mail-server/CHANGELOG.md

Change Log

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

[0.8.1] - 2024-05-23

To upgrade replace the stalwart-mail binary and then upgrade to the latest web-admin and spam filter versions.

Added

• POP3 support.
• DKIM signature length exploit protection.
• Faster email deletion.
• Junk/Trash folder auto-expunge and changelog auto-expiry (#403)
• IP allowlists.
• HTTP Strict Transport Security option.
• Add TLS Reporting DNS entry (#464).

Changed

• Use separate account for master user.
• Include server hostname in SMTP greetings (#448).

Fixed

• IP addresses trigger R_SUSPICIOUS_URL false positive (#461 #419).
• JMAP identities should not return null signatures.
• Include authentication headers and check queue quotas on Sieve message forwards.
• ARC seal using just one signature.
• Remove technical subdomains from MTA-STS policies and TLS records (#429).

[0.8.0] - 2024-05-13

This version uses a different database layout which is incompatible with previous versions. Please read the UPGRADING.md file for more information on how to upgrade from previous versions.

Added

• Clustering support with node auto-discovery and partition-tolerant failure detection.
• Autoconfig and MS Autodiscover support (#336)
• New variables retry_num, notify_num, last_error add last_status available in queue expressions.
• Performance improvements, in particular for FoundationDB.
• Improved full-text indexing with lower disk space usage.
• MTA-STS policy management.
• TLSA Records generation for DANE (#397)
• Queued message visualization from the web-admin.
• Master user support.

Changed

• Make certificate.* local keys by default.
• Removed server.run-as.* settings.
• Add Microsoft Office Macro types to bad mime types (#391)

Fixed

• mySQL TLS support (#415)
• Resolve file macros after dropping root privileges.
• Updated order of SPF Records (#395).
• Avoid duplicate accountIds when using case insensitive external directories (#399)
• authenticated_as variable not usable for must-match-sender (#372)
• Remove StandardOutput, StandardError in service (#390)
• SMTP AUTH=LOGIN compatibility issues with Microsoft Outlook (#400)

[0.7.3] - 2024-05-01

To upgrade replace the stalwart-mail binary and then upgrade to the latest web-admin version.

Added

• Full database export and import functionality
• Add --help and --version command line arguments (#365)
• Allow catch-all addresses when validating must match sender

Changed

• Add groupOfUniqueNames to the list of LDAP object classes

Fixed

• Trim spaces in DNS-01 ACME secrets (#382)
• Allow only one journald tracer (#375)
• authenticated_as variable not usable for must-match-sender (#372)
• Fixed BOGUS_ENCRYPTED_AND_TEXT spam filter rule
• Fixed parsing of IPv6 DNS server addresses

[0.7.2] - 2024-04-17

To upgrade replace the stalwart-mail binary and then upgrade to the latest web-admin version.

Added

• Support for DNS-01 and HTTP-01 ACME challenges (#226)
• Configurable external resources (#355)

Changed

Fixed

• Startup failure when Elasticsearch is down/starting up (#334)
• URL decode path elements in REST API.

[0.7.1] - 2024-04-12

To upgrade replace the stalwart-mail binary.

Added

• Make initial admin password configurable via env (#311)

Changed

• WebAdmin download URL.

Fixed

• Remove ASN.1 DER structure from DKIM ED25519 public keys.
• Filter out invalid timestamps on log entries.

[0.7.0] - 2024-04-09

This version uses a different database layout and introduces multiple breaking changes in the configuration files. Please read the UPGRADING.md file for more information on how to upgrade from previous versions.

Added

• Web-based administration interface.
• REST API for management and configuration.
• Automatic RSA and ED25519 DKIM key generation.
• Support for compressing binaries in the blob store (#227).
• Improved performance accessing IMAP mailboxes with a large number of messages.
• Support for custom DNS resolvers.
• Support for multiple loggers with different levels and outputs.

Changed

Fixed

• Store quotas as u64 rather than u32.
• Second IDLE connections disconnects the first one (#280).
• Use relaxed DNS parsing, allowing underscores in DNS labels (#172).
• Escape regexes within matches() expressions (#155).
• ManageSieve LOGOUT should reply with OK instead of BYE.

[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