The Address (A) record associates a domain name or subdomain with an IP address, which is the primary purpose of the DNS system. The @ sign identifies "this domain;" for example, A @ nnn.nnn.nnn ...

Aging is a feature that allows identifying stale DNS records. It actually uses two intervals and a DNS record is considered as stale once both are elapsed. These intervals are: Non-Refresh ...

The Office 365 DNS Diagnostic Tool detects all the DNS records that are required by Office 365 services and identifies any known misconfigurations. In this post, we will describe the when and how ...