stalwartlabs/stalwart v0.16.0

on GitHub

[0.16.0] - 2026-04-20

This version includes multiple breaking changes. If you are upgrading from v0.15.x and below, please read the upgrading documentation for more information on how to upgrade from previous versions.

Added

• Web UI rewritten from the ground up using the JMAP management API, featuring a refreshed design and addressing 76 enhancement requests and bug fixes.
• CLI rewritten from the ground up to use the JMAP management API.
• Security enhancements:
  • Password strength enforcement using the zxcvbn algorithm
  • Password expiration, rotation policies and IP address restrictions for user accounts
  • App Passwords with limited access (#1609), labels (#2255), IP address restrictions and expiration dates
  • API keys with limited access, labels, IP address restrictions and expiration dates
  • Auto-ban comments and details about the triggering event (#1321)
  • Auto-ban expiration after a configurable time period (#964)
• DNS Management:
  • Automatic DNS management of MX, TXT, CNAME, SRV, CAA and TLSA records (#463 #1017 #1419 #2438 #1370 #1406 #1371)
  • Automatic update of TLSA records when ACME certificates change (#1664)
  • RFC2136 SIG(0) support (#856)
  • Route53 provider support (contributed by @jimmystewpot)
  • Google Cloud DNS provider support (contributed by @jimmystewpot)
  • Bunny provider support (contributed by @angeloanan)
  • Porkbun provider support (contributed by @jeffesquivels)
  • DNSimple provider support (contributed by @NelsonVides)
  • Spaceship provider support (contributed by @matserix)
• DKIM:
  • Automatic DKIM key generation, rotation and DNS management (#368 #961)
  • Store DKIM keys in the database (#1264)
  • Ignore insecure signatures when verifying DKIM (#1068 #467)
• ACME/TLS:
  • DNS-PERSIST-01 ACME challenge support (#2837)
  • Renew certificates on demand, view certificate details (#675 #1162 #2566)
  • CAA record support (#468) with accounturi parameter (#1933)
  • TLSA records publishing restricted to 3 1 1 and 2 1 1 (#2193)
• OIDC and OAuth:
  • JWT token validation without requesting userinfo from the OIDC provider.
  • Audience (aud) claim (#2603) and scope validation support.
  • Groups support (#1448)
  • RFC 7636 - Proof Key for Code Exchange by OAuth Public Clients
• LDAP:
  • Separate filter for groups (#1841)
  • Improve support for OpenLDAP schemas (#760)
  • Improve and simplify LDAP settings (#2194 #2174)
• Directory:
  • Masked email addresses for enhanced privacy (Enterprise)
  • Domain aliases (#583)
  • E-mail alias descriptions and option to disable aliases (#506)
  • Account archiving and un-deletion (#2767) (Enterprise)
  • Per-domain directory backends (Enterprise)
• Account configuration and discovery:
  • Automatic Configuration of Email, Calendar, and Contact Server Settings (draft-mailmaint-uaautoconf-04) (#2201)
  • MS Autodiscover V2 support (#679)
• Sieve: Allow deactivating scripts without deleting them (#1251).
• Tracing: Enable events only mode (#2276)
• Clustering:
  • Automatic cluster node ID generation and management.
  • Unified cluster management (#960)
  • Outbound MTA role (#1692)

Changed

• Replaced REST API with JMAP API (#2262 #959 #1480)
• Removed support for Authenticated Received Chain (ARC) sealing (learn more).
• Directory: Removed smtp, imap and memory directory backends.
• Use aws-lc for cryptographic operations instead of ring.
• Use rustls-platform-verifier for TLS certificate verification instead of webpki (#247).

Fixed

• Directory:
  • Cannot remove built-in "admin" role from user once it was assigned (#1467)
  • Delete associated records (#963)
  • Updated Role permissions not applied (#2038)
  • Recreated account cannot log in until server is restarted (#1469)
  • Subaddressing does not work for groups (#475)
  • New LDAP aliases are rejected (#1318).
  • Validate account and group names (#2209)
• MTA:
  • RCPT TO stage settings improvements (#2217 #394)
  • Relay to IP addresses (#838)
  • Duplicate delivery inverted check
  • SASL challenge responses include invalid Go ahead text
• JMAP:
  • Fix inMailboxOtherThan query logic.
  • Fix hasAttachment search field (#2778)
• IMAP:
  • Increment argument max length to 8000 bytes
  • ACL: Add RIGHTS capability (#2762)
  • ACL: Fix ACL SET permission override.
• WebDAV:
  • Return 304 NOT_MODIFIED on If-None-Match
  • Use RFC 2616 instead of RFC 1123 for date formatting
  • Fix ACL container/item mismatch in reports.
  • CalDAV: Allow organized properties to be present in PUT requests if they are equal to the existing ones.
  • CalDAV: Enforce cumulative iCalendar instances cap in CalDAV free-busy REPORT handler
• Configuration: Prefix parsing issues (#2495)
• OIDC: JWKS Exposes Symmetric Signing Key
• SQLite: Fix thread pool exhaustion.
• PostgreSQL: Use clean recycling method on connection pool
• Meilisearch: Make id sorteable.
• ACME: Fix wrong origin for subdomain updates (#2360)
• Spam filter: Skip invalid messages during training.
• Calendar: Include minutes in localized invite templates (#2828)
• HTTP: Fix 204 CORS preflight responses

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