Release Notes: Logarithmic scaling of the spam probabilities has been implemented. Benchmarking and informational options have been added. A database-independent backend storage module has been written to remove the dependency on GDBM or Berkeley DB.
Release Notes: The "-l" option was removed and the license was changed to Artistic 2.0.
Release Notes: Locking has been removed from MySQL, as it makes it too slow.
Release Notes: A bug in the "list" backend that caused the the random deletion of tokens was fixed, and MySQL support was improved.
Release Notes: This release fixes a problem with concurrent updates.
Release Notes: A new database backend called "list". New options to set the value of X-Spam header, keep a plaintext mapping of hashes to tokens, and maintain a deny list. Allow and deny lists can now list domains as well as individual email addresses.