Re: [leaf-user] ISP and DNS issues

[George Metz]

Honestly, you should probably NOT be using the root servers. They're in 
general designed to provide updates to other DNS servers on the net, and 
in the case of on-network resources that may not have a publically 
routable IP address, going to the root server is going to give you an IP 
address that you wouldn't be able to reach anyhow due to the way NAT 
works. Additionally, the root servers don't necessarily know of 
variations that allow you to access servers on your ISP's network that 
are set up in an area you can get to easily.

All in all, you're just probably going to run into more problems using 
those root servers than you ever would by using your ISP's designated 
DNS server.

John Wittenberg wrote:

Thank you all for your valuable time.

Well, I managed to get things working despite my ISP.  I changed 
dnscache to forward my ISPs DNS instead of using the root servers, per 
http://leaf.sourceforge.net/devel/jnilo/dnscache3.html#AEN113.  Now I'm 
able to resolve my mail server, mail.bllvwa.cablespeed.com correctly.  
When I had tried to ping the mail server from XP and failed, this was 
the error message :  Ping request could not find host 
mail.bllvwa.cablespeed.com. Please check the name and try again.

At the moment I'll probably leave well enough alone, but what real 
problems am I going to have by not using the root name servers and 
sticking with the ISP name servers?  As this exercise shows, one benefit 
could be that no matter how bad my ISP messes up the name records, I'll 
always be able to find it.

Thanks again,

John

(Snipped Excess)

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