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  • 22 Jul 2024

Setting up DMARC, DKIM, and SPF is essential for securing your email domain and improving email deliverability. These email authentication protocols help protect your domain from spoofing and phishing attacks. This guide will walk you through the steps to set up DMARC, DKIM, and SPF in Office 365.

What are DMARC, DKIM, and SPF?

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DMARC (Domain-based Message Authentication, Reporting, and Conformance): DMARC is an email authentication protocol that works with SPF and DKIM to determine the authenticity of an email message. It provides a way for domain owners to specify how their emails should be handled if they fail authentication checks and to receive reports on email activity.

DKIM (DomainKeys Identified Mail): DKIM adds a digital signature to emails, allowing the recipient’s server to verify that the email has not been altered during transit and confirming the sender’s identity.

SPF (Sender Policy Framework): SPF allows domain owners to specify which mail servers are permitted to send emails on behalf of their domain. It helps prevent unauthorized email senders (spoofers) from sending emails from your domain.

Step-by-Step Setup Guide

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Setting Up SPF in Office 365

  1. Access Your Domain’s DNS Settings:
    • Log in to your domain registrar’s account.
    • Navigate to the DNS management section.
  2. Add an SPF Record:
    • Look for an option to add a new DNS (TXT) record.
    • Add a TXT record with the following value: makefileCopy code.v=spf1 include:spf.protection.outlook.com -all
    • Save the changes.

Setting Up DKIM in Office 365

  1. Access the Office 365 Admin Center:
    • Log in to the Office 365 Admin Center (admin.microsoft.com).
  2. Go to the Exchange Admin Center:
    • Navigate to Admin centers > Exchange.
  3. Enable DKIM Signing:
    • In the Exchange admin center, go to protection > dkim.
    • Select your domain and click “Enable.”
  4. Add the DKIM CNAME Records to Your DNS:
    • On the DKIM page, click “Generate CNAMEs” to get the DKIM CNAME records.
    • Go to your domain registrar’s DNS management section.
    • Add the provided CNAME records.
    • Save the changes.

Setting Up DMARC in Office 365

  1. Create a DMARC Record:
    • Go to your domain’s DNS settings to add a new TXT record.
    • In the “Name” or “Host” field, enter. _dmarc.
  2. Add the DMARC Policy:
    • In the “Value” field, enter the DMARC policy. For example, copy codev=DMARC1; p=none; rua=mailto:dmarc-reports@yourdomain.com; ruf=mailto:dmarc-forensics@yourdomain.com; pct=100;
      • v=DMARC1: Specifies the DMARC version.
      • p=none: No action is taken, just monitoring.
      • rua: Aggregate reports email address.
      • ruf: Forensic reports email address.
      • pct=100: Apply the policy to 100% of emails.

Conclusion

Implementing DMARC, DKIM, and SPF in Office 365 is vital for securing your email domain and improving email deliverability. Following this guide can protect your domain from spoofing attacks and ensure your emails reach recipients’ inboxes.

For more information on email authentication and security, visit Inbox Automation. We offer comprehensive services to help you optimize your email infrastructure and achieve the best possible results.


About Inbox Automation

Inbox Automation is dedicated to helping businesses improve their email deliverability and security. With our expertise in email authentication protocols and domain management, we provide tailored solutions to ensure your emails reach the right inboxes every time.

FAQs: How to Set Up DMARC, DKIM, and SPF in Office 365

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What is DMARC?

DMARC (Domain-based Message Authentication, Reporting, and Conformance) is an email authentication protocol that helps prevent email spoofing and phishing. It works with SPF and DKIM to determine the authenticity of an email message. It provides a mechanism for domain owners to specify how emails should be handled if they fail authentication checks.

What is DKIM?

DKIM (DomainKeys Identified Mail) is an email authentication method that uses digital signatures to verify that an email has not been altered during transit and confirms the sender’s identity. This helps prevent email tampering and phishing attacks.

What is SPF?

SPF (Sender Policy Framework) is an email validation protocol that allows domain owners to specify which mail servers are permitted to send emails on behalf of their domain. It helps prevent unauthorized email senders (spoofers) from sending emails from your domain.

Where can I get help setting up DMARC, DKIM, and SPF?

Visit Inbox Automation for comprehensive services and expert assistance in setting up your domain’s DMARC, DKIM, and SPF.


About Inbox Automation

Inbox Automation specializes in enhancing business email deliverability and security. We offer expert solutions for setting up and managing DMARC, DKIM, and SPF, ensuring your emails reach the right inboxes, and protecting your brand from fraud.

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