In some cases MantisBT is setup in a way, where it allows users that already exists in a directory or another application to be automatically authenticated and added to MantisBT. For example, a company may setup their MantisBT installation in a way, where its staff members that are already registered in their LDAP directory, should be allowed to login into MantisBT with the same user name and password. Another example, is where MantisBT is integrated into some content management system, where it is desired to have a single registration and single sign-on experience. In such scenarios, once a user logs in for the first time, a user account is automatically created for them, although the password verification is still done against LDAP or the main users repository.