I've been researching the following 5773 event:
The following DNS server that is authoritative for the DNS domain controller locator records of this domain controller does not support dynamic DNS updates:
DNS server IP address: 58.216.26.231
Returned Response Code (RCODE): 4
Returned Status Code: 9004
USER ACTION
Configure the DNS server to allow dynamic DNS updates or manually add the DNS records from the file '%SystemRoot%\System32\Config\Netlogon.dns' to the DNS database.
Based on my reading, this would occur if the IP address (58.216.26.231) was set as a DNS server on the servers NIC. Unfortunately, this isn't the case (see ipconfig /all below). What's more confusing is that we have absolutely no idea from where is address came. It does not resemble any internal or external IP address with which we work. This address has never been part of this network and doesn't appear anywhere in DNS. Given this, we have no idea what is causing this error or it's source.
Windows IP Configuration
Host Name . . . . . . . . . . . . : FEBVPCS
Primary Dns Suffix . . . . . . . : fareast.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : fareast.com
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #43
Physical Address. . . . . . . . . : 00-19-B9-D6-9C-C1
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2601:346:304:f00:b140:ccab:9d5:897b(Preferred)
IPv6 Address. . . . . . . . . . . : 2601:346:304:f00:d369:d389:581b:5383(Preferred)
Lease Obtained. . . . . . . . . . : Thursday, April 7, 2016 7:22:33 AM
Lease Expires . . . . . . . . . . : Monday, April 11, 2016 6:48:57 AM
Link-local IPv6 Address . . . . . : fe80::b140:ccab:9d5:897b%12(Preferred)
IPv4 Address. . . . . . . . . . . : 100.100.100.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : fe80::ba9b:c9ff:fed6:36a6%12
100.100.100.153
DHCPv6 IAID . . . . . . . . . . . : 301996473
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1E-7C-B3-E6-00-19-B9-D6-9C-C1
DNS Servers . . . . . . . . . . . : 2001:558:feed::1
2001:558:feed::2
100.100.100.2
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter isatap.{8C6E8FA4-3FA6-4FDF-BC4F-25BCE97B5F92}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Teredo Tunneling Pseudo-Interface:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes