BM-22599: Fixes: Unable to post to a group containing only a subgroup without an email address.
BM-23608: Fixes: The frequency bonus in the address suggestion weighting is not taken into account.
BM-23699: Fixes: Error in the logs when expanding or collapsing a folder tree.
BM-23840: Fixes: Emails with very long subject lines cause a database processing error in the conversation view.
BM-23844: Fixes: Error when previewing EML-format attachments.
BM-23857: Fixes: When a first name followed by an 'R' is entered in the recipient field, the results are prefixed with "rong >".
BM-23877: Fixes: Inconsistency in the results displayed when using the "read" or "not deleted" system filters (filters that exclude emails from the trash's double-bottom from search results).
BM-23748: Fixes: A size calculation error in email body storage that caused MAPI synchronization issues.
BM-23869: Fixes: Outlook synchronization freezes when marking an email as read or unread.
BM-23902: Fixes: The offline address book (OAB) client cache was not working properly; each client was re-downloading the entire OAB. The cache is now being used correctly, and download errors are being reported.
BM-23903: Fixes: Incorrect and overly verbose logs when decoding MAPI responses, for more reliable diagnostics.
Sending emails from Outlook to a very large number of recipients now works correctly.
Improved robustness and performance for large-scale Outlook synchronizations (during migrations): timeouts, cache sizes, and other internal parameters are now adjustable settings; the address book cache has been expanded to reduce the load on keydb; email bodies are read directly from object storage; and query processing makes better use of virtual threads.
Fixed several internal errors (NullPointerException when notifying about a deleted email, conversion errors related to folder properties) that could interrupt synchronization.
BM-23803: Fixes: When sending a quick reply (SmartReply) to an email in which only one recipient is invalid (does not exist or has been deleted), the non-delivery notification is not received, and the email remains in the Outbox with an error status, even though it is successfully delivered to the valid recipients.
BM-23897: Fixes: A blocking call on the server's event loop during the processing of Ping commands could degrade the responsiveness of all mobile connections.
Fix: A single device can no longer open multiple simultaneous push orders, which prevents unnecessary server-side resource consumption.
BM-23889: Fixes: The bm-cli mail delete-message command does not use the required quotes for the parameters.
New group size command that calculates the total size of the mailboxes of a group's members; the command returns the sum of the members' mailboxes and the mailboxes to which they are subscribed.
New command bm-cli mapi-sync-monitor to monitor MAPI synchronization.
BM-23244 Added an Outlook compatibility warning to the shared mailbox sharing preferences: only the sharing rights "Can update the shared mailbox and manage sharing" and "All rights on the shared mailbox" allow access from Outlook. ↳ For further information seeEditing shared mailboxes > Sharing and delegation.
BM-23808 Fix: Improved reliability of non-delivery reports ("NDR" emails) regardless of the originating client (webmail, Outlook, mobile): Fixed errors that prevented the report from being sent or caused it to fail. Add a Message-ID header if it is missing from the email.
BM-23815: Fixes: Failure to delete a mail app folder when associated containers are missing from the database.
BM-23835: Fixes: Infinite loop with error stack in the logs when processing a delayed send scheduled by a deleted user.
BM-23861: Fixes: The original email attached to the non-delivery report may cause the delivery process to fail.
The limit on the number of recipients per email has been increased to 2,000.
BM-23593: Fix: Remove spaces at the beginning and end of message-id to avoid issues with the API.
BM-23794: Fixes: Failure of the hotupgradedelete-drafts-outbox-indexed-docs when subtree containers are missing.
BM-23799: Fixes: Cloning could delete the external username assigned to a directory entry; email identities created prior to version 5.5.11 are also ignored when restoring a clone.
BM-23805: Fixes: After deleting and recreating an account, the account can no longer send emails, neither internal nor external.
↳ Fix for the milter directory cache: the Sender header added during a "send on behalf" send contained a guessed address instead of the actual mailbox address, and invalidating the cache was resource-intensive and could leave entries out of date.