NEWS: Add news for 2.3.19

diff --git a/NEWS b/NEWS
index ddd330daea1399175f80bf2d415624ec4acd4423..cccb079678605b1a152eb9f948ecb23c31483110 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,86 @@
+v2.3.19 2022-05-04  Aki Tuomi <aki.tuomi@open-xchange.com>
+
+       + Added mail_user_session_finished event, which is emitted when the mail
+         user session is finished (e.g. imap, pop3, lmtp). It also includes
+         fields with some process statistics information.
+         See https://doc.dovecot.org/admin_manual/list_of_events/ for more
+         information.
+       + Added process_shutdown_filter setting. When an event matches the filter,
+         the process will be shutdown after the current connection(s) have
+         finished. This is intended to reduce memory usage of long-running imap
+         processes that keep a lot of memory allocated instead of freeing it to
+         the OS.
+       + auth: Add cache hit indicator to auth passdb/userdb finished events.
+         See https://doc.dovecot.org/admin_manual/list_of_events/ for more
+         information.
+       + doveadm deduplicate: Performance is improved significantly.
+       + imapc: COPY commands were sent one mail at a time to the remote IMAP
+         server. Now the copying is buffered, so multiple mails can be copied
+         with a single COPY command.
+       + lib-lua: Add a Lua interface to Dovecot's HTTP client library. See
+         https://doc.dovecot.org/admin_manual/lua/ for more information.
+       - auth: Cache lookup would use incorrect cache key after username change.
+       - auth: Improve handling unexpected LDAP connection errors/hangs.
+         Try to fix up these cases by reconnecting to the LDAP server and
+         aborting LDAP requests earlier.
+       - auth: Process crashed if userdb iteration was attempted while auth-workers
+         were already full handling auth requests.
+       - auth: db-oauth2: Using %{oauth2:name} variables caused unnecessary
+         introspection requests.
+       - dict: Timeouts may have been leaked at deinit.
+       - director: Ring may have become unstable if a backend's tag was changed.
+         It could also have caused director process to crash.
+       - doveadm kick: Numeric parameter was treated as IP address.
+       - doveadm: Proxying can panic when flushing print output. Fixes
+         Panic: file ioloop.c: line 865 (io_loop_destroy): assertion failed:
+         (ioloop == current_ioloop).
+       - doveadm sync: BROKENCHAR was wrongly changed to '_' character when
+         migrating mailboxes. This was set by default to %, so any mailbox
+         names containing % characters were modified to "_25".
+       - imapc: Copying or moving mails with doveadm to an imapc mailbox could
+         have produced "Error: Syncing mailbox '[...]' failed" Errors. The
+         operation itself succeeded but attempting to sync the destination
+         mailbox failed.
+       - imapc: Prevent index log synchronization errors when two or more imapc
+         sessions are adding messages to the same mailbox index files, i.e.
+         INDEX=MEMORY is not used.
+       - indexer: Process was slowly leaking memory for each indexing request.
+       - lib-fts: fts header filters caused binary content to be sent to the
+         indexer with non-default configuration.
+       - doveadm-server: Process could hang in some situations when printing
+         output to TCP client, e.g. when printing doveadm sync state.
+       - lib-index: dovecot.index.log files were often read and parsed entirely,
+         rather than only the parts that were actually necessary. This mainly
+         increased CPU usage.
+       - lmtp-proxy: Session ID forwarding would cause same session IDs being
+         used when delivering same mail to multiple backends.
+       - log: Log prefix update may have been lost if log process was busy.
+         This could have caused log prefixes to be empty or in some cases
+         reused between sessions, i.e. log lines could have been logged for the
+         wrong user/session.
+       - mail_crypt: Plugin crashes if it's loaded only for some users. Fixes
+         Panic: Module context mail_crypt_user_module missing.
+       - mail_crypt: When LMTP was delivering mails to both recipients with mail
+         encryption enabled and not enabled, the non-encrypted recipients may
+         have gotten mails encrypted anyway. This happened when the first
+         recipient was encrypted (mail_crypt_save_version=2) and the 2nd
+         recipient was not encrypted (mail_crypt_save_version=0).
+       - pop3: Session would crash if empty line was sent.
+       - stats: HTTP server leaked memory.
+       - submission-login: Long credentials, such as OAUTH2 tokens, were refused
+         during SASL interactive due to submission server applying line length
+         limits.
+       - submission-login: When proxying to remote host, authentication was not
+         using interactive SASL when logging in using long credentials such as
+         OAUTH2 tokens. This caused authentication to fail due to line length
+         constraints in SMTP protocol.
+       - submission: Terminating the client connection with QUIT command after
+         mail transaction is started with MAIL command and before it is
+         finished with DATA/BDAT can cause a segfault crash.
+       - virtual: doveadm search queries with mailbox-guid as the only parameter
+         crashes: Panic: file virtual-search.c: line 77 (virtual_search_get_records):
+         assertion failed: (result != 0)
+
 v2.3.18 2022-02-03  Aki Tuomi <aki.tuomi@open-xchange.com>
 
        * Removed mail_cache_lookup_finished event. This event wasn't especially