Anyway to not allow duplicate accounts?

[khanhdom]

I was just wondering if there's any good way to ban users and disallow users to register base on ip, or the email domain name?

[JDT]

AdminCP, setting, options, User Registration options, scroll down to Allow Multiple Registrations Per User, click no.

[khanhdom]

I have that set, it's just they use different ip, and different email. However one user is doing like username1, username2, username3, and their emails are at username1@email.com, username2@email.com, with the email.com being an unpopular domain name, so might be their personal domain.

anyway I can block that domain address for email at the least?