The OpenDKIM Project
This is the Wiki page for the OpenDKIM project. Please keep checking back as we develop it.
DKIM, or DomainKeys Identified Mail, is a proposed standard of the IETF defined in RFC4871 . It is a protocol by which a signing agent (i.e. a domain) can affix a signature to a message, and a verifier can confirm its validity upon receipt, essentially meaning a domain can take responsibility for a message it sends or relays. For more on this, go to the dkim.org web page .
OpenDKIM is an open source project to provide DKIM signing and verifying services. It consists of two main parts: libopendkim, a thread-safe C library that provides DKIM and signing services as well as some related functions (e.g. ADSP), and opendkim, a mail filter that can plug in to MTAs like sendmail , postfix  and Sun JMS  (or any other that uses the milter protocol).
The project's main page is at opendkim.org  where you can find some useful resources including mailing lists for people interested in using the package. If you're interested at more of a developer level, development is maintained at SourceForge  and via the "opendkim-dev" mailing list. SourceForge's site contains the download area as well as the current bug trackers.
OpenDKIM is a code fork of dkim-milter  by the original author of that code. The earlier code has been in development since the early days of DKIM's evolution through the standards process, and this practice has continued after the fork. The forked version has more people with commit access, which in turn has encouraged a lot of new development.
The latest release is v2.2.2. Development of v2.3.0 is currently in beta releases, and v2.4.0 is being planned.
The Developers section is where you'll find a lot more about upcoming releases and in-progress development work.