DNS problem, clients have to refresh browser in order to access valid URL's
Hello, I'm running Windows SBS 2003 and I think I've narrowed down a problem to a particular DNS server. If I have my laptop configured to use my Windows domain controller as its DNS server, my browser will intermittently give me errors for valid URLs claiming that the page cannot be found. If I hit the refresh button, the page then loads. I have seen this behavior on other clients using the same DNS server. The broken DNS server is configured as a forwader, it's using my ISP's DNS servers for queries. I see this behavior in both Firefox and Internet Explorer. If I use a different DNS server, the problem goes away. This working DNS server is also a forwarder with the same ISP and DNS servers as the broken DNS server. I turned on DNS logging on the problem DNS server and noticed that whenever this problem occurs on a client, there is an entry like this: 20100517 14:04:02 1DE0 PACKET 01F76480 UDP Snd 10.10.8.152 0968 R Q [8381 DR NXDOMAIN] A (10)www(7)google(15)com(0) It seems that my DNS server thinks there is no domain www.google.com for some reason. What's more is that the browser immediately shows the error, this is not a timeout. I've also noticed that at times some pages will only partially load, the formatting might be missing, it's as if some of the links on the page itself are also broken. Since the problem is intermittent, I can't reproduce it at will but it will happen about 5 or 6 times in the course of a day. Any help in troubleshooting further would be greatly appreciated... thanks
May 17th, 2010 4:11pm

Hello, is the SBS also DNS server or what machine is used for DNS server, Microsoft DNS or another one?Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
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May 17th, 2010 4:13pm

The broken DNS server is an installation of Windows SBS 2003, it is using Microsoft DNS. The same is true of the server that works correctly.
May 17th, 2010 4:37pm

Hello, how do you realize that it is broken? Do you have errors in the event viewer? Please post an unedited ipconfig /all from the SBS and the other DNS server. Is the second DNS server also DC and what kind of zone is configured on it?Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
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May 17th, 2010 4:41pm

Hello, I have no errors in the event log of the server nor the clients unfortunately. The reason I say this one server's DNS is broken is that I see the error only when I configure clients to use this server for DNS. The second DNS server is also a DC configured with an Active Directory Integrated zone. Ipconfig below: Broken DNS server: Windows IP Configuration Host Name . . . . . . . . . . . . : apollo Primary Dns Suffix . . . . . . . : gladstonellc.com Node Type . . . . . . . . . . . . : Unknown IP Routing Enabled. . . . . . . . : Yes WINS Proxy Enabled. . . . . . . . : Yes DNS Suffix Search List. . . . . . : gladstonellc.com PPP adapter RAS Server (Dial In) Interface: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface Physical Address. . . . . . . . . : 00-53-45-00-00-00 DHCP Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 10.10.8.210 Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : NetBIOS over Tcpip. . . . . . . . : Disabled Ethernet adapter Server Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) PRO/1000 XT Network Connection Physical Address. . . . . . . . . : 00-06-5B-FD-BD-8E DHCP Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 10.10.8.10 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.10.8.2 DNS Servers . . . . . . . . . . . : 10.10.8.10 Primary WINS Server . . . . . . . : 10.10.8.10 Working DNS server: Windows IP Configuration Host Name . . . . . . . . . . . . : alfa Primary Dns Suffix . . . . . . . : stonewell.pl Node Type . . . . . . . . . . . . : Unknown IP Routing Enabled. . . . . . . . : Yes WINS Proxy Enabled. . . . . . . . : Yes DNS Suffix Search List. . . . . . : stonewell.pl Ethernet adapter Server Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) PRO/1000 CT Network Connection Physical Address. . . . . . . . . : 00-C0-9F-4C-28-38 DHCP Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 10.10.9.30 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.10.9.2 DNS Servers . . . . . . . . . . . : 10.10.9.30 Primary WINS Server . . . . . . . : 10.10.9.30
May 17th, 2010 5:19pm

Hello, you use 2 different domains with different subnets? So the workstation is member of the gladstonellc.com domain please make sure it is listed in the DNS forward/reverse lookup zones. If the SBS doesn't have the need for remote access remove RRAS and WINS proxy from it. On the gladstonellc.com DC run dcdiag /v and dcdiag /test:dns and post the output here. Also post an unedited ipconfig /all from the client you are using. Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
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May 18th, 2010 3:54pm

Hello again, Yes, I have two different domains with two different subnets. My laptop is in the gladstonellc.com domain, however, I did not see an A record nor a PTR record for it on the DNS server for gladstonellc.com. I will put them in manually. I need the RRAS so I'll leave that for now. Output from commands below: dcdiag /v from DNS server: Domain Controller Diagnosis Performing initial setup: * Verifying that the local machine apollo, is a DC. * Connecting to directory service on server apollo. * Collecting site info. * Identifying all servers. * Identifying all NC cross-refs. * Found 1 DC(s). Testing 1 of them. Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\APOLLO Starting test: Connectivity * Active Directory LDAP Services Check * Active Directory RPC Services Check ......................... APOLLO passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\APOLLO Starting test: Replications * Replications Check * Replication Latency Check * Replication Site Latency Check ......................... APOLLO passed test Replications Test omitted by user request: Topology Test omitted by user request: CutoffServers Starting test: NCSecDesc * Security Permissions check for all NC's on DC APOLLO. * Security Permissions Check for DC=ForestDnsZones,DC=gladstonellc,DC=com (NDNC,Version 2) * Security Permissions Check for DC=DomainDnsZones,DC=gladstonellc,DC=com (NDNC,Version 2) * Security Permissions Check for CN=Schema,CN=Configuration,DC=gladstonellc,DC=com (Schema,Version 2) * Security Permissions Check for CN=Configuration,DC=gladstonellc,DC=com (Configuration,Version 2) * Security Permissions Check for DC=gladstonellc,DC=com (Domain,Version 2) ......................... APOLLO passed test NCSecDesc Starting test: NetLogons * Network Logons Privileges Check Verified share \\APOLLO\netlogon Verified share \\APOLLO\sysvol ......................... APOLLO passed test NetLogons Starting test: Advertising The DC APOLLO is advertising itself as a DC and having a DS. The DC APOLLO is advertising as an LDAP server The DC APOLLO is advertising as having a writeable directory The DC APOLLO is advertising as a Key Distribution Center Warning: APOLLO is not advertising as a time server. The DS APOLLO is advertising as a GC. ......................... APOLLO failed test Advertising Starting test: KnowsOfRoleHolders Role Schema Owner = CN=NTDS Settings,CN=APOLLO,CN=Servers,CN=Default-Fi rst-Site-Name,CN=Sites,CN=Configuration,DC=gladstonellc,DC=com Role Domain Owner = CN=NTDS Settings,CN=APOLLO,CN=Servers,CN=Default-Fi rst-Site-Name,CN=Sites,CN=Configuration,DC=gladstonellc,DC=com Role PDC Owner = CN=NTDS Settings,CN=APOLLO,CN=Servers,CN=Default-First -Site-Name,CN=Sites,CN=Configuration,DC=gladstonellc,DC=com Role Rid Owner = CN=NTDS Settings,CN=APOLLO,CN=Servers,CN=Default-First -Site-Name,CN=Sites,CN=Configuration,DC=gladstonellc,DC=com Role Infrastructure Update Owner = CN=NTDS Settings,CN=APOLLO,CN=Server s,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=gladstonellc,DC=com ......................... APOLLO passed test KnowsOfRoleHolders Starting test: RidManager * Available RID Pool for the Domain is 1609 to 1073741823 * apollo.gladstonellc.com is the RID Master * DsBind with RID Master was successful * rIDAllocationPool is 1109 to 1608 * rIDPreviousAllocationPool is 1109 to 1608 * rIDNextRID: 1200 ......................... APOLLO passed test RidManager Starting test: MachineAccount Checking machine account for DC APOLLO on DC APOLLO. * SPN found :LDAP/apollo.gladstonellc.com/gladstonellc.com * SPN found :LDAP/apollo.gladstonellc.com * SPN found :LDAP/APOLLO * SPN found :LDAP/apollo.gladstonellc.com/GLADSTONELLC * SPN found :LDAP/4df2b08c-14ce-43a0-8643-53ef03a4a755._msdcs.gladstone llc.com * SPN found :E3514235-4B06-11D1-AB04-00C04FC2DCD2/4df2b08c-14ce-43a0-86 43-53ef03a4a755/gladstonellc.com * SPN found :HOST/apollo.gladstonellc.com/gladstonellc.com * SPN found :HOST/apollo.gladstonellc.com * SPN found :HOST/APOLLO * SPN found :HOST/apollo.gladstonellc.com/GLADSTONELLC * SPN found :GC/apollo.gladstonellc.com/gladstonellc.com ......................... APOLLO passed test MachineAccount Starting test: Services * Checking Service: Dnscache * Checking Service: NtFrs * Checking Service: IsmServ IsmServ Service is stopped on [APOLLO] * Checking Service: kdc * Checking Service: SamSs * Checking Service: LanmanServer * Checking Service: LanmanWorkstation * Checking Service: RpcSs * Checking Service: w32time w32time Service is stopped on [APOLLO] * Checking Service: NETLOGON ......................... APOLLO failed test Services Test omitted by user request: OutboundSecureChannels Starting test: ObjectsReplicated APOLLO is in domain DC=gladstonellc,DC=com Checking for CN=APOLLO,OU=Domain Controllers,DC=gladstonellc,DC=com in domain DC=gladstonellc,DC=com on 1 servers Object is up-to-date on all servers. Checking for CN=NTDS Settings,CN=APOLLO,CN=Servers,CN=Default-First-Sit e-Name,CN=Sites,CN=Configuration,DC=gladstonellc,DC=com in domain CN=Configurati on,DC=gladstonellc,DC=com on 1 servers Object is up-to-date on all servers. ......................... APOLLO passed test ObjectsReplicated Starting test: frssysvol * The File Replication Service SYSVOL ready test File Replication Service's SYSVOL is ready ......................... APOLLO passed test frssysvol Starting test: frsevent * The File Replication Service Event log test ......................... APOLLO passed test frsevent Starting test: kccevent * The KCC Event log test Found no KCC errors in Directory Service Event log in the last 15 minut es. ......................... APOLLO passed test kccevent Starting test: systemlog * The System Event log test An Error Event occured. EventID: 0x80001778 Time Generated: 05/24/2010 08:29:17 Event String: The previous system shutdown at 02:18:15 on 2010-05-24 was unexpected. An Error Event occured. EventID: 0x000004E6 Time Generated: 05/24/2010 08:30:44 (Event String could not be retrieved) An Error Event occured. EventID: 0x00000457 Time Generated: 05/24/2010 08:52:33 (Event String could not be retrieved) An Error Event occured. EventID: 0x00000457 Time Generated: 05/24/2010 08:52:34 (Event String could not be retrieved) An Error Event occured. EventID: 0x00000457 Time Generated: 05/24/2010 08:52:48 (Event String could not be retrieved) An Error Event occured. EventID: 0x00000457 Time Generated: 05/24/2010 08:52:50 (Event String could not be retrieved) An Error Event occured. EventID: 0x00000457 Time Generated: 05/24/2010 08:52:54 (Event String could not be retrieved) An Error Event occured. EventID: 0x00000457 Time Generated: 05/24/2010 08:52:55 (Event String could not be retrieved) ......................... APOLLO failed test systemlog Test omitted by user request: VerifyReplicas Starting test: VerifyReferences The system object reference (serverReference) CN=APOLLO,OU=Domain Controllers,DC=gladstonellc,DC=com and backlink on CN=APOLLO,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configurati on,DC=gladstonellc,DC=com are correct. The system object reference (frsComputerReferenceBL) CN=APOLLO,CN=Domain System Volume (SYSVOL share),CN=File Replication Se rvice,CN=System,DC=gladstonellc,DC=com and backlink on CN=APOLLO,OU=Domain Controllers,DC=gladstonellc,DC=com are correct. The system object reference (serverReferenceBL) CN=APOLLO,CN=Domain System Volume (SYSVOL share),CN=File Replication Se rvice,CN=System,DC=gladstonellc,DC=com and backlink on CN=NTDS Settings,CN=APOLLO,CN=Servers,CN=Default-First-Site-Name,CN=Sit es,CN=Configuration,DC=gladstonellc,DC=com are correct. ......................... APOLLO passed test VerifyReferences Test omitted by user request: VerifyEnterpriseReferences Test omitted by user request: CheckSecurityError Running partition tests on : ForestDnsZones Starting test: CrossRefValidation ......................... ForestDnsZones passed test CrossRefValidation Starting test: CheckSDRefDom ......................... ForestDnsZones passed test CheckSDRefDom Running partition tests on : DomainDnsZones Starting test: CrossRefValidation ......................... DomainDnsZones passed test CrossRefValidation Starting test: CheckSDRefDom ......................... DomainDnsZones passed test CheckSDRefDom Running partition tests on : Schema Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Starting test: CheckSDRefDom ......................... Schema passed test CheckSDRefDom Running partition tests on : Configuration Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Starting test: CheckSDRefDom ......................... Configuration passed test CheckSDRefDom Running partition tests on : gladstonellc Starting test: CrossRefValidation ......................... gladstonellc passed test CrossRefValidation Starting test: CheckSDRefDom ......................... gladstonellc passed test CheckSDRefDom Running enterprise tests on : gladstonellc.com Starting test: Intersite Skipping site Default-First-Site-Name, this site is outside the scope provided by the command line arguments provided. ......................... gladstonellc.com passed test Intersite Starting test: FsmoCheck GC Name: \\apollo.gladstonellc.com Locator Flags: 0xe00001bd PDC Name: \\apollo.gladstonellc.com Locator Flags: 0xe00001bd Warning: DcGetDcName(TIME_SERVER) call failed, error 1355 A Time Server could not be located. The server holding the PDC role is down. Warning: DcGetDcName(GOOD_TIME_SERVER_PREFERRED) call failed, error 135 5 A Good Time Server could not be located. KDC Name: \\apollo.gladstonellc.com Locator Flags: 0xe00001bd ......................... gladstonellc.com failed test FsmoCheck Test omitted by user request: DNS Test omitted by user request: DNS dcdiag /test:dns Domain Controller Diagnosis Performing initial setup: Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\APOLLO Starting test: Connectivity ......................... APOLLO passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\APOLLO DNS Tests are running and not hung. Please wait a few minutes... Running partition tests on : ForestDnsZones Running partition tests on : DomainDnsZones Running partition tests on : Schema Running partition tests on : Configuration Running partition tests on : gladstonellc Running enterprise tests on : gladstonellc.com Starting test: DNS Test results for domain controllers: DC: apollo.gladstonellc.com Domain: gladstonellc.com TEST: Forwarders/Root hints (Forw) Error: Forwarders list has invalid forwarder: 94.124.16.14 (<name unavailable>) Summary of test results for DNS servers used by the above domain controllers: DNS server: 94.124.16.14 (<name unavailable>) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 94.124.16.14 Summary of DNS test results: Auth Basc Forw Del Dyn RReg Ext ________________________________________________________________ Domain: gladstonellc.com apollo PASS PASS FAIL PASS PASS PASS n/a ......................... gladstonellc.com failed test DNS ipconfig /all from my laptop: C:\Users\George>ipconfig /all159 Windows IP Configuration Host Name . . . . . . . . . . . . : GZ-LAPTOP Primary Dns Suffix . . . . . . . : gladstonellc.com Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : linksys.com linksys.com Wireless LAN adapter Wireless Network Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : gladstonellc.com Description . . . . . . . . . . . : Intel(R) WiFi Link 5100 AGN Physical Address. . . . . . . . . : 00-16-EA-D8-5B-86 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : gladstonellc.com Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller Physical Address. . . . . . . . . : 00-23-54-0E-FF-D3 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::1e6:2dbd:551:7f3b%8(Preferred) IPv4 Address. . . . . . . . . . . : 10.10.8.159(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Friday, May 14, 2010 08:45:18 Lease Expires . . . . . . . . . . : Saturday, May 29, 2010 13:06:21 Default Gateway . . . . . . . . . : 10.10.8.2 DHCP Server . . . . . . . . . . . : 10.10.8.10 DHCPv6 IAID . . . . . . . . . . . : 134226772 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-10-EB-CD-FB-00-23-54-0E-FF-C7 DNS Servers . . . . . . . . . . . : 10.10.8.10 Primary WINS Server . . . . . . . : 10.10.8.10 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter Local Area Connection* 7: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Tun Miniport Adapter Physical Address. . . . . . . . . : 02-00-54-55-4E-01 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:73ba:32:2eca:f5f5:f760(Prefer red) Link-local IPv6 Address . . . . . : fe80::32:2eca:f5f5:f760%27(Preferred) Default Gateway . . . . . . . . . : :: NetBIOS over Tcpip. . . . . . . . : Disabled Tunnel adapter Local Area Connection* 10: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : gladstonellc.com Description . . . . . . . . . . . : isatap.gladstonellc.com Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 17: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : 6TO4 Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes
May 24th, 2010 10:32am

Hello, if the workstation is member from gladstonellc.com make sure the DNS suffix search list is set accordingly and not for linksys.com. Control the time service "w32time: on the SBS machine and start it, must be set to automatic, if this doesn't start check event viewer for errors and solve them. If i see correct the 94.124.16.14 is configured as FORWARDER. Is this ip address used somewhere else? Did you make sure no firewall is blocking DNS port 53. Control that the 10.10.8.210 RRAS ip address isn't registered in the DNS zones.Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
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May 24th, 2010 11:16pm

Hello, The linksys.com was set on my wifi connection which I don't use but I went into the settings for the wifi connection and changed the DNS suffix to gladstonellc.com anyway. The Windows Time Services was disabled on the SBS machine, I set it to automatic and started it. 94.124.16.14 is one of two DNS servers given to me by our ISP. As far as I know it's not used anywhere else. There are no firewalls blocking DNS port 53 either. 10.10.8.210 does not appear anywhere in the DNS zones. One other thing I did was remove 94.124.16.14 from the list of forwarders. I am now waiting to see if anyone complains about getting the page not found error in their browsers. Here is the latest dcdiag /test:dns after the changes: Domain Controller Diagnosis Performing initial setup: Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\APOLLO Starting test: Connectivity ......................... APOLLO passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\APOLLO DNS Tests are running and not hung. Please wait a few minutes... Running partition tests on : ForestDnsZones Running partition tests on : DomainDnsZones Running partition tests on : Schema Running partition tests on : Configuration Running partition tests on : gladstonellc Running enterprise tests on : gladstonellc.com Starting test: DNS Test results for domain controllers: DC: apollo.gladstonellc.com Domain: gladstonellc.com TEST: Forwarders/Root hints (Forw) Error: Forwarders list has invalid forwarder: 94.124.16.10 (<n ame unavailable>) Error: Root hints list has invalid root hint server: a.root-se rvers.net. (198.41.0.4) Error: Root hints list has invalid root hint server: b.root-se rvers.net. (128.9.0.107) Error: Root hints list has invalid root hint server: c.root-se rvers.net. (192.33.4.12) Error: Root hints list has invalid root hint server: d.root-se rvers.net. (128.8.10.90) Error: Root hints list has invalid root hint server: e.root-se rvers.net. (192.203.230.10) Error: Root hints list has invalid root hint server: f.root-se rvers.net. (192.5.5.241) Error: Root hints list has invalid root hint server: g.root-se rvers.net. (192.112.36.4) Error: Root hints list has invalid root hint server: h.root-se rvers.net. (128.63.2.53) Error: Root hints list has invalid root hint server: i.root-se rvers.net. (192.36.148.17) Error: Root hints list has invalid root hint server: j.root-se rvers.net. (192.58.128.30) Error: Root hints list has invalid root hint server: k.root-se rvers.net. (193.0.14.129) Error: Root hints list has invalid root hint server: l.root-se rvers.net. (198.32.64.12) Error: Root hints list has invalid root hint server: m.root-se rvers.net. (202.12.27.33) Summary of test results for DNS servers used by the above domain contro llers: DNS server: 128.63.2.53 (h.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 128.63.2.53 DNS server: 128.8.10.90 (d.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 128.8.10.90 DNS server: 128.9.0.107 (b.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 128.9.0.107 DNS server: 192.112.36.4 (g.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 192.112.36.4 DNS server: 192.203.230.10 (e.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 192.203.230.10 DNS server: 192.33.4.12 (c.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 192.33.4.12 DNS server: 192.36.148.17 (i.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 192.36.148.17 DNS server: 192.5.5.241 (f.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 192.5.5.241 DNS server: 192.58.128.30 (j.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 192.58.128.30 DNS server: 193.0.14.129 (k.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 193.0.14.129 DNS server: 198.32.64.12 (l.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 198.32.64.12 DNS server: 198.41.0.4 (a.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 198.41.0.4 DNS server: 202.12.27.33 (m.root-servers.net.) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 202.12.27.33 DNS server: 94.124.16.10 (<name unavailable>) 1 test failure on this DNS server This is not a valid DNS server. PTR record query for the 1.0.0.12 7.in-addr.arpa. failed on the DNS server 94.124.16.10 Summary of DNS test results: Auth Basc Forw Del Dyn RReg Ext ________________________________________________________________ Domain: gladstonellc.com apollo PASS PASS FAIL PASS PASS PASS n/a ......................... gladstonellc.com failed test DNS Looks like now root servers are failing too as is the second DNS forwarder.
May 25th, 2010 11:33am

Hello, as the root servers aren't valid and you don't have th FORWARDERS set update the root server list, therefore start the DNS management console, open the DNS server properties and choose root hints tab, click "Copy from server" and enter the ip address 4.2.2.2 AFAIK the 4.2.2.2 is always up to date with root servers.Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
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May 25th, 2010 11:55am

Hello, OK I followed your instructions to get update the root server list. The results of my dcdiag test remain unchanged. However, I noticed that if I on the Forwarders tab I click the checkbox at the bottom, "Do not use recursion for this domain", the dcdiag shows no errors for the root servers, only for the single forwarder I have configured. I see the same behavior on the SBS server with the working DNS as well.
May 25th, 2010 12:02pm

I know this is slightly irrelevant, but I am a home computer repair technician, and I have had the same issue for years since moving to windows 7. About 1-2% of all web pages timeout instantly but load instantly once refresh is clicked, even for pages like google or whatsmyip.org. This issue has survived 3 new ~ $1400 computers, 4 ISP's, 9 modems, and 3 physical relocations, 1 interstate. Only common factor: windows 7, and ive tried ALL versions with same results. To be noted: some web pages are NEVER affected by this bug, such as speedtest.net, which is under CONSTANT 24 hour load...
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January 25th, 2012 12:55am

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