Round-Robin DNS

Round – Robin DNS explained

Round-Robin DNS is a simple mechanism for managing DNS load balancing. This task is not done through hardware but via a DNS server known as an authoritative nameserver.

When you deploy Round-Robin in a DNS server, this will save different A records. Each of them has different IP addresses, but all with the same domain name. Every time this DNS record is requested, it will deliver a response (IP address) by its order. And every IP address used to respond to a request will be put at the end of a line to be used again. You have multiple IP addresses working on a constant rotation cycle.

This mechanism is really useful if you have your website’s content hosted on different redundant servers located at separate points of the globe. The authoritative nameserver will use this rotation cycle to answer with a different IP address. By doing so, it will load balance the traffic.

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What is an SPF record?

What is an SPF record?

Emails from your company are very important and delicate stuff. They are part of your image, the trustability clients have on you, and therefore, an attractive tool for criminals to get profit through phishing and other illegal activities. Suspicious use of them can be painful for a business and a reason to be banned. 

SPF means Sender Policy Framework. This DNS record is in itself a system that validates legitimate emails. SPF record recognizes the mail servers allowed to send emails in your company’s name (domain). It enhances the trustability of your email server while preventing domain spoofing.

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