A TXT (Text) Record is a type of DNS record used to store text information in a domain's DNS settings. Think of it as a public notepad attached to your domain name, where you can leave notes that other systems on the internet can read. Unlike A records that point to IP addresses, TXT records contain human-readable or machine-readable text.

These records serve several critical purposes for domain and email security:

• Email Authentication: They help prevent email spoofing and phishing by verifying sender identity. Common standards include:
  • SPF (Sender Policy Framework) - Lists servers allowed to send email for your domain.
  • DKIM (DomainKeys Identified Mail) - Adds a digital signature to outgoing emails.
  • DMARC (Domain-based Message Authentication) - Tells receiving servers how to handle unauthenticated emails.
• Domain Verification: Many services (like Google Workspace or SSL certificate providers) require you to add a specific TXT record to prove you own the domain.
• General Information: They can hold any arbitrary text notes for administrative purposes.

To add or modify a TXT record, you typically access your domain's DNS management panel through your hosting provider or registrar. The record has two main parts: a Name/Host (often "@" for the root domain or a subdomain like "mail") and a Value (the actual text string). Changes can take from a few minutes to 48 hours to propagate globally due to DNS caching.

In summary, while invisible to regular website visitors, TXT records are essential infrastructure tools that enhance security, verify ownership, and enable trusted communication for your domain.