Applies to: WebinarJam and EverWebinar

Learn how to create a DMARC record to monitor and improve email authentication for your webinar notifications.

Before you begin

DMARC works together with DKIM and SPF to protect your domain and improve email deliverability.

  • Make sure you have already set up DKIM (required)
  • Set up SPF if you are using an integrated SMTP
  • DMARC does not work on its own: it relies on DKIM and SPF

What is DMARC?

DMARC (Domain-based Message Authentication, Reporting, and Conformance) is a DNS record that tells email providers:

  • How to handle emails that fail authentication
  • How to report those failures back to you

In simple terms, DMARC helps you:

  • Monitor who is sending emails from your domain
  • Detect unauthorized use (spoofing)
  • Improve inbox delivery over time

Step 1: Identify your sender domain

Your sender domain is the part of your email address after the @ symbol.

Example: you@yourdomain.com → yourdomain.com

In WebinarJam and EverWebinar:

  • The Webinar Host & Presenter email is used as the sender
  • Only the host’s domain needs to be configured
  • Secondary presenter emails do not need DMARC setup

If you use multiple domains, each one must have its own DMARC record.

The webinar host and presenters

Step 2: Access your DNS settings

Log in to your domain provider (such as GoDaddy, Namecheap, or Cloudflare).

Locate your DNS settings or DNS management section.

Namecheap advanced DNS settings

Example of Advanced DNS settings in Namecheap domain management

Source: How do I add TXT/SPF/DKIM/DMARC records for my domain?

Step 3: Create your DMARC record

A basic DMARC record looks like this:

v=DMARC1; p=none; rua=mailto:your@email.com;

What each part means:

  • v=DMARC1 → identifies the DMARC version
  • p=none → policy (monitor only, no action taken)
  • rua=mailto:your@email.com → where reports are sent

Replace the email address with one you control.

Understanding DMARC policies

The policy (p=) defines what happens when an email fails authentication:

  • p=none → monitor only (recommended starting point)
  • p=quarantine → send suspicious emails to spam
  • p=reject → block emails completely

Recommendation:

Start with p=none, review reports, then increase strictness later.

Step 4: Publish the DMARC record

To add your DMARC record:

  1. Go to your DNS settings
  2. Add a new TXT record
  3. Enter the following:
    • Host / Name: _dmarc
    • Value: your DMARC record
    • TTL: Default or Automatic
  4. Save your changes

DMARC record for a GoDaddy domain

Example of a DMARC TXT record in GoDaddy domain management

Allow up to 1 hour for the record to update.

Step 5: Test your DMARC setup

Before testing: Confirm that DKIM and/or SPF are already working

Learn more

Then:

  • Use an online DMARC checker tool (such as MXToolbox)
  • Verify that your record is detected correctly

Step 6: Monitor and analyze reports

DMARC sends reports to the email address defined in your record.

These reports show:

  • Which emails passed or failed authentication
  • Which services are sending emails from your domain

Pro tip

Use a DMARC monitoring service like Valimail to make reports easier to understand.

Over time, you can:

  • Identify missing SPF/DKIM entries
  • Detect unauthorized senders
  • Increase your DMARC policy from none → quarantine → reject