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Change Log

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

[0.10.7] - 2024-12-04

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

Added

  • Delivery and DMARC Troubleshooting (#420).
  • Support for external email addresses on mailing lists (#152).
  • Azure blob storage support.

Changed

Fixed

  • Some mails can't be moved out of the junk folder (#670).
  • Out of bound index error on Sieve script (#941).
  • Missing User-Agent header for ACME (#937).
  • UTF8 support in IMAP4rev1 (#948).
  • Account alias owner leak on autodiscover.
  • Include all events in OTEL traces + Include spanId in webhooks.
  • Implement todo!() causing panic on concurrency and rate limits.
  • Mark SQL store as active if used as a telemetry store.
  • Discard empty form submissions.

[0.10.6] - 2024-11-07

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

Added

  • Enterprise license automatic renewals before expiration (disabled by default).
  • Allow to LDAP search using bind dn instead of auth bind connection when bind auth is enabled (#873)

Changed

Fixed

  • Include preferred_username and email in OIDC id_token.
  • Verify roles and permissions when creating or modifying accounts (#874)

[0.10.5] - 2024-10-15

To upgrade replace the stalwart-mail binary.

Added

  • Data store CLI.

Changed

Fixed

  • Tokenizer performance issue (#863)
  • Incorrect AI model endpoint setting.

[0.10.4] - 2024-10-08

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

Added

  • Detect and ban port scanners as well as other forms of abuse (#820).
  • ACME External Account Binding support (#379).

Changed

  • The settings server.fail2ban.* have been moved to server.auto-ban.*.
  • The event security.brute-force-ban is now security.abuse-ban.

Fixed

  • Do not send SPF failures reports to local domains.
  • Allow nonce in OAuth code requests.
  • Warn when there are errors migrating domains rather than aborting migration.

[0.10.3] - 2024-10-07

To upgrade replace the stalwart-mail binary and then upgrade to the latest web-admin. Enterprise users wishing to use the new LLM-powered spam filter should also upgrade the spam filter rules.

Added

  • AI-powered Spam filtering and Sieve scripting (Enterprise feature).

Changed

  • The untrusted Sieve interpreter now has the vnd.stalwart.expressions extension enabled by default. This allows Sieve users to use the eval function to evaluate expressions in their scripts. If you would like to disable this extension, you can do so by adding vnd.stalwart.expressions to sieve.untrusted.disabled-capabilities.

Fixed

  • S3-compatible backends: Retry on 5xx errors.
  • OIDC: Include nonce parameter in id_token response.

[0.10.2] - 2024-10-02

To upgrade first upgrade the webadmin and then replace the stalwart-mail binary. If you read these instructions too late, you can upgrade to the latest web-admin using curl -k -u admin:yourpass https://yourserver/api/update/webadmin.

Added

  • OpenID Connect server (#298).
  • OpenID Connect backend support (Enterprise feature).
  • OpenID Connect Dynamic Client Registration (#4)
  • OAuth 2.0 Dynamic Client Registration Protocol (RFC7591) (#136)
  • OAuth 2.0 Token Introspection (RFC7662).
  • Contact form submission handling.
  • webadmin.path setting to override unpack directory (#792).

Changed

Fixed

  • Missing LIST-STATUS from RFC5819 in IMAP capability responses (#816).
  • Do not allow tenant domains to be deleted if they have members (#812).
  • Tenant principal limits (#810).

[0.10.1] - 2024-09-26

To upgrade replace the stalwart-mail binary.

Added

  • OAUTHBEARER SASL support in all services (#627).

Changed

Fixed

  • Fixed migrate_directory range scan (#784).

[0.10.0] - 2024-09-21

This version includes breaking changes to how accounts are stored. Please read UPGRADING.md for details.

Added

  • Multi-tenancy (Enterprise feature).
  • Branding (Enterprise feature).
  • Roles and permissions.
  • Full-text search re-indexing.
  • Partial database backups (#497).

Changed

Fixed

  • IMAP IDLE support for command pipelining, aka the Apple Mail iOS 18 bug (#765).
  • Case insensitive INBOX fileinto (#763).
  • Properly decode undelete account name (#761).

[0.9.4] - 2024-09-09

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

Added

  • Support for global Sieve scripts that can be used by users to filter their incoming mail.
  • Allow localhost to override HTTP access controls to prevent lockouts.

Changed

  • Sieve runtime error default log level is now debug.

Fixed

  • Ignore INBOX case on Sieve's fileinto (#725)
  • Local keys parsing and retrieval issues.
  • Lookup reload does not include database settings.
  • Account count is incorrect.

[0.9.3] - 2024-08-29

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

Added

  • Dashboard (Enterprise feature)
  • Alerts (Enterprise feature)
  • SYN Flood (session "loitering") attack protection (#482)
  • Mailbox brute force protection (#688)
  • Mail from is allowed (session.mail.is-allowed) expression (#609)

Changed

  • authentication.fail2ban setting renamed to server.fail2ban.authentication.
  • Added elapsed times to message filtering events.

Fixed

  • Include queueId in MTA Hooks (#708)
  • Do not insert empty keywords in FTS index.

[0.9.2] - 2024-08-21

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

Added

  • Message delivery history (Enterprise feature)
  • Live tracing and logging (Enterprise feature)
  • SQL Read Replicas (Enterprise feature)
  • Distributed S3 Blob Store (Enterprise feature)

Changed

Fixed

  • Autodiscover request parser issues.
  • Do not create tables when using SQL as an external directory (fixes #291)
  • Do not hardcode logger id (fixes #348)
  • Include Forwarded-For IP address in http.request-url event (fixes #682)

[0.9.1] - 2024-08-08

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

Added

  • Metrics support (closes #478)
    • OpenTelemetry Push Exporter
    • Prometheus Pull Exporter (closes #275)
  • HTTP endpoint access controls (closes #266 #329 #542)
  • Add options setting to PostgreSQL driver (closes #662)
  • Add isActive property to defaults on Sieve/get JMAP method (closes #624)

Changed

  • Perform must-match-sender checks after sender rewriting (closes #394)
  • Only perform email ingest duplicate check on the target mailbox (closes #632)

Fixed

  • Properly parse Forwarded and X-Forwarded-For headers (fixes #669)
  • Resolve DKIM macros when generating DNS records (fixes #666)
  • Fixed is_local_domain Sieve function (fixes #622)

[0.9.0] - 2024-08-01

To upgrade replace the stalwart-mail binary and then upgrade to the latest web-admin. This version includes breaking changes to the Webhooks configuration and produces a slightly different log output, read UPGRADING.md for details.

Added

  • Improved and faster tracing and logging.
  • Customizable event logging levels.

Changed

Fixed

  • ManageSieve: Return capabilities after successful STARTTLS
  • Do not provide {auth_authen} Milter macro unless the user is authenticated

[0.8.5] - 2024-07-07

To upgrade replace the stalwart-mail binary.

Added

  • Restore deleted e-mails (Enterprise Edition only)
  • Kubernetes (K8S) livenessProbe and readinessProbe endpoints.

Changed

  • Avoid sending reports for DMARC/delivery reports (#173)

Fixed

  • Refresh old FoundationDB read transactions (#520)
  • Subscribing shared mailboxes doesn't work (#251)

[0.8.4] - 2024-07-03

To upgrade replace the stalwart-mail binary.

Added

Changed

Fixed

  • Fix TOTP validation order.
  • Increase Jemalloc page size on armv7 builds.

[0.8.3] - 2024-07-01

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

Added

  • Two-factor authentication with Time-based One-Time Passwords (#436)
  • Application passwords (#479).
  • Option to disable user accounts.

Changed

  • DANE success on EndEntity match regardless of TrustAnchor validation.

Fixed

  • Fix ManageSieve GETSCRIPT response: Add missing CRLF (#563)
  • Do not return CAPABILITIES after ManageSieve AUTH=PLAIN SASL exchange (#548)
  • POP3 QUIT must write a response (#568)

[0.8.2] - 2024-06-22

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

Added

  • Webhooks support (#480)
  • MTA Hooks (like milter but over HTTP)
  • Manually train and test spam classifier (#473 #264 #257 #471)
  • Allow configuring default mailbox names, roles and subscriptions (#125 #290 #458 #498)
  • Include robots.txt (#542)

Changed

  • Milter support on all SMTP stages (#183)
  • Do not announce STARTTLS if the listener does not support it.

Fixed

  • Incoming reports stored in the wrong subspace (#543)
  • Return OK after a successful ManageSieve SASL authentication flow (#187)
  • Case-insensitive search in settings API (#487)
  • Fix session.rcpt.script default variable name (#502)

[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

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