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).
This release features a lot of small and medium-sized changes, many related to how the image is build and tested during CI. The build now requires Docker Buildkit as the ClamAV Signatures are added via `COPY --link ...` during build-time. Moreover, the build is now multi-stage. `ENABLE_LDAP` is now deprecated.
### Added
- **documentation**: improve cron tasks documentation and fix link in documentation
- **documentation**: added link to brakkee.org for setup of docker-mailserver on Kubernetes
- **CI**: better build caching for CI
- **CI**: improve GitHub Action CI with re-usable workflows
- **tests**: ensure excessive FD limits are avoided
- **configuration**: added `reject_unknown_client_hostname` to main.cf
### Changed
- **documentation**: update and improve K8s documentation
- **scripts**: set configomat output to loglevel debug
- **scripts**: refactor CLI commands for database management
- **scripts**: simplify Fail2Ban output
- **tests**: update submodules for BATS
- **scripts**: rework environment variables setup
- **scripts**: revised linting script
- **scripts**: `addmailuser` - remove delaying completion until `/var/mail` is ready
- **configuration**: remove unnecessary postconf switch '-e' and use single quotes where possible
- **build**: streamline COPY statements in Dockerfile
- **scripts**: improve `helpers/log.sh`
- **build**: adjust build arguments
- **build**: enhance build process
### Deprecated
- The environment variable `ENABLE_LDAP` is deprecated and will be removed in [13.0.0]. Use `ACCOUNT_PROVISIONER=LDAP` now.
In this release the relay-host support saw [significant internal refactoring](https://github.com/docker-mailserver/docker-mailserver/pull/2604) in preparation for a future breaking change. Similar extensive restructuring through the codebase also occurred, where [each PR provides more details](https://github.com/docker-mailserver/docker-mailserver/milestone/17?closed=1). Care was taken to avoid breakage, but there may be some risk affecting unsupported third-party customizations which our test suite is unaware of.
- There is now support for [Dovecot-Master accounts](https://docker-mailserver.github.io/docker-mailserver/v11.1/config/advanced/dovecot-master-accounts/) that provide admin access to all mail accounts ([#2535](https://github.com/docker-mailserver/docker-mailserver/pull/2535))
- Using Port 465 to authenticate with a relay-host no longer breaks the Amavis transport for Postfix ([#2607](https://github.com/docker-mailserver/docker-mailserver/pull/2607))
- When mounting `/var/mail-state`, disabled services will no longer copy over data redundantly ([#2608](https://github.com/docker-mailserver/docker-mailserver/pull/2608))
- Amavis is now aware of new domains detected during Change Detection, no longer skipping virus and spam filtering ([#2616](https://github.com/docker-mailserver/docker-mailserver/pull/2616))
-`setup.sh -c <container name>` no longer ignores `<container name>` when more than 1 `docker-mailserver` container is running ([#2622](https://github.com/docker-mailserver/docker-mailserver/pull/2622))
### Improvements
- The Change Detector service will now only process relevant changes ([#2615](https://github.com/docker-mailserver/docker-mailserver/pull/2615)), in addition to now monitoring `postfix-sasl-password.cf`, `postfix-relaymap.cf`, and `postfix-regexp.cf` ([#2623](https://github.com/docker-mailserver/docker-mailserver/pull/2623))
- For LDAP users that only need to support a single mail domain, `setup config dkim` should now detect the domain implicitly ([#2620](https://github.com/docker-mailserver/docker-mailserver/pull/2620))
- The container capability `SYS_PTRACE` is no longer necessary ([#2624](https://github.com/docker-mailserver/docker-mailserver/pull/2624))
- Added an example for configuring a basic container `healthcheck` command ([#2625](https://github.com/docker-mailserver/docker-mailserver/pull/2625))
- Postfix `main.cf` setting `compatibility_level` was set to `2` during our startup scripts. This is now part of our default shipped `main.cf` config ([#2597](https://github.com/docker-mailserver/docker-mailserver/pull/2597))
- The Postfix `main.cf` override/extension support via `postfix-main.cf` has been improved to support multi-line values, instead of the previous single-line only support ([#2598](https://github.com/docker-mailserver/docker-mailserver/pull/2598))
### Deprecation Notice
- **`SASL_PASSWD` ENV**
An old ENV `SASL_PASSWD` has been around for supporting relay-host authentication, but since superceded by the `postfix-sasl-password.cf` config file. It will be removed in a future major release as detailed [here](https://github.com/docker-mailserver/docker-mailserver/pull/2605).
- **Platform Support - ARMv7**
This is a very old platform, superceded by ARMv8 and newer with broad product availability around 2016 onwards.
Support was introduced primarily for users the older generations of Raspberry Pi. ARM64 is the modern target for ARM devices.
If you require ARMv7 support, [please let us know](https://github.com/docker-mailserver/docker-mailserver/issues/2642).
1. [**Internal logging has been refactored**](https://github.com/docker-mailserver/docker-mailserver/pull/2493). The environment variable `DMS_DEBUG` has been replaced by [`LOG_LEVEL`](https://docker-mailserver.github.io/docker-mailserver/v11.0/config/environment/#log_level) to better control the verbosity of logs we output. The new logger is more structured and follows standard log conventions. `LOG_LEVEL` can be set to: `error`, `warn`, `info` (default), `debug` and `trace`.
2. [**`iptables` has been replaced by `nftables`**](https://github.com/docker-mailserver/docker-mailserver/pull/2505). The Fail2Ban configuration was adjusted accordingly. If you use `iptables` yourself (e.g. in `user-patches.sh`), make sure to update the scripts.
3.**[`PERMIT_DOCKER`](https://docker-mailserver.github.io/docker-mailserver/v11.0/config/environment/#permit_docker) has a new default value of `none`**. This change [better secures Podman](https://github.com/docker-mailserver/docker-mailserver/pull/2424); to keep the old behaviour (_adding the container IP address to Postfix's `mynetworks`_), use `PERMIT_DOCKER=container`.
### Minor Changes
1.**Many** minor improvements were made (cleanup & refactoring). Please refer to the section below to get an overview over all improvements. Moreover, there was a lot of cleanup in the scripts and in the tests. The documentation was adjusted accordingly.
3. SpamAssassin KAM was added with [`ENABLE_SPAMASSASSIN_KAM`](https://docker-mailserver.github.io/docker-mailserver/v11.0/config/environment/#enable_spamassassin_kam).
4. The `fail2ban` command was reworked and can now ban IP addresses as well.
5. There were a few small fixes, especially when it comes to bugs in scripts and service restart loops (no functionality changes, only fixes of existing functionality). When building an image from the Dockerfile - Installation of Postfix on modern Linux distributions should now always succeed.
6. Some default values for environment values changed: these are mostly non-critical, please refer to [#2428](https://github.com/docker-mailserver/docker-mailserver/pull/2428) and [#2487](https://github.com/docker-mailserver/docker-mailserver/pull/2487).
### Merged Pull Requests
- **[improvement]** tests: remove legacy functions / tests by @casperklein in [#2434](https://github.com/docker-mailserver/docker-mailserver/pull/2434)
- **[improvement]** `PERMIT_DOCKER=none` as new default value by @casperklein in [#2424](https://github.com/docker-mailserver/docker-mailserver/pull/2424)
- **[improvement]** Adjust environment variables to more sensible defaults by @georglauterbach in [#2428](https://github.com/docker-mailserver/docker-mailserver/pull/2428)
- **[fix]** macOS linting support by @NorseGaud in [#2448](https://github.com/docker-mailserver/docker-mailserver/pull/2448)
- **[improvement]** Rename config examples directory by @casperklein in [#2438](https://github.com/docker-mailserver/docker-mailserver/pull/2438)
- **[docs]** FAQ - Update naked/bare domain section by @sportshead in [#2446](https://github.com/docker-mailserver/docker-mailserver/pull/2446)
- **[improvement]** Remove obsolete `setup.sh debug inspect` command from usage description by @casperklein in [#2454](https://github.com/docker-mailserver/docker-mailserver/pull/2454)
- **[feature]** Introduce `CLAMAV_MESSAGE_SIZE_LIMIT` env by @casperklein in [#2453](https://github.com/docker-mailserver/docker-mailserver/pull/2453)
- **[fix]** remove SA reload for KAM by @georglauterbach in [#2456](https://github.com/docker-mailserver/docker-mailserver/pull/2456)
- **[docs]** Enhance logrotate description by @casperklein in [#2469](https://github.com/docker-mailserver/docker-mailserver/pull/2469)
- **[improvement]** Remove macOS specific code / support + shellcheck should avoid python, regardless of permissions by @NorseGaud in [#2466](https://github.com/docker-mailserver/docker-mailserver/pull/2466)
- **[docs]** Update fail2ban.md by @casperklein in [#2484](https://github.com/docker-mailserver/docker-mailserver/pull/2484)
- **[fix]** Makefile: Remove backup/restore of obsolete config directory by @casperklein in [#2479](https://github.com/docker-mailserver/docker-mailserver/pull/2479)
- **[improvement]** scripts: small refactorings by @georglauterbach in [#2485](https://github.com/docker-mailserver/docker-mailserver/pull/2485)
- **[fix]** Building on Ubuntu 21.10 failing to install postfix by @NorseGaud in [#2468](https://github.com/docker-mailserver/docker-mailserver/pull/2468)
- **[improvement]** Use FQDN as `REPORT_SENDER` default value by @casperklein in [#2487](https://github.com/docker-mailserver/docker-mailserver/pull/2487)
- **[improvement]** Improve test, get rid of sleep by @casperklein in [#2492](https://github.com/docker-mailserver/docker-mailserver/pull/2492)
- **[feature]** scripts: new log by @georglauterbach in [#2493](https://github.com/docker-mailserver/docker-mailserver/pull/2493)
- **[fix]** Restart supervisord early by @casperklein in [#2494](https://github.com/docker-mailserver/docker-mailserver/pull/2494)
- **[improvement]** scripts: renamed function `_errex` -> `_exit_with_error` by @georglauterbach in [#2497](https://github.com/docker-mailserver/docker-mailserver/pull/2497)
- **[improvement]** Remove invalid URL from SPF message by @casperklein in [#2503](https://github.com/docker-mailserver/docker-mailserver/pull/2503)
- **[improvement]** scripts: refactored scripts located under `target/bin/` by @georglauterbach in [#2500](https://github.com/docker-mailserver/docker-mailserver/pull/2500)
- **[improvement]** scripts: refactoring & miscellaneous small changes by @georglauterbach in [#2499](https://github.com/docker-mailserver/docker-mailserver/pull/2499)
- **[improvement]** scripts: refactored `daemon-stack.sh` by @georglauterbach in [#2496](https://github.com/docker-mailserver/docker-mailserver/pull/2496)
- **[fix]** add compatibility for Bash 4 to setup.sh by @georglauterbach in [#2519](https://github.com/docker-mailserver/docker-mailserver/pull/2519)
- **[fix]** tests: disabled "quota exceeded" test by @georglauterbach in [#2511](https://github.com/docker-mailserver/docker-mailserver/pull/2511)
- **[fix]** typo in setup-stack.sh by @eltociear in [#2521](https://github.com/docker-mailserver/docker-mailserver/pull/2521)
- **[improvement]** scripts: introduce `_log` to `sedfile` by @georglauterbach in [#2507](https://github.com/docker-mailserver/docker-mailserver/pull/2507)
- **[feature]** create `.github/FUNDING.yml` by @georglauterbach in [#2512](https://github.com/docker-mailserver/docker-mailserver/pull/2512)
- **[improvement]** scripts: refactored `check-for-changes.sh` by @georglauterbach in [#2498](https://github.com/docker-mailserver/docker-mailserver/pull/2498)
- **[improvement]** scripts: remove `DMS_DEBUG` by @georglauterbach in [#2523](https://github.com/docker-mailserver/docker-mailserver/pull/2523)
- **[feature]** firewall: replace `iptables` with `nftables` by @georglauterbach in [#2505](https://github.com/docker-mailserver/docker-mailserver/pull/2505)
- **[improvement]** log: adjust level and message(s) slightly for four messages by @georglauterbach in [#2532](https://github.com/docker-mailserver/docker-mailserver/pull/2532)
- **[improvement]** log: introduce proper log level fallback and env getter function by @georglauterbach in [#2506](https://github.com/docker-mailserver/docker-mailserver/pull/2506)
- **[feature]** scripts: added `TZ` environment variable to set timezone by @georglauterbach in [#2530](https://github.com/docker-mailserver/docker-mailserver/pull/2530)
- **[improvement]** setup: added grace period for account creation by @georglauterbach in [#2531](https://github.com/docker-mailserver/docker-mailserver/pull/2531)
- **[improvement]** refactor: letsencrypt implicit location discovery by @polarathene in [#2525](https://github.com/docker-mailserver/docker-mailserver/pull/2525)
- **[improvement]** setup.sh/setup: show usage when no argument is given by @casperklein in [#2540](https://github.com/docker-mailserver/docker-mailserver/pull/2540)
- **[improvement]** Dockerfile: Remove not needed ENVs and add comment by @casperklein in [#2541](https://github.com/docker-mailserver/docker-mailserver/pull/2541)
- **[improvement]** chore: (setup-stack.sh) Fix a small typo by @polarathene in [#2552](https://github.com/docker-mailserver/docker-mailserver/pull/2552)
- **[feature]** Add ban feature to fail2ban script by @casperklein in [#2538](https://github.com/docker-mailserver/docker-mailserver/pull/2538)
- **[fix]** Fix changedetector restart loop by @casperklein in [#2548](https://github.com/docker-mailserver/docker-mailserver/pull/2548)
- **[improvement]** chore: Drop `setup.sh` DATABASE fallback ENV by @polarathene in [#2556](https://github.com/docker-mailserver/docker-mailserver/pull/2556)
1. This release fixes a critical issue for LDAP users, installing a needed package on Debian 11
on build-time. Moreover, a race-condition was eliminated ([#2341](https://github.com/docker-mailserver/docker-mailserver/pull/2341)).
2. A resource leak in `check-for-changes.sh` was fixed ([#2401](https://github.com/docker-mailserver/docker-mailserver/pull/2401))
### Other Minor Changes
1.`SPAMASSASSIN_SPAM_TO_INBOX`'s default changed to `1`. ([#2361](https://github.com/docker-mailserver/docker-mailserver/pull/2361))
2. Changedetector functionality was added to `SSL_TYPE=manual`-setups. ([#2404](https://github.com/docker-mailserver/docker-mailserver/pull/2404))
3. Four new environment variables were introduced: `LOGWATCH_SENDER`, `ENABLE_DNSBL`, `DOVECOT_INET_PROTOCOLS` and `ENABLE_SPAMASSASSIN_KAM`. ([#2362](https://github.com/docker-mailserver/docker-mailserver/pull/2362), [#2342](https://github.com/docker-mailserver/docker-mailserver/pull/2342), [#2358](https://github.com/docker-mailserver/docker-mailserver/pull/2358), [#2418](https://github.com/docker-mailserver/docker-mailserver/pull/2418))
4. There are plenty of bug fixes and documentation enhancements with this release.
### Merged Pull Requests
- **[fix]** added `libldap-common` to packages in Dockerfile in [#2341](https://github.com/docker-mailserver/docker-mailserver/pull/2341)
- **[fix]** Prevent race condition on supervisorctl reload in [#2343](https://github.com/docker-mailserver/docker-mailserver/pull/2343)
- **[docs]** Update links to dovecot docs in [#2351](https://github.com/docker-mailserver/docker-mailserver/pull/2351)
- **[fix]** tests(fix): Align with upstream `testssl` field name change in [#2353](https://github.com/docker-mailserver/docker-mailserver/pull/2353)
- **[improvement]** Make TLS tests more reliable in [#2354](https://github.com/docker-mailserver/docker-mailserver/pull/2354)
- **[feature]** Introduce ENABLE_DNSBL env in [#2342](https://github.com/docker-mailserver/docker-mailserver/pull/2342)
- **[feature]** Introduce DOVECOT_INET_PROTOCOLS env in [#2358](https://github.com/docker-mailserver/docker-mailserver/pull/2358)
- **[fix]** Fix harmless startup errors in [#2357](https://github.com/docker-mailserver/docker-mailserver/pull/2357)
- **[improvement]** Add tests for sedfile wrapper in [#2363](https://github.com/docker-mailserver/docker-mailserver/pull/2363)
- **[feature]** add env var `LOGWATCH_SENDER` in [#2362](https://github.com/docker-mailserver/docker-mailserver/pull/2362)
- **[fix]** Fixed non-number-argument in `listmailuser` in [#2382](https://github.com/docker-mailserver/docker-mailserver/pull/2382)
- **[fix]** docs: Fail2Ban - Fix links for rootless podman in [#2384](https://github.com/docker-mailserver/docker-mailserver/pull/2384)
- **[fix]** docs(kubernetes): fix image name in example in [#2385](https://github.com/docker-mailserver/docker-mailserver/pull/2385)
- **[fix]** SSL documentation contains a small bug #2381 by @Twist235 in [#2383](https://github.com/docker-mailserver/docker-mailserver/pull/2383)
- **[fix]** get rid of subshell + `exec` in `helper-functions.sh` in [#2401](https://github.com/docker-mailserver/docker-mailserver/pull/2401)
- **[docs]** Rootless Podman security update by @p-fruck in [#2393](https://github.com/docker-mailserver/docker-mailserver/pull/2393)
- **[fix]** fix: double occurence of `/etc/postfix/regexp` in [#2397](https://github.com/docker-mailserver/docker-mailserver/pull/2397)
- **[improvement]** consistently make 1 the default value for `SPAMASSASSIN_SPAM_TO_INBOX` in [#2361](https://github.com/docker-mailserver/docker-mailserver/pull/2361)
- **[docs]** added sieve example for subaddress sorting in [#2410](https://github.com/docker-mailserver/docker-mailserver/pull/2410)
- **[feature]** Add changedetector functionality for `${SSL_TYPE} == manual` in [#2404](https://github.com/docker-mailserver/docker-mailserver/pull/2404)
- **[docs]** docs(deps): bump mkdocs-material to v8.2.1 in [#2422](https://github.com/docker-mailserver/docker-mailserver/pull/2422)
- **[feature]** Add SpamAssassin KAM in [#2418](https://github.com/docker-mailserver/docker-mailserver/pull/2418)
- **[improvement]** refactoring: split helper functions into smaller scripts in [#2420](https://github.com/docker-mailserver/docker-mailserver/pull/2420)
- **[fix]** fix: do not add accounts that already exists to account files in [#2419](https://github.com/docker-mailserver/docker-mailserver/pull/2419)
This release upgrades our base image from Debian 10 to Debian 11.
There is also an important regression fixed for `SSL_TYPE=letsencrypt` users.
- **[fix]** A regression with `check-for-changes.sh` introduced in `v10.3.0` affected `SSL_TYPE=letsencrypt`, preventing detection of cert renewals to restart services (_unless using `acme.json`_) [#2326](https://github.com/docker-mailserver/docker-mailserver/pull/2326)
- **[improvement]** Base image upgraded from Debian 10 Buster to Debian 11 Bullseye [#2116](https://github.com/docker-mailserver/docker-mailserver/pull/2116)
- Postfix upgraded from `3.4` to `3.5`. Dovecot upgraded from `2.3.4` to `2.3.13`. Python 2 is no longer included in the image, Python 3 remains (_[more information](https://github.com/docker-mailserver/docker-mailserver/pull/2116#issuecomment-955615529)_).
-`yescrypt` is now supported upstream as a password hash algorithm, `docker-mailserver` continues to use `SHA512-CRYPT` (_[more information](https://github.com/docker-mailserver/docker-mailserver/pull/2116#issuecomment-955800544)_).
- **[chore]** Dovecot statistics service disabled [#2292](https://github.com/docker-mailserver/docker-mailserver/pull/2292)
**WARNING:** This release had a small regression affecting the detection of changes for certificates provisioned in `/etc/letsencrypt` with the config ENV `SSL_TYPE=letsencrypt`, unless you use Traefik's `acme.json`. If you rely on this functionality to restart Postfix and Dovecot when updating your cert files, this will not work and it is advised to upgrade to `v10.4.0` or newer prior to renewal of your certificates.
- **[fix]** The Dovecot `userdb` will now additionally create "dummy" accounts for basic alias maps (_alias maps to a single real account managed by Dovecot, relaying to external providers aren't affected_) when `ENABLE_QUOTAS=1` (default) as a workaround for Postfix `quota-status` plugin querying Dovecot with inbound mail for a user, which Postfix uses to reject mail if quota has been exceeded (_to avoid risk of blacklisting from spammers abusing backscatter_) [#2248](https://github.com/docker-mailserver/docker-mailserver/pull/2248)
- **[fix]** `setup email list` command will no longer attempt to query Dovecot quota status when `ENABLE_QUOTAS` is disabled [#2264](https://github.com/docker-mailserver/docker-mailserver/pull/2264)
- **[fix]** `SSL_DOMAIN` ENV should now work much more reliably [#2274](https://github.com/docker-mailserver/docker-mailserver/pull/2274), [#2278](https://github.com/docker-mailserver/docker-mailserver/pull/2278), [#2279](https://github.com/docker-mailserver/docker-mailserver/pull/2279)
- **[fix]** DKIM - Removed `refile:` (_regex type_) from KeyTable entry in `opendkim.conf`, fixes validation error output from `opendkim-testkey` [#2249](https://github.com/docker-mailserver/docker-mailserver/pull/2249)
- **[fix]** DMARC - Removed quotes around the hostname value in `opendmarc.conf`. This avoids an authentication failure where an OpenDKIM header was previously ignored [#2291](https://github.com/docker-mailserver/docker-mailserver/pull/2291)
- **[fix]** When using `ONE_DIR=1` (default), the `spool-postfix` folder now has the correct permissions carried over. This resolves some failures notably with sieve filters [#2273](https://github.com/docker-mailserver/docker-mailserver/pull/2273)
- **[improvement]** Warnings are now logged for ClamAV and SpamAssassin if they are enabled but Amavis is disabled (_which is required for them to work correctly_) [#2251](https://github.com/docker-mailserver/docker-mailserver/pull/2251)
- **[improvement]** `user-patches.sh` is now invoked via `bash` to assist Kubernetes deployments with `ConfigMap` [#2295](https://github.com/docker-mailserver/docker-mailserver/pull/2295)
### Internal
These changes are primarily internal and are only likely relevant to users that maintain their own modifications related to the changed files.
- **[chore]** Redundant config from Postfix `master.cf` has been removed, it should not affect any users as our images have not included any of the related processes [#2272](https://github.com/docker-mailserver/docker-mailserver/pull/2272)
- **[refactor]** `check-for-changes.sh` was carrying some duplicate code from `setup-stack.sh` that was falling out of sync, they now share common code [#2260](https://github.com/docker-mailserver/docker-mailserver/pull/2260)
- **[refactor]** `acme.json` extraction was refactored into a CLI utility and updated to Python 3 (_required for future upgrade to Debian 11 Bullseye base image_) [#2274](https://github.com/docker-mailserver/docker-mailserver/pull/2274)
- **[refactor]** As part of the Traefik `acme.json` and `SSL_DOMAIN` work, logic for `SSL_TYPE=letsencrypt` was also revised [#2278](https://github.com/docker-mailserver/docker-mailserver/pull/2278)
- **[improvement]** Some minor tweaks to how we derive the internal `HOSTNAME` and `DOMAINNAME` from user configured `hostname` and `domainname` settings [#2280](https://github.com/docker-mailserver/docker-mailserver/pull/2280)
- You no longer need to maintain a copy of `setup.sh` matching your version release from v10.2 of `docker-mailserver` onwards. Version specific functionality of `setup.sh` has moved into the container itself, while `setup.sh` remains as a convenient wrapper to: `docker exec -it <container name> setup <command>`.
- [`ONE_DIR`](https://docker-mailserver.github.io/docker-mailserver/v10.2/config/environment/#one_dir) now defaults to enabled (`1`).
- For anyone relying on internal location of certificates (_internal copy of mounted files at startup_), the Postfix and Dovecot location of `/etc/postfix/ssl` has changed to `/etc/dms/tls`. This may affect any third-party `user-patches.sh` scripts that depended on this path to update certs.
- The [_Let's Encrypt_ section of our SSL / TLS docs](https://docker-mailserver.github.io/docker-mailserver/v10.2/config/security/ssl#lets-encrypt-recommended) has been brought up to date.
### Bigger scripts-related improvements
- **[scripts]** update `setup.sh` to now use a running container first if one exists [#2134](https://github.com/docker-mailserver/docker-mailserver/pull/2134)
- **[scripts]** included `setup.sh` functionality inside the container to be version independent again [#2174](https://github.com/docker-mailserver/docker-mailserver/pull/2174)
- **[scripts]** `HOSTNAME` and `DOMAINNAME` setup improved [#2175](https://github.com/docker-mailserver/docker-mailserver/pull/2175)
- **[scripts]** `delmailuser` can now delete mailboxed without TLD [#2172](https://github.com/docker-mailserver/docker-mailserver/pull/2172)
- **[scripts]** properly exit on failure ([#2199](https://github.com/docker-mailserver/docker-mailserver/pull/2199) in conjunction with [#2196](https://github.com/docker-mailserver/docker-mailserver/pull/2196))
- **[scripts]** make `setup.sh` completely non-interactive for Podman users [#2201](https://github.com/docker-mailserver/docker-mailserver/pull/2201)
### Security
Some internal refactoring and fixes happened this release cycle in [#2196](https://github.com/docker-mailserver/docker-mailserver/pull/2196):
- **[improve]** The Postfix and Dovecot location of `/etc/postfix/ssl` has changed to `/etc/dms/tls`
- **[improve]** An invalid `SSL_TYPE` or a valid value with an invalid configuration will now panic, exiting the container and emitting a fatal error to the logs
- **[fix]** An unconfigured/empty `SSL_TYPE` ENV now correctly disables SSL support for Dovecot and general Postfix configurations. A reminder that this is unsupported officially, and is only intended for tests and troubleshooting. Use only [a valid `SSL_TYPE`](https://docker-mailserver.github.io/docker-mailserver/v10.2/config/environment/#ssl_type) (_`letsencrypt` and `manual` are recommended_) for production deployments
- **[fix]** `TLS_LEVEL=intermediate` now modifies the system (container) `openssl.cnf` config to set the minimum protocol to TLS 1.0 (_from 1.2_) and cipher-suite support to `DEFAULT@SECLEVEL=1` (_from `2`_). This change is required for Dovecot in upcoming Debian Bullseye upgrade, to be compatible with the `TLS_LEVEL=intermediate` cipher-suite profile. It may affect other software within the container that relies on this openssl config, should you extend the Docker image [#2193](https://github.com/docker-mailserver/docker-mailserver/pull/2193)
- **[fix]** Provide DH parameters (_default: RFC 7919 group `ffdhe406.pem`_) at build-time, instead of during startup. Custom DH parameters regardless of `ONE_DIR` are now only detected when mounted to `/tmp/docker-mailserver/dhparams.pem` [#2192](https://github.com/docker-mailserver/docker-mailserver/pull/2192)
- **[docs]** Revise the _Let's Encrypt_ section of our SSL / TLS docs [#2209](https://github.com/docker-mailserver/docker-mailserver/pull/2209)
- **[misc]** introduced GitHub issue forms for issue templates [#2160](https://github.com/docker-mailserver/docker-mailserver/pull/2160)
- **[misc]** Removed the internal `mkcert.sh` script for Dovecot as it is no longer needed [#2196](https://github.com/docker-mailserver/docker-mailserver/pull/2196)
This is bug fix release. It reverts [a regression](https://github.com/docker-mailserver/docker-mailserver/issues/2154) introduced with [#2104](https://github.com/docker-mailserver/docker-mailserver/pull/2104).
This release mainly improves on `v10.1.0` with small bugfixes/improvements and dependency updates
- **[feat]** Add logwatch maillog.conf file to support /var/log/mail/ ([#2112](https://github.com/docker-mailserver/docker-mailserver/pull/2112))
- **[docs]** `CONTRIBUTORS.md` now also shows every code contributor from the past ([#2143](https://github.com/docker-mailserver/docker-mailserver/pull/2143))
- **[improve]** Avoid chmod +x when not needed ([#2127](https://github.com/docker-mailserver/docker-mailserver/pull/2127))
- **[docs]** Various documentation updates ([#2105](https://github.com/docker-mailserver/docker-mailserver/pull/2105), [#2045](https://github.com/docker-mailserver/docker-mailserver/pull/2045), [#2043](https://github.com/docker-mailserver/docker-mailserver/pull/2043), [#2035](https://github.com/docker-mailserver/docker-mailserver/pull/2035), [#2001](https://github.com/docker-mailserver/docker-mailserver/pull/2001))
- **[misc]** Fixed a lot of small bugs, updated dependencies and improved functionality ([#2095](https://github.com/docker-mailserver/docker-mailserver/pull/2095), [#2047](https://github.com/docker-mailserver/docker-mailserver/pull/2047), [#2046](https://github.com/docker-mailserver/docker-mailserver/pull/2046), [#2041](https://github.com/docker-mailserver/docker-mailserver/pull/2041), [#1980](https://github.com/docker-mailserver/docker-mailserver/pull/1980), [#2030](https://github.com/docker-mailserver/docker-mailserver/pull/2030), [#2024](https://github.com/docker-mailserver/docker-mailserver/pull/2024), [#2001](https://github.com/docker-mailserver/docker-mailserver/pull/2001), [#2000](https://github.com/docker-mailserver/docker-mailserver/pull/2000), [#2059](https://github.com/docker-mailserver/docker-mailserver/pull/2059))
This release improves on `9.1.0` in many aspect, including general fixes, Fail2Ban, LDAP and documentation. This release contains breaking changes.
- **[general]** Fixed many prose errors (spelling, grammar, indentation).
- **[general]** Documentation is better integrated into the development process and it's visibility within the project increased ([#1878](https://github.com/docker-mailserver/docker-mailserver/pull/1878)).
- **[general]** Added `stop_grace_period:` to example Compose file and supervisord ([#1896](https://github.com/docker-mailserver/docker-mailserver/pull/1896) [#1945](https://github.com/docker-mailserver/docker-mailserver/pull/1945))
- **[general]** `./setup.sh email list` was enhanced, now showing information neatly ([#1898](https://github.com/docker-mailserver/docker-mailserver/pull/1898))
- **[general]** Added update check and notification ([#1976](https://github.com/docker-mailserver/docker-mailserver/pull/1976), [#1951](https://github.com/docker-mailserver/docker-mailserver/pull/1951))
- **[general]** Moved environment variables to the documentation and improvements ([#1948](https://github.com/docker-mailserver/docker-mailserver/pull/1948), [#1947](https://github.com/docker-mailserver/docker-mailserver/pull/1947), [#1931](https://github.com/docker-mailserver/docker-mailserver/pull/1931))
- **[security]** Major Fail2Ban improvements (cleanup, update and breaking changes, see below)
- **[code]** Added color variables to `setup.sh` and improved the script as a whole ([#1879](https://github.com/docker-mailserver/docker-mailserver/pull/1879), [#1886](https://github.com/docker-mailserver/docker-mailserver/pull/1886))
- **[ldap]** Use dovecots LDAP `uris` connect option instead of `hosts` ([#1901](https://github.com/docker-mailserver/docker-mailserver/pull/1901))
- **[ldap]** Complete rework of LDAP documentation ([#1921](https://github.com/docker-mailserver/docker-mailserver/pull/1921))
- **[docs]** PRs that contain changes to docs will now be commented with a preview link ([#1988](https://github.com/docker-mailserver/docker-mailserver/pull/1988))
### Breaking Changes
- **[security]** Fail2Ban adjustments:
- Fail2ban v0.11.2 is now used ([#1965](https://github.com/docker-mailserver/docker-mailserver/pull/1965)).
- The previous F2B config (from an old Debian release) has been replaced with the latest default config for F2B shipped by Debian 10.
- The new default blocktype is now `DROP`, not `REJECT` ([#1914](https://github.com/docker-mailserver/docker-mailserver/pull/1914)).
- A ban now applies to all ports (`iptables-allports`), not just the ones that were "attacked" ([#1914](https://github.com/docker-mailserver/docker-mailserver/pull/1914)).
- Fail2ban 0.11 is totally compatible to 0.10, but the database got some new tables and fields (auto-converted during the first start), so once updated to DMS 10.0.0, you have to remove the database `mailstate:/lib-fail2ban/fail2ban.sqlite3` if you would need to downgrade to DMS 9.1.0 for some reason.
- **[ldap]** Removed `SASLAUTHD_LDAP_SSL`. Instead provide a protocol in `SASLAUTHD_LDAP_SERVER` and adjust `SASLAUTHD_LDAP_` default values ([#1989](https://github.com/docker-mailserver/docker-mailserver/pull/1989)).
- **[general]** Removed `stable` release tag ([#1975](https://github.com/docker-mailserver/docker-mailserver/pull/1975)):
- Scheduled builds are now based off `edge`.
- Instead of `stable`, please use the latest version tag available (_or the `latest` tag_).
- The `stable` image tag will be removed from DockerHub in the near future.
This release marks the breakpoint where the wiki was transferred to a [reworked documentation](https://docker-mailserver.github.io/docker-mailserver/edge/)
- **[feat]** Support extra `user_attributes` in accounts configuration ([#1792](https://github.com/docker-mailserver/docker-mailserver/pull/1792))
- **[feat]** Add possibility to use a custom dkim selector ([#1811](https://github.com/docker-mailserver/docker-mailserver/pull/1811))
- **[feat]** TLS: Dual (aka hybrid) certificate support! (eg ECDSA certificate with an RSA fallback for broader compatibility) ([#1801](https://github.com/docker-mailserver/docker-mailserver/pull/1801)).
- This feature is presently only for `SSL_TYPE=manual`, all you need to do is provide your fallback certificate to the `SSL_ALT_CERT_PATH` and `SSL_ALT_KEY_PATH` ENV vars, just like your primary certificate would be setup for manual mode.
- **[security]** TLS: You can now use ECDSA certificates! ([#1802](https://github.com/docker-mailserver/docker-mailserver/pull/1802))
- Warning: ECDSA may not be supported by legacy systems (most pre-2014). You can provide an RSA certificate as a fallback.
- **[fix]** TLS: For some docker-compose setups when restarting the docker-mailserver container, internal config state may have been persisted despite making changes that should reconfigure TLS (eg changing `SSL_TYPE` or replacing the certificate file) ([#1801](https://github.com/docker-mailserver/docker-mailserver/pull/1801)).
- **[security]** TLS: `TLS_LEVEL=modern` has changed the server-side preference order to 128-bit before 256-bit encryption ([#1802](https://github.com/docker-mailserver/docker-mailserver/pull/1802)).
- NOTE: This is still very secure but may result in misleading lower scores/grades from security audit websites.
- **[security]** TLS: `TLS_LEVEL=modern` removed support for AES-CBC cipher suites and follows best practices by supporting only AEAD cipher suites ([#1802](https://github.com/docker-mailserver/docker-mailserver/pull/1802)).
- NOTE: As TLS 1.2 is the minimum required for modern already, AEAD cipher suites should already be supported and preferred.
- **[security]** TLS: `TLS_LEVEL=intermediate` has removed support for cipher suites using RSA for key exchange (only available with an RSA certificate) ([#1802](https://github.com/docker-mailserver/docker-mailserver/pull/1802)).
- NOTE: This only affects Dovecot which supported 5 extra cipher suites using AES-CBC and AES-GCM. Your users MUA clients should be unaffected, preferring ECDHE or DHE for key exchange.
- **[refactor]** Complete refactoring of opendkim script ([#1812](https://github.com/docker-mailserver/docker-mailserver/pull/1812)).
- NOTE: Use `./setup.sh config dkim help` to see the new syntax.
The transfer of the old repository to the new organization has completed. This release marks the new starting point for `docker-mailserver` in the `docker-mailserver` organization. Various improvements were made, small bugs fixed and the complete CI was transferred.
- **[general]** transferred the whole repository to `docker-mailserver/docker-mailserver`
- **[general]** adjusted `README.md` and split off `ENVIRONMENT.md`
- **[ci]** usage of the GitHub Container Registry
- **[ci]** switched from TravisCI to **GitHub Actions for CI/CD**
- now building images for `amd64` and `arm/v7` and `arm/64`
