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# Cyrus IMAP 2.0.x Release Notes

Changes to the Cyrus IMAP Server since 2.0.16

- migrated to SASLv2 (Rob Siemborski)
- altnamespace: it is now possible to display user mailboxes as siblings to the INBOX at the top-level (Ken Murchison)
- unixhierarchysep: it is now possible possible to use slash as the hierarchy seperator, instead of a period. (Ken Murchison, inspired by David Fuchs, dfuchs@uniserve.com)
- SSL/TLS session caching (Ken Murchison)
- support for IMAP CHILDREN & LISTEXT extensions (Ken Murchison, work in progress)
- check recipient quota & ACL at time of RCPT TO: in lmtpd (Ken Murchison)
- support for LMTP STARTTLS & SIZE extensions (Ken Murchison)
- unified deliver.db, using cyrusdb interface, hopefully improving concurrency and performance (Ken Murchison)
- fixed STORE FLAGS () bug (Ken Murchison)
- fixed SEARCH SUBJECT vs. SEARCH HEADER SUBJECT bug (Ken Murchison)
- users without an INBOX can have subscriptions (Ken Murchison; noticing a trend here?)
- added cyrusdb_db3_nosync backend, used for duplicatedb and session cache, to postpone non-critical writes. (Ken Murchison)
- support for STARTTLS and AUTH=ANONYMOUS for timsieved (Ken Murchison)
- do setgid and initgroups in master (as urged by several people)
- added more config info to IMAP ID (in a vain attempt to improve debugging)
- configure now checks for DB3.3
- SQUAT (Rob O’Callahan, roc@cs.cmu.edu)
- change SEARCH HEADER x to SEARCH x utilizing internal cache where possible (Rob O’Callahan, roc@cs.cmu.edu)
- an improved directory hashing option (Gary Mills, mills@cc.UManitoba.CA)
- use of EGD for SSL/TLS (Amos Gouaux, amos@utdallas.edu)
- separate certs/keys for services (Henning P. Schmiedehausen, hps@intermeta.de)
- ability to force ipurge to traverse personal folders (Carsten Hoeger, choeger@suse.de)
- fixed zero quota bugs in cyradm (Leena Heino, liinu@uta.fi)
- ignore trailing whitespace in imapd.conf
- Received: header (with TLS and AUTH info)
- added ‘-i’ switch to sendmail command line for SIEVE reject, redirect and vacation
- small fixes to notify_unix
- added “duplicatesuppression” switch to imapd.conf for enabling/disabling duplicate delivery suppression (Birger Toedtmann, birger@takatukaland.de)

Changes to the Cyrus IMAP Server since 2.0.15

- fixed a longstanding bug in quota that would affect people with unusual top-level hierarchy, fix by John Darrow, John.P.Darrow@wheaton.edu.
- some important fixes to db3 interface code, by Walter Wong wcw@cmu.edu, prompted by complaints from Scott Adkins adkinss@ohio.edu.
- fixed some memory leaks in imclient and in the Perl IMAP module, prompted by Toni Andjelkovic toni@soth.at.
- fixed a longstanding authentication error in the Perl IMAP module, should remove pesky extra Password: prompt.
- fixed some allocation bugs in the managesieve perl module.

Changes to the Cyrus IMAP Server since 2.0.14

- fixed memory management bugs in imapd, lmtpd that were being hit due to the connection reuse code and causing subtle and annoying problems.
- we now clean up better when deleting a user
- fixed an endian bug in ipurge
- pop3d now can also reuse processes.
- fix a bug in imclient that would strike when cyradm specifies a mechanism on the command-line. (SASL mechanism names aren’t case sensitive.)
- fix some bugs in handling SIGHUP in master
- fix a couple of goofs in Admin.pm

Changes to the Cyrus IMAP Server since 2.0.13

- fixed a silly bug with reusing SSL connections
- lmtpd can now service multiple clients in sequence, hopefully improving performance
- changed how Berkeley db databases are opened, hopefully lessening the chance of deadlock and improving performance
- fixed a couple of memory leaks
- lessened the chance of a race condition during index_check()

Changes to the Cyrus IMAP Server since 2.0.12

- refactored code so less duplication
- added alternate config file for partial virtual domain support
- pop3d can now disable USER/PASS commands.
- STARTTLS now accepts a SSLv23 hello but doesn’t allow SSLv23 to be negotiated.
- imtest no longer buffers to aid use as an automated layer.
- master now supports maximum number of service processes via the “maxchild” modifier.
- fixed a bug in the Sieve string lexer.
- one imapd process can now service multiple clients in sequence, eliminating a large number of forks.

Changes to the Cyrus IMAP Server since 2.0.11

- portability fixes involving setrlimit()
- fixed compiler warnings
- the STARTTLS command will only accept TLSv1 now, not SSLv2/v3. The imaps port is unaffected by this change.
- timsieved no longer returns garbage strings.

Changes to the Cyrus IMAP Server since 2.0.9

- some small memory savings
- the “fud” daemon once again works correctly
- the IDLE extension now uses signals correctly
- problems with libwrap have been resolved
- imapd and pop3d now log connections protected via TLS.
- efficiency improvements when searching for a particular message-id
- fixed an envelope-parsing bug affecting SORT and THREAD
- made RENAME keep the same mailbox uniqueid, preserving seen state across renames
- STOREing flags to multiple messages in one command is now more efficient
- RENAME now preserves the ACL
- LIST is now as efficient as Cyrus v1.6, modulo Berkeley DB issues.
- Sieve zephyr notifications are now correct.
- crash in reconstruct now fixed.
- man pages added for cyrus.conf, master, lmtpd, idled, ctl_mboxlist, and ctl_deliver.
- master can now listen on specific interfaces
- master can now reread /etc/cyrus.conf on SIGHUP.
- timsieved now uses symlinks instead of hard links.

Changes to the Cyrus IMAP Server since 2.0.8

- remembered to update this file
- bug in Cyrus::IMAP perl module affecting cyradm’s setquota fixed
- portability fix with socklen_t

Changes to the Cyrus IMAP Server since 2.0.7

- preliminary implementation of the IDLE extension (Ken Murchison, ken@oceana.com).
- THREAD=REFERENCES now part of the normal build.
- tweaks to the installation documentation and suggested Sendmail configuration
- portability fixes and other small bugfixes
- added “-a” flag to lmtpd
- master process can now export statistics about running processes via UCD SNMP AgentX
- many fixes to Cyrus Murder-related code
- fixes to perl code, especially the Sieve interface. added an IMSP interface to the perl code, but it still needs work.

Changes to the Cyrus IMAP Server since 2.0.6

- some number of random static variables eliminated, to save on memory footprint
- recursive RENAME was a little to eager; fixed. RENAME will also give the client a hint that a sub-RENAME failed. (mostly probably useful for cyradm, but cyradm doesn’t take advantage of it yet.)
- THREAD=X-JWZ has turned into THREAD=REFERENCES (Ken Murchison)
- DELETE wasn’t failing cleanly in database code; fixed.
- off-by-one bug in seen_db fixed.
- starting/committing/aborting transactions now logged more correctly in cyrsudb_db3
- master will now accept port numbers instead of just service names in cyrus.conf. also logs even more verbosely (see bug #115.)
- libwrap_init() is now inside the loop, since i don’t quite understand the semantics of libwrap calls.
- setquota in cyradm now behaves more sanely (and gives correct usage message).
- bugfixes to the managesieve client perl api. (still needs work.)
- small fixes in timsieved.
- added a “make dist” target so i won’t dread releases as much.

Changes to the Cyrus IMAP Server since 2.0.5

- APPEND now honors the Seen flag.
- mailboxes file can once again be a flat text file. (compile-time choice)
- subscriptions file can be flat text or berkeley db. likewise for seen state.
- unfortunately, the format of the mailboxes file has changed.
- implementation of “JWZ” threading, a first pass on the forthcoming THREAD=REFERENCES.
- bugfixes in libacap.
- bugfixes in other Murder related functionality.
- removal of dead code.
- will now look in CYRUS_PREFIX/etc/imapd.conf if there’s no /etc/imapd.conf.
- more paranoid implementation of ID.
- more descriptive lmtp errors.
- finished implementation of LMTP 8BITMIME.
- fixed minor bugs in pop3d.
- small test suite for cyrusdb backends added in lib/test/.
- added -DPERL_POLLUTE to the perl compilation to deal with Perl 5.6.
- small additions to the Sieve library.
- As usual, owe lots of thanks to Ken Murchison for his hard work and awesome implementations.

Changes to the Cyrus IMAP Server SINCE 2.0.4

- Now should work with Berkeley DB 3.1, but does not auto-upgrade 3.0 databases (and, in fact, I haven’t written any upgrade software yet).
- SORT and THREAD should now function correctly.
- Some configure fixes.
- Some fixes for possible race conditions in initializing services and database structures.
- Some non-gcc compile fixes with structure initialization.
- Some non gcc compile fixes with structure initialization.

Changes to the Cyrus IMAP Server SINCE 2.0.3

- fixed mbpath and ipurge. Thanks to Alain Turbide for the bug report.
- configure: removed mmap_private.c; it was buggy, and not worth supporting.
- configure: improvements in detecting libwrap, typos fixed in detecting libsasl.
- Merged the acapsieve library into libacap.
- improvements to the ACAP API.
- invariant checks added to the skiplist code.
- bugfix in TCL cyradm.
- acapmbox.c: bugfixes in handling acap connections.
- fix the size given for a unix socket address (changes throughout the code), patch thanks to Vladimir Kravchenko, jimson@null.ru.
- rewrote deliver to use the generic LMTP API in lmtpengine.c. Likewise, implemented the client-side API in lmtpengine.c. (Still need to implement AUTH.)
- added SORT and THREAD support (Ken Murchison, ken@oceana.com.)
- In checking an APPEND command, we were rejecting valid system flags and accepting invalid ones.
- minor bug fixes to proxyd.
- large amount of debugging code added to target-acap.
- build fixes to Perl programs.
- allow plaintext authentication to timsieved.

Changes to the Cyrus IMAP Server in 2.0

- The mailboxes file is now a transaction-protected Berkeley database.
- The core delivery process has been moved to lmtpd. deliver is now a simple wrapper to create an LMTP transaction.
- master process, responsible for spawning services (imapd, lmtpd, etc.) and for routine housekeeping. Optionally, it can use libwrap to allow or deny connections.
- ACAP (Application Configuration Access Protocol) support for Cyrus Murder: IMAP Aggregator.
- Sieve enhancements: regular expressions, notifications, automatically setting IMAP flags.
- SNMP (Simple Network Management Protocol) support for monitoring usage (e.g. number of users logged in) as well as for instrumenting protocol usage (e.g. number of times CREATE has been called).
- Perl version of cyradm contributed by Brandon Allbery (allbery@ece.cmu.edu). Eventually we expect to transition to the Perl version away from the TCL version.
- Bugfix in modified UTF-7 processing (for mailbox names). Bugfix in index_searchcacheheader().
- Implemented the extension MULTIAPPEND.
- RENAME is now hierarchical.
- The right that controls whether a mailbox may be deleted is now “c”. (It used to be “d”.)
- An additional backend for seen state has been created, seen_db. It stores seen state in a per-user database.