Cyrus IMAP 3.2.0-rc1 Release Notes
**********************************

Warning: This is a beta release and may contain fun bugs.  Testing
  it out and providing feedback would be greatly appreciated, but do
  not run this on your production mail stores!

Download from GitHub:

   * https://github.com/cyrusimap/cyrus-
     imapd/releases/download/cyrus- imapd-3.2.0-rc1/cyrus-
     imapd-3.2.0-rc1.tar.gz

   * https://github.com/cyrusimap/cyrus-
     imapd/releases/download/cyrus- imapd-3.2.0-rc1/cyrus-
     imapd-3.2.0-rc1.tar.gz.sig


Major changes since the 3.0.x series
====================================

* Sieve bug fixes and features

* Replication safety improvements

* Caldav and Carddav improvements

* Support for JMAP core protocol (**RFC 8620**)

* Support for JMAP Mail (**RFC 8621**)

* Experimental support for JMAP Contacts (requires
  *jmap_nonstandard_extensions: yes* in imapd.conf(5))

* Experimental support for JMAP Calendars (requires
  *jmap_nonstandard_extensions: yes* in imapd.conf(5))

* Xapian bug fixes

* Improvements to Annotations handling

* DRAC support has been deprecated

* Support for Prometheus stats

* SNMP stats support has been deprecated

* Removed support for the Sphinx backend to squatter searches

* New cyrus.index format v16 included since 3.1.5 - adds unseen
  count and createdmodseq to index header, savedate and createdmodseq
  to index records

* Support for WebSockets

* Support for HTTP/2.0

* Experimental support for Zeroskip database format

* Intermediate mailboxes are now recorded in mailboxes database

* Conversations database format update - adds flags and internaldate
  fields, and is now versioned for future-compatibility.  You will
  need to rebuild your conversations databases with
  ctl_conversationsdb(8) and the *-b* switch to benefit from this

* IMAP FETCH accepts two new data items, MAILBOXIDS and MAILBOXES,
  which respectively return the unique ids or names of the containing
  mailboxes of each message in the sequence (for best performance,
  rebuild your conversations databases as above)

* mbpath(8) is now much more useful

* Twoskip database format now supports shared locks, and ensures
  record headers do not span disk block boundaries

* All Cyrus binaries now use real sysexits exit codes instead of
  mapping nearly everything to EX_TEMPFAIL

* CyrusDB errors now syslog the actual error instead of just
  “cyrusdb error”

* New *allowdeleted* imapd.conf(5) option (default off), which
  allows admin users to see deleted mailboxes and expunged messages
  over IMAP

* cyr_virusscan(8) now supports custom templates for notifications
  sent about infected messages that have been deleted

* imapd.conf(5) options that represent a time duration now accept
  ‘d’, ‘h’, ‘m’, ‘s’ suffixes rather than arbitrary units

* The *tls_server_cert* and *tls_server_key* imapd.conf(5) options
  now allow two certificate/key pairs (e.g. RSA and EC) to be used.
  Thanks Дилян Палаузов

* Mailbox create/delete/rename are now performed under a lock on the
  user’s namespace, to prevent races (especially during big renames)

* The cyr_info(8) *conf-lint* subcommand no longer complains about
  channel-prefixed sync options

* New *master_bind_errors_fatal* imapd.conf(5) option (default off),
  with which master will refuse to start if any of the configured
  services are unable to successfully bind their port.  The default
  and legacy behaviour is for master to start with the affected
  services disabled, and not try to start them again until a SIGHUP is
  received

* New *autocreate_acl* imapd.conf(5) option, for specifying ACLs to
  use when mailboxes are created by *autocreate_inbox_folders*

* New *zoneinfo_dir* imapd.conf(5) option, for specifying the
  directory Cyrus should look for timezone definitions in.  The
  default is to let libical find them itself.  If the *tzdist* http
  module is enabled, this option is mandatory.

* The iso-8859-1 charset is now treated as an alias for
  windows-1252, as per WHATWG Encoding for emails and websites


Updates to default configuration
================================

The cyr_info(8) *conf*, *conf-all* and *conf-default* subcommands now
accept an *-s <version>* argument to highlight imapd.conf(5) options
that are new or whose behaviour has changed since the specified
version.  We recommend using this when evaluating a new Cyrus version
to check which configuration options you will need to re-examine and
maybe change during the process.

* The *specialusealways* option is now enabled by default. It must
  explicitly be disabled for interoperability with legacy clients that
  can’t handle RFC 6154 attributes in extended LIST commands.

* The values accepted by *expunge_mode* have changed, please see the
  documentation for more information about the changes.

* The legacy GETANNOTATIONS/SETANNOTATIONS IMAP commands will no
  longer work unless *annotation_enable_legacy_commands* is enabled.

* The *outbox_sendlater* option and its functionality have been
  removed.

* The *tzdist* http module now finds its timezone data directory
  according to the new *zoneinfo_dir* imapd.conf(5) option, instead of
  being hardcoded to “{configdirectory}/zoneinfo”.  If you are using
  this module, you MUST now set this option explicitly.  Calendaring
  services will use the same timezone definitions.


Security fixes
==============

* Contains fix for CVE-2017-14230

* Contains fix for CVE-2019-18928

* Contains fix for CVE-2019-19783


Significant bugfixes
====================

* Contains fix for Issue #2839
