We are pleased to release v2.3.10 of Dovecot. Please find it from
locations below:
https://dovecot.org/releases/2.3/dovecot-2.3.10.tar.gz
https://dovecot.org/releases/2.3/dovecot-2.3.10.tar.gz.sig
Binary packages in https://repo.dovecot.org/
Docker images in https://hub.docker.com/r/dovecot/dovecot
Aki Tuomi
Open-Xchange oy
---
* Disable retpoline migitations by default. These can cause severe
? performance regressions, so they should be only enabled when
? applicable.
* IMAP MOVE now commits transactions in batches of 1000 mails. This
? helps especially with lazy_expunge when moving a lot of mails. It
? mainly avoids situations where multiple IMAP sessions are running the
? same MOVE command and duplicating the mails in the lazy_expunge folder.
? With this change there can still be some duplication, but the MOVE
? always progresses forward. Also if the MOVE fails at some point, the
? changes up to the last 1000 mails are still committed instead of
? rolled back. Note that the COPY command behavior hasn't changed,
? because it is required by IMAP standard to be an atomic operation.
* IMAP EXPUNGE and CLOSE now expunges mails in batches of 1000 mails.
? This helps especially with lazy_expunge when expunging a lot of mails
? (e.g. millions) to make sure that the progress always moves forward
? even if the process is killed.
* Autoexpunging now expunges mails in batches of 1000 mails. This helps
? especially with lazy_expunge when expunging a lot of mails
? (e.g. millions) to make sure that the progress always moves forward
? even if the process is killed.
+ Add tool for generating sysreport called dovecot-sysreport.
? This generates a bundle of information usually needed for support
? requests.
+ Add support for the new IMAP \Important SPECIAL-USE flag (RFC 8457).
+ Add metric { group_by } setting. This allows automatically creating
? new metrics based on the fields you want to group statistics by.
? NOTE: This feature is considered experimental and syntax is subject
? to change in future release.
+ auth: Support SCRAM-SHA-256 authentication mechanism.
+ imap: Support the new IMAP STATUS=SIZE extension.
+ Use TCP_QUICKACK to reduce latency for some TCP connections.
+ quota-status: Made the service more robust against erroneous use with
? Postfix ACL policies other than smtpd_recipient_restrictions.
+ Add "revision" field support to imap_id_send setting. Using
? "revision *" will send in IMAP ID command response the short commit
? hash of the Dovecot git source tree HEAD (same as in dovecot --version).
+ IMAP ENVELOPE includes now all addresses when there are multiple
? headers (From, To, Cc, etc.) The standard way of having multiple
? addresses is to just list them all in a single header. It's
? non-standard to have multiple headers. However, since MTAs allow these
? mails to pass through and different software may handle them in
? different ways, it's better from security point of view to show all
? the addresses.
+ Event filters now support using "field_name=" to match a field that
? doesn't exist or has an empty value. For example use "error=" to
match
? only events that didn't fail.
- acl: INBOX ACLs shouldn't apply for IMAP GETMETADATA/SETMETADATA
? commands.
- cassandra: CASS_ERROR_SERVER_WRITE_FAILURE error should also be
? treated as "uncertain write failure".
- dict-redis: Using quota_clone configured with dict-redis could have
? crashed when Redis responded slowly.
- imap-hibernate: Communication trouble with imap-master leads to
? segfault.
- imap-hibernate: Unhibernation retrying wasn't working.
- imap: Fixed auth lookup privilege problem when imap process was reused
? and user was being un-hibernated.
- Fix potential crash when copying/moving mails within the same folder.
? This happened only when there were a lot of fields in dovecot.index.cache.
- lib-index: Recreating dovecot.index.cache file could have crashed when
? merging bitmask fields.
- lib-index: Using public/shared folders with INDEXPVT configured to use
? private \Seen flags, trying to search seen/unseen in an empty folder
? crashes with segfault.
- lib-mail: Large base64-encoded mails weren't decoded properly.
? This could have affected searching/indexing mails and message snippet
? generation.
- lib-mail: Message with only quoted text could have caused message
? snippet to ignore its 200 character limit and return the entire
? message. This was added also to dovecot.index.cache file, which
? increased disk space and memory usage unnecessarily.
? v2.3.9.2 regression (previous versions cached the quoted snippet as
? empty). In a large mail quoted text could have become wrongly added
? to the snippet, possibly mixed together with non-quoted text.
- lib-smtp: client could have assert-crashed if STARTTLS handshake
? finished earlier than usually.
- lib-ssl-iostream: remove -static flag for lib-ssl-iostream linking to
? prevent a compile issue.
- lib-storage: Mailbox synchronization may have assert-crashed in some
? rare situations.
- lib-storage: mdbox didn't preserve date.saved with dsync.
- lib: Don't require EAI_{ADDRFAMILY,NODATA}, breaks FreeBSD
- master: Some services could respawn unthrottled if they crash during
? startup.
- push-notification: Do not send push_notification_finished event if
? nothing was done. This happens when mail transaction is started and
? ended with no changes.
- quota-status: Addresses with special characters in the local part caused
? problems in the interaction between Postfix and Dovecot. Postfix sent
? its own internal representation in the recipient field, while Dovecot
? expected a valid RFC5321 mailbox address.
- submission-login: SESSION was not correctly encoded field for the
? XCLIENT command. Particularly, a '+' character introduced by the
? session ID's Base64 encoding causes problems.
- submission: Fix submission_max_mail_size to work correctly on 32-bit
? systems.
- submission: Trusted connections crashed in second connection's EHLO
? if submission-login { service_count } is something else than 1 (which
? is the default).
- submission: XCLIENT command was never used in the protocol exchange
? with the relay MTA when submission_backend_capabilities is configured,
? even when the relay MTA was properly configured to accept the XCLIENT
? command.
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