What is the DNS SPF record?

SPF means Sender Policy Framework. This DNS record is in itself a system that verifies legitimate emails. Furthermore, the SPF record identifies the mail servers authorized to send emails in your company’s name (domain). Therefore, it increases the trustability of your email server while preventing domain spoofing. Read more information about the SPF record!

TXT record: What is it?

TXT record is a DNS record type. It holds text information created for outer to the domain sources. The text can be written for people, so it would be easy to read, has full information, and is logically organized. In other cases, it can be made for computers and has a more technical format. Let’s explain more about the TXT record!

Linux MTR command explained

MTR command is a kind of traceroute command developed by Matt Kimball in 1997. It includes both traceroute and ping in the same software. First, the name MTR was an acronym of Matt’s traceroute, but in 1998, his colleague Roger Wolff worked on it also and transformed the name to My traceroute. Discover how to use the MTR command!

Host command meaning

The Host command is a tool with a command-line interface for Domain Name System lookups. You can practice it directly from the Terminal application because it is usually pre-installed on Linux-based and Unix-based OSes. Linux Host command can provide you a lot of information for the host, IP addresses, DNS records, and check name servers. Discover more about how to use the Host command!

DNS CAA record – meaning

The DNS CAA record serves domain name owners to take control over SSL certificates. Then, you can define which CA is authorized to issue them and also what kind of type of certificate. 

The DNS CAA record was first described in 2013. From September 2017, Certificate Authorities are required to review it before issuing any certificate. Read everything you know about the DNS CAA record!

What is the Traceroute command?

Traceroute is a built-in command. It has a command-line interface that you can practice within the Terminal application. In addition, it serves as a diagnostic tool most frequently used to trace a route from the computer, sending the traceroute request to an IP address or a hostname. Read more precise information about the Traceroute command!

What is the Dig command?

DIG is the short abbreviation of Domain Information Groper. It is software with a command-line interface for domain probing. The Dig command can make various DNS queries and receive information about different DNS records, such as A DNS record, AAAA, MX, SOA, NS, PTR, and more. Find out more information about the Dig command!

What is a DNS MX record?

The DNS MX record is one of the most common DNS records out there. If you don’t have one, you simply can’t be sure that you will receive any emails! This is because you want the DNS MX record to indicate to the rest of the servers on the Internet, which is precisely your mail server responsible for receiving emails for the particular domain. 

Read more about the purpose of the DNS MX record!

What does DNS mean?

Domain Name System (DNS) makes the Internet experience for humans as simple as it is today. Yet, the functionality which it provides is enormous. But to start, DNS has in its foundation the database with all existent domain names and the IP addresses that correspond to them. Learn additional information about the Domain Name System (DNS).