The email server is giving this error:
SMTP server response: 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server. - Failure
The solution appears to be to set the FROM address to someone using the @void-judgments.com domain or else it won't work. It appears this is a limitation set by your hosting provider that you could ask them about.