[94322] in North American Network Operators' Group
Re: DNS Query Question
daemon@ATHENA.MIT.EDU (David Ulevitch)
Thu Jan 18 14:13:04 2007
Date: Thu, 18 Jan 2007 11:12:12 -0800
From: David Ulevitch <davidu@everydns.net>
To: Nanog <nanog@merit.edu>
In-Reply-To: <45AFB0C5.70107@thenose.net>
Errors-To: owner-nanog@merit.edu
Dennis Dayman wrote:
>
> I have a customer having some DNS issues. They have done some research
> regarding some DNS timeout errors they saw with Verizon's sender verify
> looking up their MX records. What they have discovered is their current
> DNS service has a 1% failure/timeout rate. They are exploring other
> vendors (UltraDNS for one), but need an estimate of the number of DNS
> queries for accurate pricing to put together a ROI argument for the
> switch.
>
> I have no IDEA if this can be determined, but what is a good estimate of
> the number of DNS queries generated from sending an email?
That's not a good tack to take to figure out the answer.
Just check the logs of your current DNS server and count 'em up.
UltraDNS isn't cheap. But neither is downtime, I suppose.
-david
