spamassassin-milter/CHANGELOG.md

# SpamAssassin Milter changelog

## 0.3.0 (unreleased)

In this release, the milter implementation has been replaced with the new
[indymilter] library. With this change, there is no longer a dependency on the
libmilter C library. SpamAssassin Milter is now a pure Rust application.

The minimum supported Rust version is now 1.56.1.

### Changed

* The minimum supported Rust version is now 1.56.1 (using Rust edition 2021).
* The syntax of the mandatory `SOCKET` argument has changed:
  - Use <code>inet:<em>host</em>:<em>port</em></code> for a TCP socket.
  - Use <code>unix:<em>path</em></code> for a UNIX domain socket.
* The command-line help information has changed its appearance slightly with the
  update of the underlying Clap CLI library.
* The changelog is now maintained in a more structured format, similar to
  https://keepachangelog.com.

[indymilter]: https://crates.io/crates/indymilter

## 0.2.1 (2021-12-23)

* Various cosmetic improvements in code and tests, and updates to documentation.
* Update dependencies.

## 0.2.0 (2021-08-26)

* Bump minimum supported Rust version to 1.46.0.
* (defaults change) Invoke `spamc` using the absolute path `/usr/bin/spamc`
  (instead of any executable named `spamc` in the search path). To customise
  this, set the environment variable `SPAMASSASSIN_MILTER_SPAMC` to the desired
  path when building the application.
* Revise header rewriting logic. Handling and placement of `X-Spam-` headers now
  more accurately mirrors that applied by SpamAssassin.
* Include authentication status in information passed on to SpamAssassin.
* Update dependencies.

## 0.1.6 (2021-05-17)

* Improve processing of incoming `X-Spam-Flag` headers. Previously, in rare
  circumstances a message flagged as spam would not be rejected as requested.
  Reported by Petar Bogdanovic.
* Update dependencies.

## 0.1.5 (2021-03-16)

* Read output from `spamc` in a separate thread in order to avoid blocking when
  processing large messages in certain configurations.
* Document requirement to keep `--max-message-size` setting in sync with
  `spamc`’s `--max-size` setting.
* Remove overly strict validation of command-line options.
* Properly specify minimal dependency versions in `Cargo.toml`.
* Document minimum supported Rust version 1.42.0.

## 0.1.4 (2020-10-18)

* Correct a typo in log messages.
* Isolate integration tests from any existing `spamc` configuration present on
  the host.
* Various à la mode style improvements in code and project metadata.

## 0.1.3 (2020-07-04)

* Add `--reply-code`, `--reply-status-code`, and `--reply-text` options to allow
  customising the SMTP reply when rejecting spam.
* Log a warning and do not truncate the message body when `--max-message-size`
  is misconfigured (must be ≥ `spamc` max size as documented).
* Update dependencies in `Cargo.lock`.

## 0.1.2 (2020-06-07)

* Bump milter dependency to version 0.2.1.
* Remove existing UNIX domain socket at target path during startup.
* Derive `Eq` and `PartialEq` for configuration structs.

## 0.1.1 (2020-04-13)

* Use `Write::write_all` instead of `Write::write` in `spamc` client, in order
  to ensure buffers are written in their entirety.
* Do not include `.gitignore` file in published crate.

## 0.1.0 (2020-02-23)

Initial release.