CHANGELOG.md

Change Log

All notable changes to this project will be documented in this file. This project adheres to Semantic Versioning.

[0.6.0] - 2024-02-14

This version introduces breaking changes in the configuration file. Please read the 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.
• Redirect OAuth using a 301 instead of a 307 code.

[0.5.3] - 2024-01-14

Please read the UPGRADING.md file for more information on how to upgrade from previous versions.

Added

• Built-in fail2ban and IP address/mask blocking (#164).
• CLI: Read URL and credentials from environment variables (#88).
• mySQL driver: Add max-allowed-packet setting (#201).

Changed

• Unified storage settings for all services (read the UPGRADING.md for details)

Fixed

• IMAP retrieval of auto-encrypted emails (#203).
• mySQL driver: Parse timeout.wait property as duration (#202).
• X-Forwarded-For header on JMAP Rate-Limit does not work (#208).
• Use timeouts in install script (#138).

[0.5.2] - 2024-01-07

Please read the UPGRADING.md file for more information on how to upgrade from previous versions.

Added

• ACME support for automatic TLS certificate generation and renewal (#160).
• TLS certificate hot-reloading.
• HAProxy protocol support (#36).

Changed

Fixed

• IMAP command SEARCH <seqnum> is using UIDs rather than sequence numbers.
• IMAP responses to APPEND and EXPUNGE should include HIGHESTMODSEQ when CONDSTORE is enabled.

[0.5.1] - 2024-01-02

Added

• SMTP smuggling protection: Sanitization of outgoing messages that do not use CRLF as line endings.
• SMTP sender validation for authenticated users: Added the session.auth.must-match-sender configuration option to enforce that the sender address used in the MAIL FROM command matches the authenticated user or any of their associated e-mail addresses.

Changed

Fixed

• Invalid DKIM signatures for empty message bodies.
• IMAP command SEARCH BEFORE is not properly parsed.
• IMAP command FETCH fails to parse single arguments without parentheses.
• IMAP command ENABLE QRESYNC should also enable CONDSTORE extension.
• IMAP response to ENABLE command does not include enabled capabilities list.
• IMAP response to FETCH ENVELOPE should not return NIL when the From header is missing.

[0.5.0] - 2023-12-27

This version requires a database migration and introduces breaking changes in the configuration file. Please read the UPGRADING.md file for more information.

Added

• Performance enhancements:
  • Messages are parsed only once and their offsets stored in the database, which avoids having to parse them on every FETCH request.
  • Background full-text indexing.
  • Optimization of database access functions.
• Storage layer improvements:
  • In addition to FoundationDB and SQLite, now it is also possible to use RocksDB, PostgreSQL and mySQL as a storage backend.
  • Blobs can now be stored in any of the supported data stores, it is no longer limited to the file system or S3/MinIO.
  • Full-text searching con now be done internally or delegated to ElasticSearch.
  • 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.
• Internal directory:
  • User account, groups and mailing lists can now be managed directly from Stalwart without the need of an external LDAP or SQL directory.
  • HTTP API to manage users, groups, domains and mailing lists.
• IMAP4rev1 Recent flag support, which improves compatibility with old IMAP clients.
• LDAP bind authentication, to support some LDAP servers such as lldap which do not expose the userPassword attribute.
• Messages marked a spam by the spam filter can now be automatically moved to the account's Junk Mail folder.
• Automatic creation of JMAP identities.

Changed

Fixed

• Spamhaus DNSBL return codes.
• CLI tool reports authentication errors rather than a parsing error.

[0.4.2] - 2023-11-01

Added

• JMAP for Quotas support (RFC9425)
• JMAP Blob Management Extension support (RFC9404)
• Spam Filter - Empty header rules.

Changed

Fixed

• Daylight savings time support for crontabs.
• JMAP oldState doesn’t reflect in */changes (#56)

[0.4.1] - 2023-10-26

Added

Changed

Fixed

• Dockerfile entrypoint script.
• bayes_is_balanced function.

[0.4.0] - 2023-10-25

This version introduces some breaking changes in the configuration file. Please read the 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

[0.3.10] - 2023-10-17

Added

• Option to allow invalid certificates on outbound SMTP connections.
• Option to disable ansi colors on stdout.

Changed

• SMTP reject messages are now logged as info rather than debug.

Fixed

[0.3.9] - 2023-10-07

Added

• Support for reading environment variables from the configuration file using the !ENV_VAR_NAME special keyword.
• Option to disable ANSI color codes in logs.

Changed

• Querying directories from a Sieve script is now done using the query() method from eval. Your scripts will need to be updated, please refer to the new syntax.

Fixed

• IPrev lookups of IPv4 mapped to IPv6 addresses.

[0.3.8] - 2023-09-19

Added

• Journal logging support
• IMAP support for UTF8 APPEND

Changed

• Replaced rpgp with sequoia-pgp due to rpgp bug.

Fixed

• Fix: IMAP folders that contain a & can't be used (#90)
• Fix: Ignore empty lines in IMAP requests

[0.3.7] - 2023-09-05

Added

• Option to disable IMAP All Messages folder (#68).
• 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)
• Invalid IMAP FETCH responses for non-UTF-8 messages (#70)
• Allow STATUS and ACL IMAP operations on virtual mailboxes.
• IMAP SELECT QRESYNC without specifying a UID causes panic (#67)
• 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)
• JMAP Session resource returns EmailSubmission capabilities using arrays rather than objects.
• ManageSieve PUTSCRIPT should replace existing scripts.

[0.3.5] - 2023-08-18

Added

• TCP listener option nodelay.

Changed

Fixed

• SMTP: Allow disabling STARTTLS.
• JMAP: Support for OPTIONS HTTP method.

[0.3.4] - 2023-08-09

Added

• JMAP: Support for setting custom HTTP response headers (#52)

Changed

Fixed

• SMTP: Missing envelope keys in rewrite rules (#25)
• SMTP: Remove CRLF from Milter headers
• JMAP/IMAP: Successful authentication requests should not count when rate limiting
• IMAP: Case insensitive Inbox selection
• IMAP: Automatically create Inbox for group accounts

[0.3.3] - 2023-08-02

Added

• Encryption at rest with S/MIME or OpenPGP.
• Support for referencing context variables from dynamic values.

Changed

Fixed

• Support for PKCS8v1 ED25519 keys (#20).
• Automatic retry for import/export blob downloads (#14)

[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 and SQL authentication.
• subaddressing and catch-all addresses.
• S3-compatible storage.

Changed

• Merged the stalwart-jmap, stalwart-imap and stalwart-smtp repositories into stalwart-mail.
• Removed clustering module and replaced it with a FoundationDB backend option.
• Integrated Stalwart SMTP into Stalwart JMAP.
• Rewritten JMAP protocol parser.
• Rewritten store backend.
• Rewritten IMAP server to have direct access to the message store (no more IMAP proxy).
• Replaced actix with hyper.

Fixed