Release Notes: This is a major feature release. It adds support for: Lua 5.2, LDAP "soft starting", arbitrary socket queries, Erlang databases, MDB databases, JSON for reputation queries, and DKIM extension tags. It has fixes for ADSP processing and library checks during build. There are improvements to statistics scripts.
Release Notes: Minor bugs were fixed.
Release Notes: This is a minor bugfix release. Upgrading is only needed if it resolves a problem you're having.
Release Notes: Bugfixes and packaging fixes. Upgrading is recommended.
Release Notes: This release adds new features, including SMTP report delivery, further RRD-based reputation development, improved integration with postfix configuration files, and experimental extensions enabling experimental use outside of email. Bugfixes include resolving a verification problem with some (rare) signatures and a crash bug when the query cache was used. Upgrading is recommended.
Release Notes: Another minor bugfix release. Upgrading is not required unless something fixed in this release is causing you difficulty.