- v2.1.11+ had a race condition where it sometimes overwrote data in
dovecot.index.cache file. This could have caused Dovecot to return
the same cached data to two different messages.
- mdbox: Fixes to handling duplicate GUIDs during index rebuild
- lmtp proxy: Fixed hanging if remote server was down.
- doveadm: Various fixes to handling doveadm-server connections.
- auth: passdb imap was broken in v2.1.10.
- director: In some conditions director may have disconnected from
another director (without logging about it), thinking it was sending
invalid data.
- imap: Various fixes to listing mailboxes.
- login processes crashed if there were a lot of local {} or remote {}
settings blocks.
- Full text search indexing might have failed for some messages,
always causing indexer-worker process to run out of memory.
- fts-lucene: Fixed handling SEARCH HEADER FROM/TO/SUBJECT/CC/BCC when
the header wasn't lowercased.
- fts-squat: Fixed crash when searching a virtual mailbox.
- pop3: Fixed assert crash when doing UIDL on empty mailbox on some
setups.
- auth: GSSAPI RFC compliancy and error handling fixes.
- Various fixes related to handling shared namespaces
- imap: Mailbox names were accidentally sent as UTF-8 instead of mUTF-7
in previous v2.1.x releases for STATUS, MYRIGHTS and GETQUOTAROOT commands.
- lmtp proxy: Don't timeout connections too early when mail has a lot of RCPT TOs.
- director: Don't crash if the director is working alone.
- shared mailboxes: Avoid doing "@domain" userdb lookups.
- doveadm: Fixed crash with proxying some commands.
- fts-squat: Fixed handling multiple SEARCH parameters.
- imapc: Fixed a crash when message had more than 8 keywords.
- imapc: Don't crash on APPEND/COPY if server doesn't support UIDPLUS.
- director: Don't crash with quickly disconnecting incoming director
connections.
- mdbox: If mail was originally saved to non-INBOX, and namespace
prefix is non-empty, don't assert-crash when rebuilding indexes.
- sdbox: Don't use more fds than necessary when copying mails.
- auth: Fixed crash with DIGEST-MD5 when attempting to do master user
login without master passdbs.
- Several fixes to mail_shared_explicit_inbox=no
- imapc: Use imapc_list_prefix also for listing subscriptions.
- v2.1.5: Using "~/" as mail_location or elsewhere failed to actually
expand it to home directory.
- dbox: Fixed potential assert-crash when reading dbox files.
- trash plugin: Fixed behavior when quota is already over limit.
- mail_log plugin: Logging "copy" event didn't work.
- Proxying to backend server with SSL: Verifying server certificate
name always failed, because it was compared to an IP address.
expand it to home directory.
- dbox: Fixed potential assert-crash when reading dbox files.
- trash plugin: Fixed behavior when quota is already over limit.
- Proxying to backend server with SSL: Verifying server certificate
name always failed, because it was compared to an IP address.
- director: A lot of fixes and performance improvements
- mbox: Deleting a mailbox didn't delete its index files.
- pop3c: TOP command was sent incorrectly
- trash plugin didn't work properly
- LMTP: Don't add a duplicate Return-Path: header when proxying.
- listescape: Don't unescape namespace prefixes.
- Proxying SSL connections crashed in v2.1.[23]
- fts-solr: Indexing mail bodies was broken.
- director: Several changes to significantly improve error handling
- doveadm import didn't import messages' flags
- mail_full_filesystem_access=yes was broken
- Make sure IMAP clients can't create directories when accessing
nonexistent users' mailboxes via shared namespace.
- Dovecot auth clients authenticating via TCP socket could have failed
with bogus "PID already in use" errors.
- doveadm sync: If mailbox was expunged empty, messages may have
become back instead of also being expunged in the other side.
- imap_id_* settings were ignored before login.
- Several fixes to mailbox_list_index=yes
- Previous v2.1.x didn't log all messages at shutdown.
- acl plugin + autocreated mailboxes crashed when listing mailboxes
- doveadm force-resync: Don't skip autocreated mailboxes (especially
INBOX).
- If process runs out of fds, stop listening for new connections only
temporarily, not permanently (avoids hangs with process_limit=1
services)
- auth: passdb imap crashed for non-login authentication (e.g. smtp).
- dbox: Fixed error handling when saving failed or was aborted
- IMAP: Using COMPRESS extension may have caused assert-crashes
- IMAP: THREAD REFS sometimes returned invalid (0) nodes.
- dsync: Fixed handling non-ASCII characters in mailbox names.
- director: With >2 directors ring syncing might have stalled during
director connect/disconnect, causing logins to fail.
- LMTP client/proxy: Fixed potential hanging when sending (big) mails
- Compressed mails with external attachments (dbox + SIS + zlib) failed
sometimes with bogus "cached message size wrong" errors.
major changes since 2.0.x:
plugins now use UTF-8 mailbox names rather than mUTF-7
auth_username_format default changed to %Lu
solr full text search backend changed to use mailbox GUIDs instead of
mailbox names, requiring reindexing everything
v2.0.14: Index reading could have eaten a lot of memory in some
situations
mbox: Fixed crash during mail delivery when mailbox didn't yet have
GUID assigned to it.
zlib+mbox: Fetching last message from compressed mailboxes crashed.
userdb extra fields can now return name+=value to append to an
existing name
script-login attempted an unnecessary config lookup, which usually
failed with "Permission denied".
lmtp: Fixed parsing quoted strings with spaces as local-part for
MAIL FROM and RCPT TO.
imap: FETCH BODY[HEADER.FIELDS (..)] may have crashed or not
returned all data sometimes.
ldap: Fixed random assert-crashing with with sasl_bind=yes.
Fixes to handling mail chroots
Fixed renaming mailboxes under different parent with FS layout when
using separate ALT, INDEX or CONTROL paths.
zlib: Fixed reading concatenated .gz files.
