As a security measure, AT&T will lock your account, if you attempt to log into your email account too frequently using the incorrect credentials. Also you can call to Local Geeks Help for the support.When your BellSouth yahoo email locked. If you have care code 205.2 [LU003], You should call at&t support. This is the best thing for a user to do. If you want to resolve your issue by yourself then follow the steps below. Go to att.com (att.com manges bellsouth) Click on account Click on forgot password. Select the account verification method Ask for OTP Once you get OTP Verify your BellSouth yahoo email account Change your password