I want to set up a mailserver with postfix+dovecot+roundcubemail. And I don't want virtual users. Is it possible to use Unix users and somehow just include the /etc/passwd file for authentication/login?
The background is that I have several services installed on my server and all of them use Unix user authentication. For example, owncloud. So I want all of the users to be able to access all services with one login. I know this could be solved by LDAP but I am not smart enough to set up LDAP. ;)