release: v13.2.0 (#3746)

* bump `VERSION` & adjust `CHANGELOG.md`

* chore: Bump the unreleased base compare tag in `CHANGELOG.md`

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Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
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Georg Lauterbach 2024-01-04 22:14:51 +01:00 committed by GitHub
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All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased](https://github.com/docker-mailserver/docker-mailserver/compare/v13.1.0...HEAD)
## [Unreleased](https://github.com/docker-mailserver/docker-mailserver/compare/v13.2.0...HEAD)
> **Note**: Changes and additions listed here are contained in the `:edge` image tag. These changes may not be as stable as released changes.
## [v13.2.0](https://github.com/docker-mailserver/docker-mailserver/releases/tag/v13.2.0)
### Security
DMS is now secured against the [recently published spoofing attack "SMTP Smuggling"](https://www.postfix.org/smtp-smuggling.html) that affected Postfix ([#3727](https://github.com/docker-mailserver/docker-mailserver/pull/3727)):
- Postfix upgraded from `3.5.18` to `3.5.23` which provides the [long-term fix with `smtpd_forbid_bare_newline = yes`](https://www.postfix.org/smtp-smuggling.html#long)
- If you are unable to upgrade to this release of DMS, you may follow [these instructions](https://github.com/docker-mailserver/docker-mailserver/issues/3719#issuecomment-1870865118) for applying the [short-term workaround](https://www.postfix.org/smtp-smuggling.html#short).
- This change should not cause compatibility concerns for legitimate mail clients, however if you use software like `netcat` to send mail to DMS (_like our test-suite previously did_) it may now be rejected (_especially with the the short-term workaround `smtpd_data_restrictions = reject_unauth_pipelining`_).

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13.1.0
13.2.0