Well, at least it's good to know that I'm not alone.

I think I'll set up a batch file to run a couple of days a week to
flush cache - that should be pretty benign.

Thanks,

Kurt

On Wed, Feb 8, 2012 at 11:31, Michael B. Smith <[email protected]> wrote:
> A number of people have reported the issue even after the hotfix, in other 
> forums. Some people are scripting DNS cache flushes and DNS Server restarts 
> in the off hours.
>
> Regards,
>
> Michael B. Smith
> Consultant and Exchange MVP
> http://TheEssentialExchange.com
>
>
> -----Original Message-----
> From: Kurt Buff [mailto:[email protected]]
> Sent: Wednesday, February 08, 2012 1:58 PM
> To: NT System Admin Issues
> Subject: DNS and KB2508835
>
> All,
>
> This article:
>
> http://support.microsoft.com/kb/2508835
>
> describes the problem fairly well.
>
> After a while, some web sites just won't resolve - for us, it's
> anything in the hilton.com domain and subdomains (perhaps others, but
> the travel folks always scream, and nobody else has yet, so I can't be
> sure).
>
> The only workaround is to either restart the DNS Server service on
> both of my DCs, or to clear cache on both.
>
> Unfortunately, the hotfix doesn't seem to work - I applied it to both
> DCs two weeks ago, and it just occurred again.
>
> Is anyone experiencing this problem?
>
> Also, the article above points to an article on DNS Cache Locking -
> I'm about ready to turn locking down or off, but wondered how severe
> others judge the threat of DNS cach poisoning to be.
>
> It's more an annoyance than anything critical, at this point, but I
> thought I'd explore it a bit.
>
> Thoughts?
>
> Kurt
>
> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~
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