Let's take some blogging application. User in this application has email, password. When a new user is registered, he should activate his account (for example, via email). But... is account activation, password, password reset tokens, etc, are domain concepts?
So I'm thinking to divide User concept into 2 parts: Account and Member. An Account is non-domain concept, it will handle activation, password reset, etc. But Member is domain concept, a member does not anything about passwords, activation, etc.
An Account will have reference to a Member.
What do you think about this approach? or may User be a part of domain?