What to do when registrants do not receive emails - SPF/DKIM/DMARC Failure

When sending out emails via Certain, you may receive reports from registrants that they are not receiving emails from the event. If this happens, review the following items and take the following steps to ensure emails are received.

Troubleshooting Steps

History Record Shows Email Was Sent - Registrant Still Did Not Receive

If a History Record shows but the registrant still did not receive the email, the email may be getting marked as Spam or Quarientined by the registrant’s Email Server.

There are multiple factors that receiving email servers consider when filtering out Spam or Malicious emails. The main areas checked are the FROM address and the Email Content.

FROM Address

Email Content

Spam filters look for things like the following:

> Note: If an email is Bounced back or Blocked by a receiving email server, the event contact (REPLYTO address) will receive an email notifying that the email was "Undeliverable". > If the email is sent to the Spam folder or Quarientined by the receiving server, no email is received by the Event Contact.

SPF/DKIM/DMARC Failure

If emails are not passing the security checks or are getting bounced back because they failed DMARC checks, review the FROM address that is being used.

There are two options:

Configuring your Account to use the Default Certain FROM address

1. Navigate to Account Settings > Implementation > Security Settings. 2. Under Other Settings, select Use event-information@certain.com next to Set Email FROM value to: 3. Click Save.

Using Your Own FROM Address

If using your own FROM address, ensure that the email passes security checked (SPF/DKIM/DMARC).

To do this, reach out to Certain Support to get information needed to set this up properly. Certain Support provides 3 DNS entries that are needed to make/add to the FROM addresses Domain.

Apply the DNS entries to the DNS host so the email server is alerted that emails sent from that address are legitimate. Passing SPF/DKIM/DMARC security checks allows emails to be delivered.