A Mailserver on Ubuntu 14.04: Postfix, Dovecot, MySQL This long post contains a recipe for building a reasonably secure Ubuntu 14.04 mail server in Amazon Web Services, using Postfix, Dovecot, and MySQL, with anti-spam packages in the form of amavisd-new, Clam AntiVirus, SpamAssassin, and Postgrey. Local users are virtual rather than being system users. Administration of users and domains is achie