Postfix: Past, Present, and Future

In the twelve years since its initial release by IBM, the open source Postfix mail system has become part of the email infrastructure. The system has proven itself on personal systems and on ISP infrastructures with tens of millions of mailboxes. After Postfix reached completion in 2006, the focus of development moved from building new functionality toward making the system more extensible and more survivable in the face of changing requirements and threats. In this presentation Wietse will review lessons learned and current developments and will offer some speculation about the future.