Mailgun SPF Setup

SPF (Sender Policy Framework) is an email authentication protocol that helps prevent unauthorized senders from sending emails on behalf of your domain. By verifying which servers are allowed to send email, SPF protects your domain from spoofing and phishing.

This guide will walk you through how to set up SPF for Mailgun, a transactional email service that enables secure and reliable email delivery at scale.

Mailgun SPF Requirements

Note: If you’re already using Sendmarc for SPF management, simply copy ‘include:mailgun.org’ and follow the steps here.

To authorize Mailgun to send emails on your domain’s behalf:

  1. Log in to your domain’s DNS dashboard.
  2. Go to the page where you can update the DNS settings on that domain.
  3. Check if a TXT record starting with v=spf1 already exists.
    • If it exists, modify the existing record to include Mailgun (details in the table below).
    • If not, create a new TXT record.

Example of an updated SPF record:

HostTypeValue
@ or blankTXTv=spf1 include:another.net include:mailgun.org ~all

Example of a new SPF record:

HostTypeValue
@ or blankTXTv=spf1 include:mailgun.org ~all
  1. Save your changes in the DNS control panel.

Allow up to 48 hours for DNS propagation, depending on your DNS host.

How to update your SPF settings using Sendmarc

For detailed instructions on how to update your SPF record through Sendmarc, refer to the Sendmarc SPF Setup Documentation. 

Mailgun’s Documentation

Refer to Mailgun’s official documentation for SPF setup here.

Looking for DKIM Settings?

Find out how to configure your Mailgun DKIM settings here.