smtp-server/CHANGELOG.md

# Change Log

All notable changes to this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/).

## [0.6.0] - 2024-02-14

This version introduces breaking changes in the configuration file. Please read the [UPGRADING.md](UPGRADING.md) file for more information on how to upgrade from previous versions.

## Added
- Distributed and fault-tolerant SMTP message queues.
- Distributed rate-limiting and fail2ban.
- Expressions in configuration files.

### Changed

### Fixed
- Do not include `STATUS` in IMAP `NOOP` responses (#234).
- Allow multiple SMTP `HELO` commands.

## [0.5.0] - 2023-12-27

This version introduces some breaking changes in the configuration file. Please read the [UPGRADING.md](UPGRADING.md) file for more information.

## Added
- Spam databases can now be stored in any of the supported data stores or `Redis`. It is no longer necessary to have an SQL server to use the spam filter.
- LDAP bind authentication, to support some LDAP servers such as `lldap` which do not expose the userPassword attribute.

### Changed

### Fixed
- Spamhaus DNSBL return codes.
- CLI tool reports authentication errors rather than a parsing error.

## [0.4.0] - 2023-10-25

This version introduces some breaking changes in the configuration file. Please read the [UPGRADING.md](UPGRADING.md) file for more information.

## Added
- Built-in Spam and Phishing filter.
- Scheduled queries on some directory types.
- In-memory maps and lists containing glob or regex patterns.
- Remote retrieval of in-memory list/maps with fallback mechanisms.
- Macros and support for including files from TOML config files.

### Changed
- `config.toml` is now split in multiple TOML files for better organization.
- **BREAKING:** Configuration key prefix `jmap.sieve` (JMAP Sieve Interpreter) has been renamed to `sieve.untrusted`.
- **BREAKING:** Configuration key prefix `sieve` (SMTP Sieve Interpreter) has been renamed to `sieve.trusted`.

### Fixed

## [0.3.8] - 2023-09-19

## Added
- Journal logging support

### Changed

### Fixed

## [0.3.7] - 2023-09-05

## Added
- Option to allow unencrypted SMTP AUTH (#72)
- Support for `rcpt-domain` key in `rcpt.relay` SMTP rule evaluation.

### Changed
 
### Fixed
- SMTP strategy `Ipv6thenIpv4` returns only IPv6 addresses (#70)
- Milter `DATA` command is sent after headers which causes ClamAV to hang.
- Sieve `redirect` of unmodified messages does not work.

## [0.3.6] - 2023-08-29

## Added
- Arithmetic and logical expression evaluation in Sieve scripts.
- Support for storing query results in Sieve variables.
- Results of SPF, DKIM, ARC, DMARC and IPREV checks available as environment variables in Sieve scripts.
- Configurable protocol flags for Milter filters.
- Fall-back to plain text when `STARTTLS` fails and `starttls` is set to `optional`.

### Changed
 
### Fixed
- Do not panic when `hash = 0` in reports. (#60)

## [0.3.5] - 2023-08-18

## Added
- TCP listener option `nodelay`.
 
### Changed
 
### Fixed
- Allow disabling `STARTTLS`.

## [0.3.4] - 2023-08-09

## Added
 
### Changed
 
### Fixed
- Missing envelope keys in rewrite rules (#25) 
- Remove CRLF from Milter headers

## [0.3.3] - 2023-08-02

### Added
- Support for referencing context variables from dynamic values.
 
### Changed
 
### Fixed
- Support for PKCS8v1 ED25519 keys (#20).

## [0.3.2] - 2023-07-28

### Added
- Sender and recipient address rewriting using regular expressions and sieve scripts.
- Subaddressing and catch-all addresses using regular expressions (#10).
- Dynamic variables in SMTP rules.
 
### Changed
- Added CLI to Docker container (#19).
 
### Fixed
- Workaround for a bug in `sqlx` that caused SQL time-outs (#15).
- Support for ED25519 certificates in PEM files (#20). 
- Better handling of concurrent IMAP UID map modifications (#17).
- LDAP domain lookups from SMTP rules.

## [0.3.1] - 2023-07-22

### Added
- Milter filter support.
- Match IP address type using /0 mask (#16).
 
### Changed
 
### Fixed
- Support for OpenLDAP password hashing schemes between curly brackets (#8). 
- Add CA certificates to Docker runtime (#5).

## [0.3.0] - 2023-07-16

### Added
- **LDAP** authentication.
- **subaddressing** and **catch-all** addresses.

### Changed
- Removed concept of `databases`, `lists`, `remotes` lists and replaced it with `directories`.
 
### Fixed
- Error when using PKCS8 DKIM private keys.


## [0.1.2] - 2023-03-11

### Added
- **LDAP** authentication.
- **subaddressing** and **catch-all** addresses.

### Changed
- Bump to latest mail-auth.
 
### Fixed
- Error `sender-domain` key not available for evaluation.

## [0.1.1] - 2023-03-06

### Added

### Changed
 
### Fixed
- Only the first TLS certificate is used rather than the full chain (#3)
- Update name for `reject-non-fqdn` setting (#6).

## [0.1.0] - 2023-03-01

Initial release.