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 separator, 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.