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5.7.1

Version published 2026/09/03​

Changelog published on 2026/09/03​

BlueMind Webmail (Mail App)​

  • 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-24104: Fixes: Failure to delete a draft in conversation mode.

Calendar​

  • BM-24075: Fixes: A user with permissions on a shared mailbox does not receive event invitations sent to that mailbox.

Administration / Architecture​

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.

IMAP​

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

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.

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.

Mail server​

  • 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​

Subscriptions​

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