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Re: Follow up on DNS lookup problems.

From: Men & Mice Support
Date: Tuesday, November 2, 2004
Time: 3:18:06 pm

At 2:21 PM -0800 11/2/04, Jody McAlister wrote:
>Should I be concerned that...
>
>1. before I ran the commands you gave, the file said last updated in 1997.

No.

>2. That after I run the commands, the file doesn't have root
>servers Addresses listed, just their names.

Yes, that's a problem. (A colleague, reading my answer, reminded me
that not all name servers give a complete Additional section, nor
even any Additional records.)

Try this instead:

sudo -s
dig @a.root-servers.net > /var/named/conf/root.hint
exit

Chris Buxton
Men & Mice - Making DNS Easy
Customer Service and Sales Engineer

>On Nov 2, 2004, at 9:28 AM, Men & Mice Support wrote:
>>As long as at least some of the servers listed in your root hints
>>file are accurate, you don't need to worry about it. Once a week or
>>so, and every time it starts up, your server will get a current
>>list of root servers from whichever root servers it can find.
>>
>>In other words, the root hints file (the list of root servers in
>>the server's options window) is just used as servers to ask, when
>>the server first starts up, for the correct list of root servers.
>>
>>If you want to update the file, the simplest way is to use the dig
>>command, without options, and direct the output into the root.hint
>>file. For example, on Mac OS X:
>>
>>sudo -s
>>dig > /var/named/conf/root.hint
>>exit
>>
>>Chris Buxton
>>Men & Mice - Making DNS Easy
>>Customer Service and Sales Engineer
>>
>>At 10:14 AM -0800 11/2/04, Jody McAlister wrote:
>>>Besides making the -4 adjustment, do I need to also update my root
>>>servers list. If so, what do I need to do?
>>>
>>>I ask because the lists are also talking about two root servers
>>>being decommissioned.
>>
>>
>>
>Jody McAlister
>President
>In-Site Communications
>707-765-9993/800-998-1711




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