Updating dns pointers

Posted by / 11-Jan-2020 11:40

A Pointer (PTR) record resolves an IP address to a fully-qualified domain name (FQDN) as an opposite to what A record does. Here is what it looks like when performing external DNS lookup: mail servers and external mail servers (e.g.

Dedicated Web Server or Cloud Server) and the external server does not belong to Intermedia infrastructure, you need to create PTR record because it will help your server pass some security tests when connecting to other mail servers.

The client suddenly complained about their images and CSS/Javascript not loading on their website.Optionally, for machines that use IP aliasing or setups that wish to update both IPv4 and IPv6 addresses of an interface at the same time there will be an option .Contrary to IPA dynamic DNS update that generates the PTR record in the bind dyndb plugin, AD wouldn’t update the PTR record on its own when only A/AAAA record is updated.Their website was loading just fine for us and they ensured us they hadn’t made any recent changes.Upon inspecting their site with Chrome Devtools we could see that everything from their CDN subdomain (cdn.domain.com) were not loading correctly and reporting 404 errors.

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When you type into your address bar, DNS does the mapping for you behind the scenes. Just like caching on your Word Press site, DNS cache stores the IP addresses (or locations) you have recently visited locally on your computer.

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