> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.mysmtp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS Setup for Authentication

> Learn why DNS configuration matters for email authentication and how SPF, DKIM, DMARC, and BIMI rely on DNS TXT records.

### **The Importance of DNS Setup for Email Authentication**

DNS (Domain Name System) plays a **crucial role** in email authentication, ensuring that your emails are **trusted, secure, and successfully delivered**. Without a proper DNS setup, your emails may be **flagged as spam, rejected, or even exploited by attackers**.

Here's why **DNS configuration** is essential for email authentication:

### **DNS as the Foundation of Email Authentication**

Email authentication methods--**SPF, DKIM, DMARC, and BIMI**--all rely on **DNS TXT records** to verify your email-sending identity. These records help **email providers identify legitimate senders and block malicious attempts** (e.g., phishing and spoofing attacks).


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.