Ptr not updating records in dns
If there are missing entries, you likely have your DHCP missing one of two settings: This is required if you have DHCP installed on a Domain Controller.
It is an issue on Server 2000, 2003, 2008, 2008R2, Server 2012, Server 2012 R2 and will likely be an issue in the newer builds.
A CAA record isn't a substitute for the security requirements that are specified by your certificate authority, such as the requirement to validate that you're the owner of a domain.
You can use CAA records to specify the following: .
If you specify only one server, the priority can be any integer between 5.
If you specify multiple servers, the value that you specify for the priority indicates which email server you want email to be routed to first, second, and so on.
(We aren't aware of any CAs that support this option.) Settings for the record might be the following: Important The DNS protocol does not allow you to create a CNAME record for the top node of a DNS namespace, also known as the zone apex.Specify either a value for Regexp or a value for Replacement, but not both. For more information about valid values, see Sender Policy Framework, SPF Record Syntax.If you specify a value for Regexp, specify a dot (.) for Replacement. Example for the Amazon Route 53 console element consists of four space-separated values.The domain name can include a-z, 0-9, and - (hyphen). The first three values are decimal numbers representing priority, weight, and port. For information about SRV record format, refer to the applicable documentation. When you use the simple routing policy, include all values for a domain (example.com) or subdomain ( in the same TXT record.This page explains the key concepts of domains, DNS zones, and DNS records and record sets, and how they are supported in Azure DNS. The hierarchy starts from the 'root' domain, whose name is simply '.'.
To authorize a CA to issue a wildcard certificate for a domain or subdomain, create a record that has the same name as the domain or subdomain, and specify the following settings.