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5.7.3

Version publiée le 01/10/2026​

Changelog published on October 1st 2026​

BlueMind Webmail (Mail App)​

  • BM-23774: Fixes: Displays the original creation date of the draft instead of the actual send date on a sent email.
  • BM-22778: Fixes: Searching for emails using wildcards (*) now works correctly.
  • BM-23642: Fixes: Deleting an attachment whilst forwarding an email causes the “...” button, used to expand the conversation, to disappear.
  • BM-23881: Improvement: Search terms are now highlighted in the body of plain-text emails.
  • BM-24252: Fixes: Resizing the window causes the "..." button used to expand the conversation to disappear.
  • Fixes: Crash on start-up caused by a residual access right on a deleted mailbox.
  • Fixes: A pop-up window would remain stuck at the edge of the screen next to a wide element.
  • Fixes: The search for delegates incorrectly included the user themselves and their already configured delegates in the suggestions.

Preferences​

  • Fixes: Inability to have more than one out-of-office or forwarding rule active per mailbox.

BlueMind thick client (Electron)​

  • BM-23976: Fixes: When the network context changes, if the BlueMind client (Electron) is not restarted (and remains open), emails may no longer be sent, with a draft becoming stuck in a state where it cannot be saved, thereby preventing all other drafts from being saved.

MAPI / Outlook​

  • BM-24004: Fixes: Loss of an email saved in .msg format when dragged and dropped onto an appointment in Outlook.
  • BM-24250: Fixes: Confirming a calendar event causes the event to disappear in Outlook.
  • BM-23321: Fixes: Duplicate entries in the mapping of properties named ‘Outlook’ (pidmapping), which could prevent the installation upgrade from completing.
  • BM-21721: Fixes: Loss of organizer on single appointment.
  • Fixes: Inability to attach a file that has already been attached to an event when the user does not have the permission to link files, and the removal of existing attachments from the event.
  • Fixes: A meeting may end up with no organiser or participants when Outlook sends a meeting request without an username.
  • Fixes: A contact search in the global directory could, for example due to a typo in an address, return all records in the domain, causing significant slowdowns in Outlook.
  • Improved reliability and performance of searches in the Global Address List (GAL) from Outlook during periods of high concurrent usage.

Mobile Devices (EAS)​

  • BM-24151: Fixes: Loss of the assistant, car, radio and company telephone number fields in contact records when synchronising from BlueMind to a mobile device.
  • BM-24153: Fixes: Calendar synchronisation (reminder not synchronised, errors with annual and monthly recurring events, organiser incorrectly added to the list of attendees, attendee statuses).
  • BM-24154: Fixes: Description of synchronised tasks.
  • BM-24159: Fixes: The reminder was not synchronised for a one-off occurrence of a recurring event.
  • BM-24155: Fixes:
    • Tags are not synchronised between BlueMind and the mobile device for events, contacts and tasks
    • A duplicate tag is created when a domain tag already bears the name used
  • BM-24255: Fixes: Outlook mobile clients freeze during folder configuration and synchronisation.

Thunderbird​

  • BM-24223: Correction to the title of the BlueMind Preferences tab.

Video Conferencing​

  • Built-in integration of the Nextcloud Talk videoconferencing provider.
  • BM-24293: Fixes: Removal of the Pexip session associated with an event when that event is deleted.

Administration / Architecture​

Administration console​

  • BM-23010:
    • Feature: The mail app management tab for a user or a shared mailbox now allows you to manage delegations for that user or mailbox.
      See the relevant sections:
    • Mailbox sharing
    • Editing shared mailboxes > Sharing and delegation
    • Fixes:
      • A delegation rule could be lost or confused with the out-of-office/redirection rule
      • An obsolete calendar sharing right persisted after a delegation was deleted
  • BM-24236: Fixes:
    • Calendar settings tab missing from the shared mailboxes management page
    • “Access denied” error when publishing the calendar URL for a shared mailbox
  • BM-24284: Fixes: A 404 error blocks the user edit screen in the administration console when an access right remains on a deleted mailbox.
  • BM-24181: Fixes: After a password change in AD, the old password is not immediately invalidated for logging into the BlueMind online app. 
  • BM-24214: Fixes: Inconsistency during the connection test in GC mode; the test button does not take the mode into account.
  • BM-24217: Fixes: A standard domain administrator was able to change the import type — only admin0 should be authorised to make this change.
  • BM-24218: Fixes: The label for the ‘split domain’ field remains visible in GC mode even though the field is hidden.

Clone​

  • Numerous reliability fixes for server cloning that could have led to data loss or a complete halt to the cloning process: user settings not restored, shared mailbox folders incorrectly reconstructed, organizational units or groups deleted but mistakenly recreated after cloning, freezes caused by concurrent access during restoration.
  • The sequential cloning mode (tail) now restores changes made after cloning began: system configuration, backup retention policy, scheduled jobs, API keys, Outlook MAPI named properties and the global administrator’s MFA username.
  • Fixes: Cloning failure during monitoring installation.
  • Fixes: Postfix rejecting emails addressed to mailboxes that have just been restored at the very end of the cloning process.
  • Improvement: Added a feature allowing user sessions to be transferred from one server to another, thereby avoiding a forced reconnection when switching servers.

Email filtering (Milter)​

  • BM-24229: Fixes: Delivery receipts are not delivered when journaling is enabled
  • BM-23959: Fixes: An email sent from Outlook by a delegate (on behalf of) is rejected by certain external servers.

Server upgrade​

  • BM-24132: Fixed the major upgrade script, which now performs a checkpoint before stopping the service.
  • BM-24246: Fixed an API key upgrade task that could be skipped on certain installations.

Upgrade (Keycloak / authentication)​

  • BM-24234: Fixes: A single domain failure halts the entire Keycloak upgrade.

Backup and Restore (DataProtect)​

  • BM-24254: Fixes: Saving email content (SDS) is blocked following the replacement or renaming of a mail server.
  • BM-24192: Fixes:
    • A valid backup generation is incorrectly deleted following a simple, non-blocking warning.
    • Backup status now visible in the administration console and in the monitoring interface.

Monitoring​

  • Fixes: Correct restart of the monitoring stack (Mimir/Grafana) following a server upgrade.

Security​

  • (Critical): Sorting of emails and conversations now only accepts known columns. An unknown column is rejected with the error INVALID_PARAMETER.
  • (High): the resolution of external entities and DTDs is disabled in the XML parsers of the DAV server (CalDAV/CardDAV), in net.bluemind.utils.DOMUtils (CAS, MAPI), in the MAPI tags and in the BigBlueButton client.
  • (Critical): Queries on scheduled jobs pass the domain as a bound parameter. A domain administrator can now only see runs within their own domain.
  • (Medium): The directory (AD/LDAP) password cache is cleared every time a password is changed in BlueMind. It now stores an HMAC hash instead of the plaintext password. Its duration can be set using core.security.directory-password-cache-ttl (maximum 20 minutes). (BM-24181)
  • (Minor): Only the global administrator can change the AD import type (DC/GC). (BM-24217)
  • (Medium): The BM* identity headers sent by the client are removed before processing.
  • (Hardening): requests for file sharing and password expiry now use related parameters.
  • (Medium): The web proxy now denies access to /grafana/metrics. This issue exposed Grafana’s internal metrics without authentication; local data collection via Alloy is not affected.
  • Upgrades:
    • PostgreSQL 18.6
    • Netty 4.2.18
    • Vertx 5.1.8
    • Monitoring stack:
      • Grafana 13.2.3
      • Mimir 3.2.1
      • Alloy 1.20.1
      • Tempo 3.1.0
      • Loki 3.7.8
      • OpenTelemetry Java agent 2.31.1