I'm trying to get league members to sign up on the forums so that they can post in our League Forum, but everybody is saying that they get an error message that says you can't use an email address from any of the major services (gmail, hotmail, yahoo, etc.).
I tried to register a new account using an email address that uses my works domain and got the same error message. This makes me think that it's just a generic error message. Is anybody else having this issue?