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5.6.4

Version published 2026/09/03

Changelog published on 2026/09/03

BlueMind Webmail (Mail App)

  • BM-23722: Fixes: Issue with the size of the image displayed during a drag-and-drop.
  • BM-23759: Fixes: When the email list is sorted by size, the section separators display the symbols without the corresponding size.
  • BM-23825 : Fixes: Quota warning incorrectly displayed for mailboxes configured for external routing—third-party email.
  • BM-23947: Fixes: In conversation view, a built-in image in an email with the wrong Content-id is displayed below the email when it is collapsed.
  • BM-24106: Fixes: Missing scroll bar on the mail app home and actions screens during multiple selections.

Preferences

  • BM-23437: Fixes: Layout issue in the filter rule creation window in mobile mode.

Calendar

  • BM-23989: Fixes: Inconsistency in email notifications for modified events.
  • BM-23996: Fixes: Incorrect month in an event's recurrence in an ICS export.
  • BM-24039: Fixes: Interface for the pending invitation counter when the user has a large number of shared calendars.
    The "Pending Invitations" badge now correctly takes into account shared calendars with write access—including those shared through a group—to allow a delegate to respond to invitations on behalf of the owner.
  • BM-22982: Fixes: Empty blocks appear when printing a PDF of a shared calendar with "view only" permissions.
  • BM-24075: Fixes: A user with permissions on a shared mailbox does not receive event invitations sent to that mailbox.
  • The day of the week for a weekly recurrence rule is now displayed correctly, regardless of the language configured on the server.

Preferences

  • BM-23614: Fixes: Groups without an email address (consisting solely of members) do not appear in search results when sharing a calendar.
  • BM-24126: Fixes: Links from the application to the documentation.

CalDAV

  • BM-24039: Fix: A CalDAV request to the calendar root no longer fails entirely due to a single obsolete subscription or one whose owner has been suspended; only that resource is now ignored.

Mobile Devices (EAS)

  • BM-24078: Fixes: Error when deleting or upgrading the status of an "all-day" event occurrence from an Android mobile device.

Outlook / MAPI

  • BM-23941: Performance improvement that prevents the generation of the offline address book (OAB) or the loading of contact records from overloading the server and slowing down Outlook/EWS clients.
  • BM-23623: Fixes: Duplicate emails after deletion in Outlook 2019.
  • BM-24025: Fixes: An event whose attachment has been moved to file storage is not properly resynchronized in the organizer's Outlook.
  • BM-24113: Fixes: When an administrator confirms a resource reservation, a notification is sent indicating that the reservation has been canceled.

Administration / Architecture

Directory (AD)

  • BM-24129: Fixes: When an import error occurs—for example, while creating a shared mailbox—the AD import task incorrectly reports that it was successful.
  • An Active Directory import no longer incorrectly blocks the license verification process for an administrator who does not have the subscription management role.

Administration console

  • BM-23048: Fix/Improvement: Scheduled jobs (e.g., (backups) are no longer sent from the internal technical address no-reply@global.virt, which is often flagged as spam; a dedicated sending address can now be configured.
  • BM-23878: Fixes: Issue with the "Log in as" link in the administration console.

core

  • BM-24010: Fixes: The cache is not invalidated when a user is deactivated; as a result, a deactivated user can still send emails via SMTP.
  • BM-24125: Fix: Renaming a user no longer fails due to a duplicate email address when the domain differs from the default alias.
  • BM-24128: Loss of shared mailbox identities.

IMAP

  • BM-24170: Performance improvement: Avoid a complete reordering of folders at the checkpoint when the container version remains unchanged.

Indexing (Elasticsearch)

  • BM-24134: Fix: A reindexing scheduled job before a domain switches to the new alias mode (ring) is now properly ignored instead of running with outdated logic.

Routing (crp)

  • BM-24144: Improvement: The access log now shows the target core's IP address, the cause of a failure, and the duration of the request.
  • BM-24145: Fix: The Postfix routing component no longer leaks a monitoring connection with every call.

Backup and Restore (Dataprotect)

  • BM-24162: Fixes: Calendar restoration fails for events whose tag does not yet appear in the session.
  • BM-23953: Fixes: After an upgrade from version 4 to 5, the backup task reports that it has completed successfully even though some copy tasks have failed.

Milter

  • BM-23997: Fixes:
    • The spam filter/Milter crashes when encountering certain unknown calendar events.
    • A concurrency bug that could cause instability when rewriting sender addresses (SRS) if multiple emails were being processed at the same time.

Mail server

  • BM-24100: Fixes: Emails lost during multiple redirects.
  • BM-24138: Fixes: Some emails were marked as sent even though they had temporarily failed (e.g., server unreachable).
    Fix: Emails are now held in the queue, and the server automatically retries after a certain amount of time.

Operation

Clone (migration / installation restoration)

  • A clone of an installation no longer gets stuck indefinitely while waiting for certain keys—generated locally on the cloned installation—to be replicated.
  • Tracking the progress of a clone is now organized and manageable, with a dedicated command to monitor its progress in real time and to resume or skip a failed recording.
  • The restoration of the directory, email bodies, and the message queue is now parallelized and performed in batches, resulting in faster clones.
  • Converting a shared mailbox now correctly preserves its data location, quota, and routing when cloned.
  • A clone no longer fails when a folder tree is temporarily deleted and then recreated during a mailbox-to-shared mailbox conversion.

Installation

  • Fixed several packages (bm-lifesize, simpleaccount, bm-tbird-autoconf) that were delivered empty or did not install correctly as RPM/Debian packages.

Subscriptions

  • BM-24165: Fixes: The account count incorrectly includes shared mailboxes.

Others

  • Some unrecognized iCalendar settings (e.g., (icon links added by Thunderbird) would lose their filenames when saved again, which could corrupt subsequent attachments for the same event.