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5.6.2

Version published 2026/07/29​

Changelog published on 2026/07/29​

BlueMind Webmail (Mail App)​

  • BM-23984: Fixes: Placeholders are displayed instead of email addresses when a conversation has no username.
  • BM-23871: Fixes: Removed the BlueMind logo from the download pane for attached files.
  • BM-23986: Fixes: Double scroll bar in the composer when it is opened as a detached window.
  • BM-23906: Fixes: The text boxes extend beyond the display area in the scheduled send window on mobile.

Calendar​

  • BM-23898: Fixes: The videoconference link is duplicated in the description every time the event is edited.
  • BM-23991: Fixes: Event log out of order.

CalDAV​

  • BM-21558: Added support for recurring events in date-range searches in DAV.
  • CalDAV Reliability Improvements: Sharing a calendar did not always make it visible to the invited user; a sharing invitation could trigger a duplicate response; and certain resources without synchronization support caused the request to crash.
  • Added support for the X-Forwarded-For header in DAV.

Mobile Devices (EAS)​

  • BM-19864: Fixes: Deleting an email regarding a recurrence exception from the Samsung Mail app causes the entire series of a meeting to be rejected.

Contacts​

  • Fixes: If the user lost read access to a currently displayed address book, the recipient search would crash instead of simply ignoring that address book.

Thunderbird​

  • Upcoming Thunderbird ESR 153: Adaptation to changes in the connection manager API.

Administration / Architecture​

Administration console​

  • BM-23874: Fixes: Identical labels on scheduled jobs in the German interface.
  • BM-23676: Fixes: Domain administrators cannot create standard accounts.
  • Fixes: Inconsistency in the validation of domain settings by an external administrator in this domain, who was receiving an incorrect error message instead of the expected one.

Core​

  • Fixes: A bug that prevented certain misconfigured EAS clients from receiving a correct error response upon invalid authentication, causing them to loop indefinitely while attempting to connect.
  • Fixed an issue where creating a new mail app folder could trigger a notification before the folder was actually available, making it invisible to clients that were responding to that event.
  • Fixes: A bug that could cause certain audit entries to appear in search logs several minutes late.

Cyrusspool​

  • Fixes: During a migration, certain scenarios could result in the deletion of the only existing copy of an email without anyone noticing (the migration would still complete "successfully").

DataProtect​

  • Added an online command to rebuild a corrupted backup queue.

kafka​

  • Fix: Mail folders associated with resources (rooms, equipment) are no longer incorrectly processed by a mechanism that does not apply to them.

LDAP​

  • Fixes: Directory connection handling that could cause internal errors following a library upgrade.

MAPI​

  • BM-23941: Fixes: A bug that could slow down or even block access to the directory from Outlook if the server responded slowly.

Node​

  • Fixed the file traversal mechanism used, in particular, during data migrations, which could previously enter an infinite loop or duplicate emails in certain cases.

SDS (Object Storage)​

  • Fixed a bug that caused misleading error messages to appear in the logs during downloads that were interrupted normally (timeout, cancellation).
  • Fixed a resource release bug that occurred when a download from object storage failed, which could cause slowdowns.

Teams​

BM-23980: Fixes: Compatibility issue related to an upgrade to the Microsoft Graph library.

Users​

  • Fixes: A bug that could cause server logs to become overloaded when a client repeatedly logged in using invalid usernames.

Security​

  • Upgraded the Netty, Vert.x, Tika, and Jackson libraries.

Others​