Cyrus IMAP 3.0.0 rc4 Release Notes¶
Warning
Cyrus IMAP 3.0 is under active development, and subject to change.
Do NOT use this version unless you’re a developer of sorts.
Download via HTTP:
Download via FTP:
Major changes since the 2.5.x series¶
- The source repository has moved to GitHub, Bugzilla and Phabricator have been deprecated. Their issue lists are being imported into GitHub. 
- Support added for FastMail-style conversations (threaded messages). (See the - conversationsoptions in imapd.conf)
- Optional Xapian integration for faster and shinier search. Note that this requires custom patches to Xapian, in this release. (See the - search_engineoption in imapd.conf, and- doc/README.xapianin the source distribution.)) Compiling Xapian support requires gcc 4.9 or later.
- Archive support has arrived! Requires addition of an archive partition. (See - archive_*options in imapd.conf)
- Basic JMAP support. (See - httpmodulesin imapd.conf)
- ClamAV integration for AntiVirus support is now working again. 
- Dropped support for Berkeley DB. 
- The handling of configure options has changed, dropping support for - --with-cyrus-prefixand- --with-service-pathin favour of the more conventional- --prefix,- --bindir,- --sbindir, and- --libexecdir.
- Binaries executed by the master(8) service process are now installed to - --libexecdir. Other binaries are installed to- --bindirand/or- --sbindir.- The - make installbinsymlinkstarget can be used to set up symlinks to everything in- --bindir, if you need that in your environment.
- Added support for replicating mailboxes/users to a particular partition. - sync_clientnow accepts a- -poption.
- The - defaultdomainsetting in imapd.conf now defaults to “internal” (was: NULL)
- Added experimental backup service. See Cyrus Backups 
- Support for Apple’s Push service (XAPPLEPUSH). See Cyrus Eventsource 
- Sieve now supports special use folders. See Cyrus Sieve 
- Sieve now supports the following extensions: 
- Sieve bytecode is now automatically recompiled when it is detected to be missing or out of date 
- New numeric header available for sorting: X-Spam-Score 
- Added IMIP notification support to notifyd(8). See - imipnotifierin imapd.conf
- Optimised CRC32 implementation 
- Added support for reverse ACLs, enabling faster LIST response. See - reverseaclsin imapd.conf
- Added cross-domain sharing support. See - crossdomainsand- crossdomains_onlyotherin imapd.conf
- Added experimental object storage for mail data, with preliminary support for OpenIO and Caringo backends. See configure.ac - --enable-objectstore, and the- object_storage_*,- openio_*and- caringo_*options in imapd.conf.
- Configurable POP3 UIDL format for compatibility with other mail servers. Supports Courier Mail Server and Dovecot formats, in addition to Cyrus formats. See - uidl_formatin imapd.conf
- Under - delete_mode: delayed, only the 20 most recently deleted mailboxes are kept for any given name.
- Documentation cleanup: we are moving toward having a single restructured text source for man pages and html/text documentation, which are pre-generated for inclusion in release tarballs. If you wish to rebuild these, or are building from a git clone in which they are not pregenerated, you will need to install - sphinx-build, and the perl module- Pod::POM::View::Restructured. The top level Makefile now has- manand- doctargets for building these.
- Added support for OpenSSL 1.1.0. 
- Replication now supports incremental partial updates, so massive updates (such as mail imports) won’t stall replication for other users. See - sync_batchsizein imapd.conf
- The mailbox cache minor version has been incremented to store a GUID for each body part. 
Updates to default configuration¶
- unixhierarchysep(- /) is now- onby default (instead of netnews style- .)
- altnamespaceis now- onby default (was- off)
- virtdomainsis actually still- offby default. (Previously we stated it was now defaulting to- userid: this was an error.)
Significant bugfixes¶
- Lots of fixes to caldav and carddav. - Includes the addition of a new daemon (calalarmd) which periodically processes a global database containing the “next” alarm for each item, and sends the relevant mboxevents. (See configure.ac - --with-calalarmd)
- Replication reliability fixes. 
- Improved - LIST-EXTENDED: more imap tests now succeed.
- Extensive cleanup of mailbox name handling 
- masternow requests a sane maximum number of open file descriptors, and only complains if this isn’t allowed.
- Fixes to compiling on Solaris (thanks Jens Erat, Marty Lee) 
- Improved handling of mailbox renames during replication 
