Category: Records

DNS CAA record

The DNS CAA record was first defined in 2013, and from September 2017, Certificate Authorities are obliged to review it before issuing any certificate. So, let’s clarify things a little bit more about it.

DNS CAA record – Definition

The CAA (Certification Authority Authorization) record is a Resource Record in DNS (Domain Name System) that lets domain owners to specify which CAs are authorized to issue a certificate for the domain name. 

Certification Authorities (CAs) are organizations that are authorized and able to issue certificates for domain names, for instance, SSL, TLS, or other certificates.

How to create a CAA record?

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DKIM record

DKIM record explained.

Domain Keys Identified Mail for short DKIM record is a DNS record (TXT record) that is utilized to prove that the emails sent from the particular domain name are legitimate via cryptographic authentication.

The recipient, on the other hand, is also going to use the DKIM record when making the DNS query to the domain name for validating the sender. It is going to use the information in the header of the message.

The DKIM record includes the public key, which the recipient needs to confirm the message.

Once you wing an email with DKIM, you are going to attach a DKIM signature header and encrypt it. Then, the server sending the email signs the emails with its private key. After that, the recipients are going to unlock them with the public key. This process ensures that the messages are not going to be spoofed on the route. Additionally, they prove that they can be trusted.

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ALIAS record

We are going to explore one alternative to the CNAME record, which has many advantages – the ALIAS record. With it, you can have different DNS records in the same DNS zone and even put ALIAS records inside the root. Put ALIAS records where you can’t do it with CNAME records and manage your DNS easier. 

ALIAS record

The ALIAS record is one of the DNS record types which serves to connect one hostname to another. After that, it will resolve to A or AAAA record (an A to IPv4 address and an AAAA to IPv6 address) that already exists for the second hostname. ALIAS has the benefit of being allowed for the root domain, and you can put it in a DNS zone with other DNS records like MX records.

Benefits of using ALIAS DNS record

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