Resources

Guides, tutorials, and tips for DMARC policies and email authentication.

Guides

The Complete Guide to DMARC

Everything you need to know about DMARC — from first principles to full enforcement.

DMARC Enforcement: From p=none to p=reject

How to move from monitoring to full enforcement without breaking your email.

DMARC Reporting: How to Monitor and Analyze Your Reports

Understand aggregate and forensic reports, manage volume, and track authentication results.

DMARC Troubleshooting Guide

Diagnose and fix common DMARC failures, errors, and misconfigurations.

Articles

How to Add a DMARC Record in Bluehost

Step-by-step guide to adding a DMARC TXT record in Bluehost using the DNS Zone Editor.

How to Add a DMARC Record in Cloudflare

Step-by-step guide to adding a DMARC TXT record in Cloudflare DNS. Quick setup with Cloudflare's intuitive DNS management.

How to Add a DMARC Record in cPanel

Step-by-step guide to adding a DMARC TXT record using cPanel's Zone Editor. Quick setup for any hosting provider that uses cPanel.

How to Add a DMARC Record in DigitalOcean DNS

Step-by-step guide to adding a DMARC TXT record in DigitalOcean's DNS management panel.

How to Add a DMARC Record in Gandi

Step-by-step guide to adding a DMARC TXT record in Gandi's DNS Records editor.

How to Add a DMARC Record in GoDaddy

Step-by-step guide to adding a DMARC TXT record in GoDaddy DNS. Includes screenshots guidance and troubleshooting tips.

How to Add a DMARC Record in Hostinger

Step-by-step guide to adding a DMARC TXT record in Hostinger's hPanel DNS Zone Editor.

How to Add a DMARC Record in Hover

Step-by-step guide to adding a DMARC TXT record in Hover's DNS management panel.

How to Add a DMARC Record in IONOS

Step-by-step guide to adding a DMARC TXT record in IONOS (formerly 1&1) DNS settings.

How to Add a DMARC Record in Namecheap

Step-by-step guide to adding a DMARC TXT record in Namecheap DNS. Complete walkthrough of Namecheap's Advanced DNS settings.

How to Add a DMARC Record in OVH

Step-by-step guide to adding a DMARC TXT record in OVHcloud's DNS Zone editor.

How to Add a DMARC Record in Porkbun

Step-by-step guide to adding a DMARC TXT record in Porkbun's DNS records panel.

How to Add a DMARC Record in AWS Route 53

Step-by-step guide to adding a DMARC TXT record in AWS Route 53. Includes navigation instructions and troubleshooting tips.

How to Add a DMARC Record for Shopify

Learn how to set up a DMARC record for your Shopify store's custom domain. Protect your brand and improve email deliverability.

How to Add a DMARC Record in SiteGround

Step-by-step guide to adding a DMARC TXT record in SiteGround using Site Tools DNS Zone Editor.

How to Add a DMARC Record in Squarespace

Step-by-step guide to adding a DMARC TXT record for domains managed by Squarespace Domains.

How to Add a DMARC Record in Wix

Step-by-step guide to adding a DMARC TXT record for domains connected to Wix.

How to Create a DMARC Record

Learn how to create a DMARC record for your domain. Understand every tag, build your record step by step, and publish it in DNS.

DKIM vs DMARC: What's the Difference?

Understand the difference between DKIM and DMARC, how they work together, and why you need both for email authentication.

DMARC Alignment Explained: Why SPF and DKIM Aren't Enough

Learn what DMARC alignment is, why it matters, and how to fix alignment failures that cause DMARC to fail even when SPF and DKIM pass.

Why Mailing Lists Break DMARC and What to Do About It

Mailing lists modify messages in ways that break DKIM and SPF. Here's why it happens, how ARC helps, and practical workarounds.

DMARC Compliance: Requirements, Standards, and How to Get There

Understand DMARC compliance requirements from Google, Yahoo, and industry standards. Learn what you need to do to meet email authentication requirements.

DMARC External Report Destinations and the DNS Authorisation Record

Learn how to send DMARC reports to a third-party domain, the DNS TXT authorisation record required, and the common mistakes that stop reports arriving.

DMARC Fail: Why It Happens and How to Fix It

Learn why DMARC fails, understand SPF and DKIM alignment issues, and follow step-by-step instructions to diagnose and fix DMARC failures.

DMARC Setup and Checking for ActiveCampaign

Configure ActiveCampaign DKIM and SPF, set up a custom sending domain, and verify DMARC alignment for your marketing automation emails.

DMARC Alignment with Amazon SES: Setup and Troubleshooting

Step-by-step DMARC setup for Amazon SES, including Easy DKIM, custom MAIL FROM, and fixes for common alignment failures.

Checking DMARC Compliance with Brevo

Set up Brevo (formerly Sendinblue) DKIM, SPF and dedicated IPs correctly so your campaigns and transactional mail align with DMARC.

Checking DMARC with Constant Contact

Enable Constant Contact self-authentication, publish the right DKIM and SPF records, and verify DMARC passes for your campaigns.

DMARC Setup for Kit (ConvertKit)

Configure Kit (formerly ConvertKit) DKIM and SPF, set a custom sending domain, and verify DMARC passes for your creator email list.

DMARC for Freshdesk/Freshworks Email

Set up DKIM in the Freshworks admin, configure SPF for Freshdesk outbound email, and verify DMARC alignment for your support replies.

Checking DMARC Compliance When Using Mailgun

Configure Mailgun DKIM, SPF and custom sending domains correctly so your transactional mail passes DMARC alignment.

DMARC with Postmark: How to Check Compliance and Fix Issues

A practical guide to setting up DMARC with Postmark, troubleshooting DKIM alignment, and monitoring compliance.

Checking DMARC Compliance with Zendesk

Configure Zendesk SPF and DKIM, set up external email domains, and verify DMARC alignment for your support correspondence.

DMARC Setup for Zoho Mail: SPF, DKIM, and Compliance

Step-by-step guide to configuring SPF, DKIM, and DMARC for Zoho Mail and verifying everything aligns correctly.

What Is DMARC Monitoring? How to Track Your Email Authentication

A complete guide to DMARC monitoring — what to watch, how alerting works, and how to compare free and paid monitoring services.

DMARC RUA: How to Send Reports to Multiple Addresses

Learn how to configure multiple DMARC RUA destinations, set up DNS authorization for external report domains, and avoid common reporting mistakes.

DMARC None vs Quarantine vs Reject: How to Safely Move to Full Enforcement

Compare DMARC none, quarantine, and reject policies side by side. Learn the safe migration path from monitoring to full enforcement without breaking legitimate email.

The DMARC pct Tag Explained: How to Gradually Roll Out Enforcement

Learn what the DMARC pct tag does, how email receivers interpret it, and how to use gradual rollout percentages to safely enforce your DMARC policy.

554 5.7.5 Permanent Error Evaluating DMARC Policy: How to Fix It

Getting a 554 5.7.5 permanent error evaluating DMARC policy? Learn what causes this error and how to fix your DMARC record to restore email delivery.

DMARC Policy Explained: None, Quarantine, and Reject

Understand the three DMARC policies, what each one does to failing emails, and when to use none, quarantine, or reject for your domain.

DMARC Policy Not Enabled: What It Means and How to Fix It

Getting a 'DMARC quarantine/reject policy not enabled' warning? Learn why you see this message and how to move from p=none to full enforcement.

DMARC Quarantine vs Reject: Which Policy Should You Use?

Understand the difference between DMARC quarantine and reject policies. Learn when to use each and how to safely move from monitoring to enforcement.

DMARC Record Explained: Syntax, Tags, and Examples

Learn how to read and create DMARC records. Understand every tag, see real examples, and learn what each setting does for your email security.

How to Manage DMARC Reports When You're Overwhelmed by Volume

Drowning in DMARC aggregate reports? Practical strategies for parsing, filtering, consolidating, and triaging high-volume DMARC reporting.

Understanding DMARC Reports: How to Read and Use Them

Learn what DMARC reports are, how to receive them, and how to interpret aggregate and forensic reports to improve your email authentication.

DMARC RUA and RUF Explained: Understanding DMARC Reports

Learn what DMARC RUA and RUF tags do, how aggregate and forensic reports differ, and how to set up DMARC reporting for your domain.

DMARC Subdomain Policy (sp= Tag): When and How to Use It

Learn how the DMARC sp= tag controls subdomain policy, when to use it, and how to protect unused subdomains from spoofing.

How to Maintain DMARC Compliance with Third-Party Senders

Audit every service that sends email on your behalf, configure DKIM and SPF correctly, and keep DMARC aligned as your stack changes.

DNS Authentication DMARC Fail: What It Means and How to Fix It

Seeing 'DNS Authentication: DMARC Fail' from Mimecast or another email gateway? Learn what this specific error means and how to fix it.

How DMARC Works: The Complete Authentication Flow

Understand how DMARC authenticates email step by step, including how it uses SPF and DKIM results, alignment checks, and policy enforcement.

How to Read DMARC Reports (With Real Examples)

A practical walkthrough of reading DMARC aggregate XML reports. Real examples, field-by-field explanations, and how to spot spoofing.

No DMARC Record Found: What It Means and How to Fix It

Getting a 'No DMARC record found' error? Learn why this matters, what risks it creates, and how to add a DMARC record to your domain.

How to Set Up DMARC for Gmail

Learn how to set up DMARC when using Gmail or Google Workspace. Covers both free Gmail accounts and custom domains with step-by-step instructions.

How to Set Up DMARC for Google Workspace

Step-by-step guide to configuring DMARC for Google Workspace. Learn how to add the DMARC record and verify SPF and DKIM are working.

How to Set Up DMARC for Microsoft 365 (Office 365)

Step-by-step guide to configuring DMARC for Microsoft 365. Learn how to enable DKIM, configure SPF, and add your DMARC record.

How to Set Up DMARC for Proton Mail

Complete guide to configuring DMARC for Proton Mail custom domains. Set up SPF, DKIM, and DMARC for full email authentication.

SPF, DKIM, and DMARC: The Complete Email Authentication Guide

Learn how SPF, DKIM, and DMARC work together to protect your domain from email spoofing and improve deliverability.

What is DMARC? A Plain-English Guide to Email Authentication

Learn what DMARC is, why it matters for your email security, and how it works with SPF and DKIM to protect your domain from spoofing.