Disallowing email addresses from specific domains

I have come across a case where people are filling in fake membership forms to my park using the fake mail generator website to validate their email address.

Is there a possibility to add a feature that disallows domains to be included in the email address.

This is the website that allows a validation of an email to take place.  

Please reply asap.

It is possible to limit the email address entered in the email field. You will see the "Disallow Free Addresses" and "Allow Specific Domains" feature in the Email Properties > Options tab.

You may also set a "Validation with Verification" in the Confirmation tab.

Hope that helps. If you have any questions, let us know. Thank you.

this feature does not allow you to disallow fakemailgenerator emails
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You could use https://widgets.jotform.com/widget/e-mail_validator or https://widgets.jotform.com/widget/email_correctness_check widgets so you're sure that the email used is valid.

If you have any further concerns please let us know.

Thank you!