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  • 22 Jul 2024

How do you set up SPF, DKIM, and DMARC records to enhance email security, prevent spoofing, and improve deliverability?”

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How to Set Up SPF, DKIM, and DMARC Records for Email Deliverability

Email deliverability is crucial for businesses relying on email communication to engage with customers, prospects, and partners. Setting up SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting & Conformance) records is essential for improving email deliverability and protecting your domain from phishing and spoofing attacks. This comprehensive guide will walk you through the steps to set up these records to ensure your emails reach the intended recipients’ inboxes.

To effectively integrate SPF, DKIM, and DMARC setup into the services offered by https://inboxautomation.co/,” it’s essential to streamline the process and communicate the benefits to clients. Here’s a strategic approach:

What Are SPF, DKIM, and DMARC?

Before diving into the setup process, it’s essential to understand what these records are and how they contribute to email authentication:

SPF (Sender Policy Framework)

SPF is an email authentication protocol that allows domain owners to specify which mail servers are permitted to send email on behalf of their domain. This helps prevent unauthorized sources from sending emails that appear to come from your domain.

DKIM (DomainKeys Identified Mail)

DKIM adds a digital signature to your email headers. The recipient’s mail server verifies this signature to ensure the email was not altered during transit and came from your domain.

DMARC (Domain-based Message Authentication, Reporting & Conformance)

DMARC builds on SPF and DKIM by providing a way for domain owners to publish policies on handling emails that fail SPF or DKIM checks. DMARC also allows domain owners to receive reports on email authentication failures.

Step-by-Step Guide to Setting Up SPF, DKIM, and DMARC

1. Setting Up SPF Records

Step 1: Identify Authorized Mail Servers

First, identify all mail servers authorized to send email on behalf of your domain. This includes your own mail servers and any third-party services you use (e.g., email marketing platforms, CRM systems).

Step 2: Create an SPF Record

An SPF is a DNS TXT record specifying authorized mail servers. Here’s a basic example of an SPF record:

makefileCopy codev=spf1 include:mail.example.com include:spf.thirdparty.com -all
  • v=spf1: Indicates the version of SPF being used.
  • include:mail.example.comAuthorizes the mail server at mail.example.com to send emails to your domain.
  • -all: Specifies that emails from unauthorized servers should be rejected.

Step 3: Add the SPF Record to Your DNS

Log in to your domain registrar or DNS hosting provider, navigate to the DNS management section, and add a new TXT record with the SPF configuration.

2. Setting Up DKIM Records

Step 1: Generate a DKIM Key Pair

Many email service providers (ESPs) provide tools to generate DKIM key pairs. The key pair consists of a private key (kept secure on your mail server) and a public key (published in your DNS).

Step 2: Publish the DKIM Public Key

The DKIM public key is published as a DNS TXT record. The record name typically includes a selector, a unique identifier for the key pair. Here’s an example:


  • selector: it with your actual selector.
  • v=DKIM1: Indicates the version of DKIM.
  • k=rsa: Specifies the key type (RSA).
  • p=...: Your public key.

Step 3: Configure Your Mail Server

Configure your mail server to sign outgoing emails using the DKIM private key. Refer to your mail server’s documentation for instructions on how to do this.

3. Setting Up DMARC Records

Step 1: Create a DMARC Record

A DMARC record is a DNS TXT record that specifies your DMARC policy. Here’s an example of a basic DMARC record:

cssCopy code_dmarc.example.com IN TXT "v=DMARC1; p=none; rua=mailto:dmarc-reports@example.com; ruf=mailto:dmarc-forensics@example.com; pct=100"

Implementation Steps

  • SPF Record Configuration: Guide clients through identifying all IP addresses for sending emails and creating an appropriate SPF record. Offer DNS management services to add or update SPF records directly.
  • DKIM Record Setup: Generate a DKIM key pair and help the client publish the public key as a DNS TXT record. Provide detailed instructions or direct support for configuring their email service to use the DKIM key.
  • DMARC Record Implementation: Assist clients in crafting a DMARC policy that reflects their security preferences and risk tolerance. Start with a monitoring policy (p=none) and plan to move to more protective settings based on the analysis of DMARC reports.
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