I'm sorry if this has been covered already - I've searched through the forums and haven't found anything that really specifies what I'm looking for here in any clarity.
That said, does anyone know of a plugin to allow you to eliminate specific users from registering based on their domain name?
I get alot of person@mail.ru and I'm certain they're trying to SPAM me or exploit WP in some way - at least one or two a day, and would love to just eliminate them from being able to register.
Any ideas would be much appreciated!