![]() ![]() Seems to be running normally, although I have noticed the occasional NPS EventID 4402 - "There is no domain controller available for domain applereit" error message on various machines. So the question is, what is the impact and how do I resolve this? Everything (don't think that became available until 2008 R2), while the new Server 2012 R2 domain controllers do. I'm only now noticing this error because the Server 2008 domain controller that I installed 5 years ago didn't have BPA Like it says in the picture, I have a feeling that GUID is from an old Server 2003 domain controller that we once had many years ago. When I look in DNS, under the domains._ container referenced in the BPA error message, I see only one container with a DNS/GUID alias which doesn't match any of the DNS Alias values for our existing domain controllers.īut inside of the _ container, I do see the CNAME entries mapping the DC GUIDs to our 3 domain controllers (see screenshot below): I followed the resolution ("Ensure that "DcByGuid" is not configured in the "DnsAvoidRegisteredRecords" list, either through Group Policy or through the registry.) and verified this is not set. All domain controllers (but not RODCs) in the domain must register "The "DcByGuid" DNS service (SRV) resource record that advertises this server as an available domain controller in the domain and ensures correct replication is not registered. When running Best Practices Analyzer on new DCs, I get the following error message: Select the Create Reverse Record check box if you want to have a reverse record automatically created for you.I have a Server 2008 domain controller that is about to be decommissioned and two new Server 2012 R2 domain controllers installed and running with all services and FSMO roles transferred to the new domain controllers.For Description, enter any text that best describes your host, e.g., Web server.This specification describes how DNS SRV records, DNS TXT records and well-known URIs can be used. For Type, select the record type identifier, e.g., A. Internet Calendar Scheduling Protocol (iSchedule).The window Create new Record is displayed.From the list, select Add New DNS Record to Zone.In the main window, right-click onto the zone entry for which the resource record must be created, e.g., (Primary) zone.Go to CONFIGURATION > Configuration Tree > Box > Assigned Services > DNS > DNS-Service.Verify that one of these records is already configured. ![]() Resource records must always be added to an existing zone, e.g., primary / reverse zone.The creation of DNS Resource Records is specified in RFC2136. For more information, see How to Assign Services. An SRV record maps the name of a service to the DNS name of a server that offers that service. Verify that all service IP addresses are already configured that are necessary for answering DNS queries on the respective incoming interfaces.In this example, it does not matter where the request originates from, and no redundant servers will be referred to. The example assumes that any client that requests to resolve a query for a web server in the domain will get a response for the IP address of that web server. This article describes how to create a resource record in its simplest form. TXT records can contain multiple values or extra long values with a length of more than 255 characters. Use this for services that do not have a DNS record type of their own, such as SPF. The TXT record associates a text string with the hostname. The SRV record contains information about which IP-based services are available within a domain, e.g., SIP, LDAP, FTP. The PTR record assigns an IP address to multiple hostnames and are used for reverse lookups. The OTHER record provides space for entering information for other DNS records not explicitly covered in the UI. The NS record defines which name server is responsible for a zone. The mail exchange record stores information about mail servers within the domain. The DNAME record delegates requests to a subzone to another domain. The CNAME record associates a canonical with an alias name. Each host in a domain should have an A record. Use the A / AAAA record to associate an IP address with a hostname. The available preset record types depend on the selected zone type! DNS Resource Record Type
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