dovecot: update to version 2.3.20
v2.3.20 2022-12-22 Aki Tuomi <aki.tuomi@open-xchange.com>
+ Add dsync_features=no-header-hashes. When this setting is enabled and
one dsync side doesn't support mail GUIDs (i.e. imapc), there is no
fallback to using header hashes. Instead, dsync assumes that all mails
with identical IMAP UIDs contains the same mail contents. This can
significantly improve dsync performance with some IMAP servers that
don't support caching Date/Message-ID headers.
+ lua: HTTP client has more settings now, see
https://doc.dovecot.org/admin_manual/lua/#dovecot.http.client
+ replicator: "doveadm replicator status" command now outputs when the
next sync is expected for the user.
- LAYOUT=index: duplicate GUIDs were not cleaned out. Also the list
recovery was not optimal.
- auth: Assert crash would occur when iterating multiple userdb
backends.
- director: Logging into director using master user with
auth_master_user_separator character redirected user to a wrong
backend, unless master_user_separator setting was also set to the same
value. Merged these into auth_master_user_separator.
- dsync: Couldn't always fix folder GUID conflicts automatically with
Maildir format. This resulted in replication repeatedly failing
with "Remote lost mailbox GUID".
- dsync: Failed to migrate INBOX when using namespace prefix=INBOX/,
resulting in "Remote lost mailbox GUID" errors.
- dsync: INBOX was created too early with namespace prefix=INBOX/,
resulting a GUID conflict. This may have been resolved automatically,
but not always.
- dsync: v2.3.18 regression: Wrong imapc password with dsync caused
Panic: file lib-event.c: line 506 (event_pop_global):
assertion failed: (event == current_global_event)
- imapc: Requesting STATUS for a mailbox with imapc and INDEXPVT
configured did not return correct (private) unseen counts.
- lib-dict: Process would crash when committing data to redis without
dict proxy.
- lib-mail: Corrupted cached BODYSTRUCTURE caused panic during FETCH.
Fixes: Panic: file message-part-data.c: line 579 (message_part_is_attachment):
assertion failed: (data != NULL). v2.3.13 regression.
- lib-storage: mail_attribute_dict with dict-sql failed when it tried to
lookup empty dict keys.
- lib: ioloop-kqueue was missing include breaking some BSD builds.
- lua-http: Dovecot Lua HTTP client could not resolve DNS names in mail
processes, because it expected "dns-client" socket to exist in the
current directory.
- oauth2: Using %{oauth2:name} variables could cause useless
introspections.
- pop3: Sending POP3 command with ':' character caused an assert-crash.
v2.3.18 regression.
- replicator: Replication queue had various issues, potentially causing
replication requests to become stuck.
- stats: Invalid Prometheus label names were created with specific
histogram group_by configurations. Prometheus rejected these labels.
v2.3.19.1 2022-06-14 Aki Tuomi <aki.tuomi@open-xchange.com>
- doveadm deduplicate: Non-duplicate mails were deleted.
v2.3.19 regression.
- auth: Crash would occur when iterating multiple backends.
Fixes: Panic: file userdb-blocking.c:
line 125 (userdb_blocking_iter_next): assertion failed: (ctx->conn != NULL)
v2.3.19 2022-05-10 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)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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