Also take a look at this: "Server Failure" error message and DNS name resolution of external websites fails on a DNS server that is running Windows Server 2008 R2
http://support.microsoft.com/kb/2648326/ Cheers, Phil -- Phil Randal Infrastructure Engineer Hoople Ltd | Thorn Office Centre | Hereford HR2 6JT Tel: 01432 260415 | Email: [email protected] From: Jimmy Tran [mailto:[email protected]] Sent: 26 April 2012 03:32 To: NT System Admin Issues Subject: RE: Server 2008 R2 and SBS 2011 DNS cache problems I will to look at the firewall and router to see if that DNS packet size can be changed. Is this even possible? Please excuse my ignorance. I did check my Netgear router at home and it's a no go so it looks like I'll be disabling EDNS at home. From: Webster [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Wednesday, April 25, 2012 3:19 PM To: NT System Admin Issues Subject: RE: Server 2008 R2 and SBS 2011 DNS cache problems Mark Minasi will strongly disagree with you. In his AD classes he says disabling EDNS is the wrong thing to do. Fix your router and or firewall and let EDNS do its thing. Carl Webster Consultant and Citrix Technology Professional http://www.CarlWebster.com<http://www.carlwebster.com/> From: Jimmy Tran [mailto:[email protected]]<mailto:[mailto:[email protected]]> Subject: Server 2008 R2 and SBS 2011 DNS cache problems At the office I've been noticing a log of "bad packets" on my DNS server with the error 5501, The DNS server encountered a bad packet from 2.22.230.194. Packet processing leads beyond packet length. The event data contains the DNS packet.. When this happens, the page I'm trying to visit looks to be broken or have some styling issues. When I clear the DNS cache, it works properly again. This also happens on my home SBS 2011 machine. Visits to Dell, Skype and GoDaddy constantly have this problem. I finally decided to do some research and it looks to be an issue with EDns. I'm not sure if anyone else has experienced this issue but here is the fix. I just thought I would share what I learned today. Open command prompt as administrator and run "dnscmd /config /EnableEDNSProbes 0". This instantly fixed my Web/DNS problems. Here is the link to the article I found: http://weblogs.asp.net/owscott/archive/2009/09/15/windows-server-2008-r2-dns-issues.aspx ~ 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]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ 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]<mailto:[email protected]> with the body: unsubscribe ntsysadmin "Any opinion expressed in this e-mail or any attached files are those of the individual and not necessarily those of Hoople Ltd. You should be aware that Hoople Ltd. monitors its email service. This e-mail and any attached files are confidential and intended solely for the use of the addressee. This communication may contain material protected by law from being passed on. If you are not the intended recipient and have received this e-mail in error, you are advised that any use, dissemination, forwarding, printing or copying of this e-mail is strictly prohibited. If you have received this e-mail in error please contact the sender immediately and destroy all copies of it. ~ 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
