, you may try nslookup for more
information.
Henry Ngai
----- Original Message -----
From: perly <perly 21cn com>
To: <redhat-install-list redhat com>
Sent: Friday, September 10, 1999 1:07 AM
Subject: Re: something wrong with DNS
> First,Thank you for help!
> I say "near" not means on my local hosts table.I can access websites in
our province and some
> in other provinces .But some wetsites in other province and all wetsites
in the world outside our country refuse my requst.That's why? I can't
understand.
>
>
> ----- Original Message -----
> From: Henry Ngai <hngai neec-usa com>
> To: <redhat-install-list redhat com>
> Sent: Friday, September 10, 1999 11:47 AM
> Subject: Re: something wrong with DNS
>
>
> > Perly,
> >
> > First, don't use html from Windows to send email. Use plain text. Many
> > people don't read it.
> >
> > How near is near and how far is far? If near means host on your local
hosts
> > table, and far means all others not on your local hosts table. Then you
did
> > not setup your system to do resolution using a DNS server.
> >
> > Henry Ngai
> >
> >
> > ----- Original Message -----
> > From: perly
> > To: redhat-install-list redhat com
> > Sent: Thursday, September 09, 1999 7:48 PM
> > Subject: something wrong with DNS
> >
> >
> > I install Slackware 3.6 and it works well.But when i use
> > netscape 4.5 to visit,websites near me can be connected,
> > websites far away from me can't be connected.It always appears an
> > error:"Netscape is unable to locate the server
> > xxxxxx.xxxx.xxx.The server does not have a DNS entry, check the server
name
> > in the Location(URL) and try again.
> >
> >
> > --
> > PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST
ARCHIVES!
> > http://www.redhat.com http://archive.redhat.com
> > To unsubscribe: mail redhat-install-list-request redhat com
with
> > "unsubscribe" as the Subject.
> >
> ?¨®??-???¡®y?¨²¡äP??3?-?Zjwm¡?
> From apollo-list-request redhat com Fri Sep 10 01:21 PDT 1999
> Received: from lists.redhat.com (lists.redhat.com [199.183.24.247])
> by ix.netcorps.com (8.9.0/8.9.0) with SMTP id BAA04657
> for <hngai neec-usa com>; Fri, 10 Sep 1999 01:21:43 -0700 (PDT)
> Received: (qmail 25601 invoked by uid 501); 10 Sep 1999 08:16:39 -0000
> Resent-Date: 10 Sep 1999 08:16:39 -0000
> Resent-Cc: recipient list not shown: ;
> MBOX-Line: From apollo-list-request redhat com Fri Sep 10 04:16:39 1999
> Date: Fri, 10 Sep 1999 09:16:03 +0100
> From: "Thomas Ribbrock \(Design/DEG\)" <argathin gmx net>
> To: apollo-list redhat com
> Subject: Re: XFree 3.3.5-0.5.2 problems
> Message-Id: <19990910091603 A15946 dsun178 adbvdesign analog com>
> References: <19990909143728 B8181 lightstream net>
<19990909174429 A30564 lightstream net>
> Mime-Version: 1.0
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> In-Reply-To: <19990909174429 A30564 lightstream net>
> Resent-Message-ID: <"40niB2.0.nF6.dvBst"@lists.redhat.com>
> Resent-From: apollo-list redhat com
> Reply-To: apollo-list redhat com
> X-Mailing-List: <apollo-list redhat com> archive/latest/5017
> X-Loop: apollo-list redhat com
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> Content-Type: text/plain; charset=us-ascii
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>
> On Thu, Sep 09, 1999 at 05:44:29PM -0400, Jon wrote:
> [...]
> > It turns out I was right.. after banging away on this all day trying to
> > get a new version of PAM and initscripts installed, I tried a last ditch
> > at searching http://www.deja.com again... what do you know, I came
across
> > this freshly posted tidbit, credit goes to Preston Brown over at RedHat:
> [...]
>
> Yup, he actually posted it to redhat-list yesterday. Maybe we should
> ask him to copy apollo-list as well on important things like this?
> I'd expect that many people are supscribed to apollo-list only, as
> redhat-list is *really* hight traffic.
>
> Thomas
> --
> "Look, Ma, no obsolete quotes and plain text only!"
>
> Thomas Ribbrock | http://www.bigfoot.com/~kaytan | ICQ#: 15839919
> "You have to live on the edge of reality - to make your dreams come
true!"
>
>
> --
> PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES!
> http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips
/mailing-lists
> To unsubscribe: mail apollo-list-request redhat com with
> "unsubscribe" as the Subject.
>
>
> From news fusion nww com Fri Sep 10 01:27 PDT 1999
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