We need an email server installed on 2 Joomla websites utilizing the same server using a single user database or one email server that can handle multiple domains set up on separate sites. The interface will be roundcube in a Joomla website(s).
1) Install a Email Server on our Ubuntu 10.04 Server.
2) Create User Interface Using Round Cube.
3) Utilize a Single user database to control usernames, passwords, and permissions.
4) Place this email interface into two created joomla sites.
We would like this accomplished as quickly as possible. We are open to better suggestions about the email interface.