# Customised contact verification emails don't reach domain owners

## Symptoms

Domain registrants (owners) don't get [ICANN-required verification emails](https://openprovider.help/books/domains/page/registrant-email-verification-icann-contact-validation) if Custom [Contact verification branding](https://cp.openprovider.eu/web/action/index#/email-template/ive?utm_source=KB-Article&utm_medium=kb&utm_campaign=KB) has been set up.

## Cause

The domain that is to be used (or rather to have the appearance of using) to send emails (that otherwise would come directly from Openprovider addresses) is not authenticated within our infrastructure:

![embedded-image-5l5nwwnq.png](https://openprovider.help/uploads/images/gallery/2026-08/embedded-image-5l5nwwnq.png)

## Resolution

You will be prompted to perform this procedure from [Contact verification branding](https://cp.openprovider.eu/web/action/index#/email-template/ive?utm_source=KB-Article&utm_medium=kb&utm_campaign=KB) page, however, if forgotten, please follow the instructions:

- Navigate to **Account > Settings > [E-mail authentication](https://cp.openprovider.eu/web/action/index#/tools/auth-email-sender-domain)** page in RCP
- Click on **Add domain** and add your domain which will be used as the E-mail sender in contact verification emails.

![embedded-image-9pocpfya.png](https://openprovider.help/uploads/images/gallery/2026-08/embedded-image-9pocpfya.png)

Click on the **Authenticate** button once you have added the domain.

If you would like to use a custom DKIM identifier, please refer to [How to use non 'default' DKIM identifier](https://openprovider.help/books/dns/page/how-to-use-non-default-dkim-identifier).