[98767] in North American Network Operators' Group
Re: Do I or RR need dns clue?
daemon@ATHENA.MIT.EDU (Robert Blayzor)
Thu Aug 16 23:57:43 2007
Date: Thu, 16 Aug 2007 22:18:16 -0400
From: Robert Blayzor <rblayzor@inoc.net>
To: "Tuc at T-B-O-H.NET" <ml@t-b-o-h.net>
CC: nanog@nanog.org
In-Reply-To: <200708161816.l7GIG1I6009297@himinbjorg.tucs-beachin-obx-house.com>
Errors-To: owner-nanog@merit.edu
Tuc at T-B-O-H.NET wrote:
> Down is there isn't power to it until it gets repaired. So its not
> answering period. A "nslookup" shows "timed-out". A "dig" shows
> "connection timed out; no servers could be reached" (When querying ONLY
> against the down server).
>
> So how do I go back to RR, who told me to take it out of my
> NS records, that DNS is supposed to be silently falling back and trying
> again?
The fact that they're rejecting on a 5xx error based on no DNS PTR is a
bit harsh. While I'm all for requiring all hosts to have valid PTR
records, there are times when transient or problem servers can cause a
DNS lookup failure or miss, etc. If anything they should be returning a
4xx to have the remote host"try again later".
--
Robert Blayzor
INOC
rblayzor@inoc.net
http://www.inoc.net/~rblayzor/
Earth is 98% full...please delete anyone you can.
