What about for external use? We have people outside of our organization that have domain accounts created solely for use within sharepoint, but not email address. When they go to login, though they'll have to use the format of domain\username or username@domain.com. The latter can be misleading to them since we told them that they don't have an email address. Is there a way to set it up to allow just the username to log them into sharepoint just as it does with outlook web access?
Chris