Forgot to add - I built the packet filter with both TCP and UDP. I found about a year ago that the sidewinder proxy was adding too much overhead and slowing the queries down.
In regards to the current problem, clearing cache (dnscmd /clearcache) or simply restarting the dns server service temporarily fixed the problem. Doesn't happen frequently - about once a month - but after the third time I've decided it's time to fix it. Kurt On Fri, Jan 27, 2012 at 16:47, Don Ely <[email protected]> wrote: > What kind of firewall do you have? Any DNS inspections going on? > > On Jan 27, 2012 4:29 PM, "Kurt Buff" <[email protected]> wrote: >> >> Once every few weeks we have problems resolving hilton.com and its >> subdomains - it's very annoying for our travel folks, and for me, >> because I have to drop everything and fix it by clearing DNS cache on >> our Win2k8 R2 DCs. >> >> It doesn't seem to affect our Win2k3 R2 DCs. >> >> Fix seems to be this: >> >> http://support.microsoft.com/kb/2508835 >> >> but I haven't applied it yet. >> >> We'll see if it works... >> >> Anyone done this, and had it fix the issue? Or make it worse? >> >> >> Kurt ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
