DMARC Setup Guide

What is DMARC?

DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that helps protect your domain from spoofing and phishing attacks. It works alongside SPF and DKIM to improve email security and deliverability.

Where Should the DMARC Record Be Added?

A DMARC record should always be added to the root (parent) domain, not to a sending subdomain. For example:

• yourdomain.com → Add the DMARC record here.
• mail.yourdomain.com → Do not add it here.
• send.yourdomain.com → Do not add it here.

DMARC is published as a TXT record with the hostname:

_dmarc.yourdomain.com

Subdomains inherit the parent domain’s DMARC policy unless a separate DMARC record is explicitly configured for them.

Common DNS Providers

1. Cloudflare

If your domain uses Cloudflare DNS:

1. Log in to Cloudflare.
2. Select your domain.
3. Go to DNS.
4. Add a TXT record.
5. Host/Name: _dmarc
6. Paste your DMARC value.
7. Save the record.

• Documentation: Cloudflare DMARC Management

2. Hostinger

If your domain is managed through Hostinger:

1. Open your Hostinger dashboard.
2. Navigate to DNS Zone.
3. Add a new TXT record.
4. Name: _dmarc
5. Paste the DMARC value.
6. Save the changes.

• Documentation: Hostinger DMARC Setup Guide

3. GoDaddy

If your domain is hosted on GoDaddy:

1. Sign in to GoDaddy.
2. Open Manage DNS for your domain.
3. Add a TXT record.
4. Host: _dmarc
5. Enter your DMARC policy.
6. Save the record.

• Documentation: GoDaddy DNS Management Help

4. Namecheap

If your domain uses Namecheap DNS:

1. Log in to Namecheap.
2. Open Domain List → Manage.
3. Go to Advanced DNS.
4. Add a new TXT record.
5. Host: _dmarc
6. Paste your DMARC value.
7. Save the record.

• Documentation: Namecheap Advanced DNS Guide

5. SiteGround

If your DNS is managed by SiteGround:

1. Log in to SiteGround.
2. Open Site Tools.
3. Navigate to Domain → DNS Zone Editor.
4. Create a new TXT record.
5. Name: _dmarc
6. Paste the DMARC policy.
7. Save the changes.

• Documentation: SiteGround DNS Zone Editor Guide

Notes

• DMARC should only be configured after SPF and DKIM are correctly set up.
• DNS changes may take a few minutes to 24 hours to propagate, depending on your DNS provider.
• Once propagation is complete, verify your DMARC record using any public DMARC checker before sending campaigns.