- Dovecot-news - dovecot.org

v2.2.16 release candidate released
by Timo Sirainen 06 Mar '15

06 Mar '15

http://dovecot.org/releases/2.2/rc/dovecot-2.2.16.rc1.tar.gz http://dovecot.org/releases/2.2/rc/dovecot-2.2.16.rc1.tar.gz.sig Looks like it's been a long time since v2.2.15. There have been a ton of changes since it was released though, so here's a release candidate first to find out if somebody can find any bugs before the final v2.2.16. Unfortunately I haven't had time/energy to read Dovecot mailing list for a while now. I'm hoping this will change, but I don't really expect it to happen anytime soon. On the positive side for Dovecot, it's now becoming used in more and more multi-million user installations, which brings all kinds of nice new improvements. The largest changes since v2.2.15: * dbox: Resyncing (e.g. doveadm force-resync) no longer deletes dovecot.index.cache file. The cache file was rarely the problem so this just caused unnecessary slowness. * Mailbox name limits changed during mailbox creation: Each part of a hierarchical name (e.g. "x" or "y" in "x/y") can now be up to 255 chars long (instead of 200). This also reduces the max number of hierarchical levels to 16 (instead of 20) to keep the maximum name length 4096 (a common PATH_MAX limit). The 255 char limit is hopefully large enough for migrations from all existing systems. It's also the limit on many filesystems. + director: Added director_consistent_hashing setting to enable consistent hashing (instead of the mostly-random MD5 hashing). This causes fewer user moves between backends when backend counts are changed, which may improve performance (mainly due to caching). + director: Added support for "tags", which allows one director ring to serve multiple backend clusters with different sets of users. + LMTP server: Added lmtp_user_concurrency_limit setting to limit how many LMTP deliveries can be done concurrently for a single user. + LMTP server: Added support for STARTTLS command. + If logging data is generated faster than it can be written, log a warning about it and show information about it in log process's process title in ps output. Also don't allow a single service to flood too long at the cost of delaying other services' logging. + stats: Added support for getting global statistics. + stats: Use the same session IDs as the rest of Dovecot. + stats: Plugins can now create their own statistics fields + doveadm server: Non-mail related commands can now also be used via doveadm server (TCP socket). + doveadm proxying: passdb lookup can now override doveadm_port and change the username. + doveadm: Search query supports now "oldestonly" parameter to stop immediately on the first non-match. This can be used to optimize: doveadm expunge mailbox Trash savedbefore 30d oldestonly + doveadm: Added "save" command to directly save mails to specified mailbox (bypassing Sieve). + doveadm fetch: Added body.snippet field, which returns the first 100 chars of a message without whitespace or HTML tags. The result is stored into dovecot.index.cache, so it can be fetched efficiently. + dsync: Added -t <timestamp> parameter to sync only mails newer than the given received-timestamp. + dsync: Added -F [-]<flag> parameter to sync only mails with[out] the given flag/keyword. + dsync: Added -a <mailbox> parameter to specify the virtual mailbox containing user's all mails. If this mailbox is already found to contain the wanted mail (by its GUID), the message is copied from there instead of being re-saved. (This isn't efficient enough yet for incremental replication.) + dsync: -m parameter can now specify \Special-use names for mailboxes. + imapc: Added imapc_features=gmail-migration to help migrations from GMail. See http://wiki2.dovecot.org/Migration/Gmail + imapc: Added imapc_features=search to support IMAP SEARCH command. (Currently requires ESEARCH support from remote server.) + expire plugin: Added expire_cache=yes setting to cache most of the database lookups in dovecot index files. + quota: If overquota-flag in userdb doesn't match the current quota usage, execute a configured script. + redis dict: Added support for expiring keys (:expire_secs=n) and specifying the database number (:db=n) - auth: Don't crash if master user login is attempted without any configured master=yes passdbs - Parsing UTF-8 text for mails could have caused broken results sometimes if buffering was split in the middle of a UTF-8 character. This affected at least searching messages. - String sanitization for some logged output wasn't done properly: UTF-8 text could have been truncated wrongly or the truncation may not have happened at all. - fts-lucene: Lookups from virtual mailbox consisting of over 32 physical mailboxes could have caused crashes.

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Released Pigeonhole v0.4.6 for Dovecot v2.2.15.
by Stephan Bosch 02 Nov '14

02 Nov '14

Hello Dovecot users, Version 0.4.5 introduced one new 'feature', but it caused build problems. This release fixes that. If you've successfully installed 0.4.5, you do not need to upgrade. Changelog v0.4.6: - After make distclean, the distributed tarball would fail to recompile. This causes problems for some distribution builds. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.6.tar… http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.6.tar… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this new release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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Released Pigeonhole v0.4.5 for Dovecot v2.2.15.
by Stephan Bosch 31 Oct '14

31 Oct '14

Hello Dovecot users, Unfortunately, Pigeonhole v0.4.4 had a rather big issue with error handling and the execution of the implicit keep. This problem presented itself for example when users exceeded their quota. This did not result in the proper rejection message. This is why I quickly release a new version. Changelog v0.4.5: + Added a Pigeonhole version banner to doveconf output. This way, future bug reports will also include Pigeonhole version information. - Fixed handling of implicit keep. Last version erroneously reported that implicit keep succeeded after an earlier failure, while it in fact had failed. Particularly occurred for mailbox quota errors. - Fixed segfault occurring on SunOS systems when there is no active script. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.5.tar… http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.5.tar… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this new release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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Released Pigeonhole v0.4.4 for Dovecot v2.2.15.
by Stephan Bosch 28 Oct '14

28 Oct '14

Hello Dovecot users, It's been about 5 months since the last Pigeonhole release, so it is high time for a new one. However, the main reason to make a release now is the fact that Dovecot v2.2.15 has one change that causes problems with the previous release of Pigeonhole. Unlike recent earlier releases, this release has a few big new features. Most notably, I implemented a generic Sieve script storage framework. This means that it is now relatively easy to implement a storage driver to retrieve Sieve scripts from a location other than the file system. An important effect of this new implementation is that these alternative storage locations can also be used with sieve_before/sieve_after. Also, storing Sieve scripts there using ManageSieve is also possible, provided that the driver provides an implementation. I used the new framework to implement an LDAP storage driver. However, it is read-only, which means that it doesn't currently provide ManageSieve support. Several bugs were fixed. The most nasty ones were related to the doveadm-sieve plugin (which is one of the reasons why this release took so long). The new script storage driver framework entailed large changes in this plugin, so many of these problems were addressed implicitly. Hopefully, all problems are solved now. Changelog v0.4.4: * Added support for Japanese mail addresses with dots at non-standard places in localpart. * Changed handling of ENOSPACE into a normal temporary failure and added handling of ENOQUOTA as a user error. * Restructured result execution, so that all actions which involve mail storage are always committed before all others. + Implemented support for generic Sieve storages. Using alternative storages now also possible for sieve_before/sieve_after. + Implemented storage driver for retrieving Sieve scripts from LDAP. This currently cannot be used with ManageSieve. + Implemented sieve_redirect_envelope_from setting, which allows configuring the envelope sender of redirected messages. - Fixed handling of mail storage errors occurring while evaluating the input message. - managesieve-login: - Removed bogus ALERT response code returned for AUTHENTICATE command. - Fixed handling of invalid initial response argument to AUTHENTICATE command. - Fixed handling of stream errors in lexical scanner. - Fixed handling of SMTP errors. Permanent and temporary errors were mixed up. - Fixed several problems reported by CLang 3.4. - duplicate extension: Fixed erroneous compile error about conflicting tags when `:handle' argument was used last. - relational extension: Fixed error handling of `:value' match. - editheader extension: Fixed header unfolding and header iteration. - mailbox extension: Fixed the `:create' tag, which erroneously subscribed an existing folder. - extprograms plugin: Fixed handling of error codes. - doveadm-sieve plugin: Fixed several bugs. Synchronization of symbolic link in the file storage should now also work properly. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.4.tar… http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.4.tar… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this new release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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v2.2.15 released
by Timo Sirainen 25 Oct '14

25 Oct '14

http://dovecot.org/releases/2.2/dovecot-2.2.15.tar.gz http://dovecot.org/releases/2.2/dovecot-2.2.15.tar.gz.sig Some small fixes and changes to v2.2.14. This release is mainly in the hope that it could still make it into the next Debian stable instead of v2.2.14 - mainly because of a couple of new assert crashes that started happening in v2.2.14 and should be fixed now. * Plugins can now print a banner comment in doveconf output (typically the plugin version) * Replication plugin now triggers low (instead of high) priority for mail copying operations. * IMAP/POP3/ManageSieve proxy: If destination server can't be connected to, retry connecting once per second up to the value of proxy_timeout. This allows quick restarts/upgrades on the backend server without returning login failures. * Internal passdb lookups (e.g. done by lmtp/doveadm proxy) wasn't returning failure in some situations where it should have (e.g. allow_nets mismatch) * LMTP uses mail_log_prefix now for logging mail deliveries instead of a hardcoded prefix. The non-delivery log prefix is still hardcoded though. + passdb allow_nets=local matches lookups that don't contain an IP address (internally done by Dovecot services) + Various debug logging and error logging improvements - Various race condition fixes to LAYOUT=index - v2.2.14 virtual plugin crashed in some situations

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v2.2.14 released
by Timo Sirainen 14 Oct '14

14 Oct '14

http://dovecot.org/releases/2.2/dovecot-2.2.14.tar.gz http://dovecot.org/releases/2.2/dovecot-2.2.14.tar.gz.sig Looks like it took a bit longer to make this release after RC1 than I thought. I'm now in San Jose area for a few months and still jumping between apartments and trying to adjust to the new timezone. Some of the more important fixes since RC1: - Fixed several race conditions with dovecot.index.cache handling that may have caused unnecessary "cache is corrupted" errors. - auth: If auth client listed userdb and disconnected before finishing, the auth worker process got stuck (and eventually all workers could get used up and requests would start failing). Some of the larger changes since v2.2.13: * lmtp: Delivered-To: header no longer contains <> around the email address. Other MDAs don't have it either. * "Out of disk space" errors are now treated as temporary errors (not the same as "Out of disk quota"). * replication plugin: Use replication only for users who have a non-empty mail_replica setting. + lmtp proxy: Log a line about each mail delivery. + Added login_source_ips setting. This can be used to set the source IP address round-robin from a pool of IPs (in case you run out of TCP ports). + Rawlog settings can use tcp:<host>:<port> as the path. + virtual plugin: Don't keep more than virtual_max_open_mailboxes (default 64) number of backend mailboxes open. + SSL/TLS compression can be disabled with ssl_options=no_compression + acl: Global ACL file now supports "quotes" around patterns. + Added last-login plugin to set user's last-login timestamp on login. + LDAP auth: Allow passdb credentials lookup also with auth_bind=yes - IMAP: MODSEQ was sent in FETCH reply even if CONDSTORE/QRESYNC wasn't enabled. This broke at least old Outlooks. - passdb static treated missing password field the same as an empty password field. - mdbox: Fixed potential infinite looping when scanning a broken mdbox file. - imap-login, pop3-login: Fixed potential crashes when client disconnected unexpectedly. - imap proxy: The connection was hanging in some usage patterns. This mainly affected older Outlooks. - lmtp proxy: The proxy sometimes delivered empty mails in error situations or potentially delivered truncated mails. - fts-lucene: If whitespace_chars was set, we may have ended up indexing some garbage words, growing the index size unnecessarily. - -c and -i parameters for dovecot/doveadm commands were ignored if the config socket was readable. - quota: Quota recalculation didn't include INBOX in some setups. - Mail headers were sometimes added to dovecot.index.cache in wrong order. The main problem this caused was with dsync+imapc incremental syncing when the second sync thought the local mailbox had changed. - doveadm backup didn't notice if emails were missing from the middle of the destination mailbox. Now it deletes and resyncs the mailbox.

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v2.2.14.rc1 released
by Timo Sirainen 03 Oct '14

03 Oct '14

http://dovecot.org/releases/2.2/rc/dovecot-2.2.14.rc1.tar.gz http://dovecot.org/releases/2.2/rc/dovecot-2.2.14.rc1.tar.gz.sig I've wanted to do this release for months now, but I keep being too busy all the time. This release fixes several important bugs and a lot of smaller ones. Because there are such a large number of changes I thought I'd make this release candidate release first and the final v2.2.14 early next week. I usually read through the Dovecot mailing list mails before making a new release to see if there are some (important) bugs reported, but I've been way too busy recently to read through everything. I still have over 250 unread mails and I don't think I'll have time to read them anytime soon. On the positive side the Dovecot company is now hiring more people. Especially having more Dovecot coders would reduce my work load and maybe allow me to go back to reading the Dovecot mailing list daily.. See: http://www.dovecot.fi/dovecot-is-hiring-software-engineer-helsinki/ (you can do this work anywhere - no need to live in Finland) http://www.dovecot.fi/dovecot-is-hiring-operations-and-support-engineer-hel… (this probably requires living in Finland) http://www.dovecot.fi/dovecot-is-hiring-technical-pre-sales-engineer-helsin… (probably no need to live in Finland) Here are some of the larger changes since v2.2.13: * lmtp: Delivered-To: header no longer contains <> around the email address. Other MDAs don't have it either. * "Out of disk space" errors are now treated as temporary errors (not the same as "Out of disk quota"). * replication plugin: Use replication only for users who have a non-empty mail_replica setting. + lmtp proxy: Log a line about each mail delivery. + Added login_source_ips setting. This can be used to set the source IP address round-robin from a pool of IPs (in case you run out of TCP ports). + Rawlog settings can use tcp:<host>:<port> as the path. + virtual plugin: Don't keep more than virtual_max_open_mailboxes (default 64) number of backend mailboxes open. + SSL/TLS compression can be disabled with ssl_options=no_compression + acl: Global ACL file now supports "quotes" around patterns. + Added last-login plugin to set user's last-login timestamp on login. + LDAP auth: Allow passdb credentials lookup also with auth_bind=yes - IMAP: MODSEQ was sent in FETCH reply even if CONDSTORE/QRESYNC wasn't enabled. This broke at least old Outlooks. - passdb static treated missing password field the same as an empty password field. - mdbox: Fixed potential infinite looping when scanning a broken mdbox file. - imap-login, pop3-login: Fixed potential crashes when client disconnected unexpectedly. - imap proxy: The connection was hanging in some usage patterns. This mainly affected older Outlooks. - lmtp proxy: The proxy sometimes delivered empty mails in error situations or potentially delivered truncated mails. - fts-lucene: If whitespace_chars was set, we may have ended up indexing some garbage words, growing the index size unnecessarily. - -c and -i parameters for dovecot/doveadm commands were ignored if the config socket was readable. - quota: Quota recalculation didn't include INBOX in some setups. - Mail headers were sometimes added to dovecot.index.cache in wrong order. The main problem this caused was with dsync+imapc incremental syncing when the second sync thought the local mailbox had changed. - doveadm backup didn't notice if emails were missing from the middle of the destination mailbox. Now it deletes and resyncs the mailbox.

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Released Pigeonhole v0.4.3 for Dovecot v2.2.13.
by Stephan Bosch 12 May '14

12 May '14

Hello Dovecot users, Now that Dovecot v2.2.13 is released, I can release a new Pigeonhole. Due to changes in Dovecot, this Pigeonhole release will not compile cleanly against older Dovecot releases. This release is mainly about bugfixes. One notable addition is that I have updated the "vnd.dovecot.duplicate" extension to the new IETF draft "duplicate" extension. Changelog v0.4.3: * Editheader extension: Made control characters allowed for editheader, except NUL. Before, this would cause a runtime error. + Upgraded Dovecot-specific Sieve "vnd.dovecot.duplicate" extension to match the new draft "duplicate" extension. - Fixed sieve_result_global_log_error to log only as i_info in administrator log (syslog) if executed from multiscript context. - Sieve redirect extension: Adjusted loop detection to show leniency to resent messages. - Sieve include extension: Fixed problem with handling of duplicate includes with different parameters :once or :optional. - Sieve spamtest/virustest extensions: Tests were erroneously performed against the original message. When used together with extprograms filter to add the spam headers, the changes were not being used by the spamtest and virustest extensions. - Deprecated Sieve notify extension: Fixed segfault problems in message string substitution. - ManageSieve: Fixed active link verification to handle redundant path slashes correctly. - Sieve vacation extension: - Fixed interaction of sieve_vacation_dont_check_recipient with sieve_vacation_send_from_recipient setting. - Fixed log message for discarded response. - Sieve extprograms plugin: - Forgot to disable the alarm() timeouts set for script execution. - Fixed fd leak and handling of output shutdown. - Fixed 'Bad filedescriptor' error occurring when disconnecting script client. - Made sure that programs are never forked with root privileges. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.3.tar… http://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.3.tar… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this new release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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v2.2.13 released
by Timo Sirainen 11 May '14

11 May '14

http://dovecot.org/releases/2.2/dovecot-2.2.13.tar.gz http://dovecot.org/releases/2.2/dovecot-2.2.13.tar.gz.sig A few minor changes since v2.2.13.rc1, mainly making the Pigeonhole tests pass. * Fixed a DoS attack against imap/pop3-login processes. If SSL/TLS handshake was started but wasn't finished, the login process attempted to eventually forcibly disconnect the client, but failed to do it correctly. This could have left the connections hanging arond for a long time. (Affected Dovecot v1.1+) + mdbox: Added mdbox_purge_preserve_alt setting to keep the file within alt storage during purge. (Should become enforced in v2.3.0?) + fts: Added support for parsing attachments via Apache Tika. Enable with: plugin { fts_tika = http://tikahost:9998/tika/ } + virtual plugin: Delay opening backend mailboxes until it's necessary. This requires mailbox_list_index=yes to work. (Currently IMAP IDLE command still causes all backend mailboxes to be opened.) + mail_never_cache_fields=* means now to disable all caching. This may be a useful optimization as doveadm/dsync parameter for some admin tasks which shouldn't really update the cache file. + IMAP: Return SPECIAL-USE flags always for LSUB command. - pop3 server was still crashing in v2.2.12 with some settings - maildir: Various fixes and improvements to handling compressed mails, especially when they have broken/missing S=sizes in filenames. - fts-lucene, fts-solr: Fixed crash on search when the index contained duplicate entries. - Many fixes and performance improvements to dsync and replication - director was somewhat broken when there were exactly two directors in the ring. It caused errors about "weak users" getting stuck. - mail_attachment_dir: Attachments with the last base64-encoded line longer than the rest wasn't handled correctly. - IMAP: SEARCH/SORT PARTIAL was handled completely wrong in v2.2.11+ - acl: Global ACL file handling was broken when multiple entries matched the mailbox name. (Only the first entry was used.)

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v2.2.13.rc1 released
by Timo Sirainen 08 May '14

08 May '14

http://dovecot.org/releases/2.2/rc/dovecot-2.2.13.rc1.tar.gz http://dovecot.org/releases/2.2/rc/dovecot-2.2.13.rc1.tar.gz.sig There have been a ton of smaller and some larger changes since v2.2.12, so I thought I'd first make a RC release and the final v2.2.13 tomorrow. Please try it out! BTW. I've read most of the mails again in Dovecot mailing list, but there are still a few reported bugs I decided to leave until later. Anyway feel free to re-send any bug reports for things that haven't been fixed in v2.2.13 yet. * Fixed a DoS attack against imap/pop3-login processes. If SSL/TLS handshake was started but wasn't finished, the login process attempted to eventually forcibly disconnect the client, but failed to do it correctly. This could have left the connections hanging arond for a long time. (Affected Dovecot v1.1+) + mdbox: Added mdbox_purge_preserve_alt setting to keep the file within alt storage during purge. (Should become enforced in v2.3.0?) + fts: Added support for parsing attachments via Apache Tika. Enable with: plugin { fts_tika = http://tikahost:9998/tika/ } + virtual plugin: Delay opening backend mailboxes until it's necessary. This requires mailbox_list_index=yes to work. (Currently IMAP IDLE command still causes all backend mailboxes to be opened.) + mail_never_cache_fields=* means now to disable all caching. This may be a useful optimization as doveadm/dsync parameter for some admin tasks which shouldn't really update the cache file. + IMAP: Return SPECIAL-USE flags always for LSUB command. - pop3 server was still crashing in v2.2.12 with some settings - maildir: Various fixes and improvements to handling compressed mails, especially when they have broken/missing S=sizes in filenames. - fts-lucene, fts-solr: Fixed crash on search when the index contained duplicate entries. - Many fixes and performance improvements to dsync and replication - director was somewhat broken when there were exactly two directors in the ring. It caused errors about "weak users" getting stuck. - mail_attachment_dir: Attachments with the last base64-encoded line longer than the rest wasn't handled correctly. - IMAP: SEARCH/SORT PARTIAL was handled completely wrong in v2.2.11+ - acl: Global ACL file handling was broken when multiple entries matched the mailbox name. (Only the first entry was used.)

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