I just run dcdiag on my 1 of the Domain Controller (Windows 2008 R2) and test has failed with the following data.
As you can see Forwarders seems invalid because of they cannot be solved by my TMG 2010 server (IP 192.168.0.2)
Forwarders Information: 192.168.0.2 (<name unavailable>) [Invalid (unreachable)] Error: All forwarders in the forwarder list are invalid.
Other important point is my DC2 (Widnows 2008) not even appearing in this test! But all replications seems ok.
Running partition tests on : icd Test omitted by user request: CheckSDRefDom Test omitted by user request: CrossRefValidation Running enterprise tests on : icd.local Starting test: DNS Test results for domain controllers: DC: DC1.icd.local Domain: icd.local TEST: Authentication (Auth) Authentication test: Successfully completed TEST: Basic (Basc) The OS Microsoft Windows Server 2008 R2 Enterprise (Service Pack level: 1.0) is supported. NETLOGON service is running kdc service is running DNSCACHE service is running DNS service is running DC is a DNS server Network adapters information: Adapter [00000015] Microsoft Virtual Network Switch Adapter: MAC address is 00:1E:4F:20:AE:FE IP Address is static IP address: 192.168.0.40, fe80::acaf:2e9d:73b0:a137 DNS servers: 192.168.0.40 (DC1) [Valid] 192.168.0.41 (DC2003) [Valid] The A host record(s) for this DC was found The SOA record for the Active Directory zone was found The Active Directory zone on this DC/DNS server was found primary Root zone on this DC/DNS server was not found TEST: Forwarders/Root hints (Forw) Recursion is enabled Forwarders Information: 192.168.0.2 (<name unavailable>) [Invalid (unreachable)] Error: All forwarders in the forwarder list are invalid. Root hint Information: Name: a.root-servers.net. IP: 198.41.0.4 [Valid] Name: a.root-servers.net. IP: 2001:503:ba3e::2:30 [Invalid (unreachable)] Name: b.root-servers.net. IP: 192.228.79.201 [Valid] Name: c.root-servers.net. IP: 192.33.4.12 [Valid] Name: d.root-servers.net. IP: 128.8.10.90 [Valid] Name: d.root-servers.net. IP: 2001:500:2d::d [Invalid (unreachable)] Name: e.root-servers.net. IP: 192.203.230.10 [Valid] Name: f.root-servers.net. IP: 192.5.5.241 [Valid] Name: f.root-servers.net. IP: 2001:500:2f::f [Invalid (unreachable)] Name: g.root-servers.net. IP: 192.112.36.4 [Valid] Name: h.root-servers.net. IP: 128.63.2.53 [Valid] Name: h.root-servers.net. IP: 2001:500:1::803f:235 [Invalid (unreachable)] Name: i.root-servers.net. IP: 192.36.148.17 [Valid] Name: i.root-servers.net. IP: 2001:7fe::53 [Invalid (unreachable)] Name: j.root-servers.net. IP: 192.58.128.30 [Valid] Name: j.root-servers.net. IP: 2001:503:c27::2:30 [Invalid (unreachable)] Name: k.root-servers.net. IP: 193.0.14.129 [Valid] Name: k.root-servers.net. IP: 2001:7fd::1 [Invalid (unreachable)] Name: l.root-servers.net. IP: 199.7.83.42 [Valid] Name: l.root-servers.net. IP: 2001:500:3::42 [Invalid (unreachable)] Name: m.root-servers.net. IP: 2001:dc3::35 [Invalid (unreachable)] Name: m.root-servers.net. IP: 202.12.27.33 [Valid] TEST: Delegations (Del) Delegation information for the zone: icd.local. Delegated domain name: _msdcs.icd.local. Error: DNS server: DC2003.qld.icd.edu.au. IP:<Unavailable> [Missing glue A record] [Error details: 9714 (Type: Win32 - Description: DNS name does not exist.)] TEST: Dynamic update (Dyn) Test record dcdiag-test-record added successfully in zone icd.local Warning: Failed to delete the test record dcdiag-test-record in zone icd.local [Error details: 9005 (Type: Win32 - Description: DNS operation refused.)] TEST: Records registration (RReg) Network Adapter [00000015] Microsoft Virtual Network Switch Adapter: Matching CNAME record found at DNS server 192.168.0.40: 64e46f05-3760-4914-bd77-7f25e8626a7d._msdcs.icd.local Matching A record found at DNS server 192.168.0.40: DC1.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.6745f436-824a-4e46-aae6-0af01d54e2e6.domains._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _kerberos._tcp.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _kerberos._tcp.icd.local Matching SRV record found at DNS server 192.168.0.40: _kerberos._udp.icd.local Matching SRV record found at DNS server 192.168.0.40: _kpasswd._tcp.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.Default-First-Site-Name._sites.icd.local Matching SRV record found at DNS server 192.168.0.40: _kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _kerberos._tcp.Default-First-Site-Name._sites.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.gc._msdcs.icd.local Matching A record found at DNS server 192.168.0.40: gc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _gc._tcp.Default-First-Site-Name._sites.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.40: _ldap._tcp.pdc._msdcs.icd.local Matching CNAME record found at DNS server 192.168.0.41: 64e46f05-3760-4914-bd77-7f25e8626a7d._msdcs.icd.local Matching A record found at DNS server 192.168.0.41: DC1.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.6745f436-824a-4e46-aae6-0af01d54e2e6.domains._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _kerberos._tcp.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _kerberos._tcp.icd.local Matching SRV record found at DNS server 192.168.0.41: _kerberos._udp.icd.local Matching SRV record found at DNS server 192.168.0.41: _kpasswd._tcp.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.Default-First-Site-Name._sites.icd.local Matching SRV record found at DNS server 192.168.0.41: _kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _kerberos._tcp.Default-First-Site-Name._sites.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.gc._msdcs.icd.local Matching A record found at DNS server 192.168.0.41: gc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _gc._tcp.Default-First-Site-Name._sites.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.icd.local Matching SRV record found at DNS server 192.168.0.41: _ldap._tcp.pdc._msdcs.icd.local Summary of test results for DNS servers used by the above domain controllers: DNS server: 192.168.0.2 (<name unavailable>) 1 test failure on this DNS server PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.168.0.2 [Error details: 1460 (Typ e: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 2001:500:1::803f:235 (h.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:500:1::803f:235 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired .)] DNS server: 2001:500:2d::d (d.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:500:2d::d [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 2001:500:2f::f (f.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:500:2f::f [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 2001:500:3::42 (l.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:500:3::42 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 2001:503:ba3e::2:30 (a.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:503:ba3e::2:30 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired. )] DNS server: 2001:503:c27::2:30 (j.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:503:c27::2:30 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.) ] DNS server: 2001:7fd::1 (k.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:7fd::1 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 2001:7fe::53 (i.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:7fe::53 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 2001:dc3::35 (m.root-servers.net.) 1 test failure on this DNS server PTR record query for the 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa failed on the DNS server 20 01:dc3::35 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 128.63.2.53 (h.root-servers.net.) All tests passed on this DNS server DNS server: 128.8.10.90 (d.root-servers.net.) All tests passed on this DNS server DNS server: 192.112.36.4 (g.root-servers.net.) All tests passed on this DNS server DNS server: 192.168.0.40 (DC1) All tests passed on this DNS server Name resolution is functional._ldap._tcp SRV record for the forest root domain is registered DNS server: 192.168.0.41 (DC2003) All tests passed on this DNS server Name resolution is functional._ldap._tcp SRV record for the forest root domain is registered DNS server: 192.203.230.10 (e.root-servers.net.) All tests passed on this DNS server DNS server: 192.228.79.201 (b.root-servers.net.) All tests passed on this DNS server DNS server: 192.33.4.12 (c.root-servers.net.) All tests passed on this DNS server DNS server: 192.36.148.17 (i.root-servers.net.) All tests passed on this DNS server DNS server: 192.5.5.241 (f.root-servers.net.) All tests passed on this DNS server DNS server: 192.58.128.30 (j.root-servers.net.) All tests passed on this DNS server DNS server: 193.0.14.129 (k.root-servers.net.) All tests passed on this DNS server DNS server: 198.41.0.4 (a.root-servers.net.) All tests passed on this DNS server DNS server: 199.7.83.42 (l.root-servers.net.) All tests passed on this DNS server DNS server: 202.12.27.33 (m.root-servers.net.) All tests passed on this DNS server Summary of DNS test results: Auth Basc Forw Del Dyn RReg Ext _________________________________________________________________ Domain: icd.local DC1 PASS PASS FAIL FAIL WARN PASS n/a ......................... icd.local failed test DNS Test omitted by user request: LocatorCheck Test omitted by user request: Intersite C:\>