Based on what I've read, it sounds as if one would use the e-mail type of access rules to prevent people with particular e-mail address domain names from signing up. For example: "%@mailinator.com"

But what is the difference between the e-mail type versus the host type? If I were to create a host type rule using "%.mailinator.com", then isn't it the same as an e-mail type rule using "%@mailinator.com"? (Perhaps I don't really understand how the host type works. I looked through the Handbook, and found nothing on it.)