v2.2.26 release candidate released

[Eric Broch]

Compiled on CentOS 6 and CentOS 7 successfully.


On 10/19/2016 3:01 PM, Timo Sirainen wrote:
> http://dovecot.org/releases/2.2/rc/dovecot-2.2.26.rc1.tar.gz
> http://dovecot.org/releases/2.2/rc/dovecot-2.2.26.rc1.tar.gz.sig
>
> There are quite a lot of changes since v2.2.25. Please try out this RC so we can get a good and stable v2.2.26 out.
>
> 	* master: Removed hardcoded 511 backlog limit for listen(). The kernel
> 	  should limit this as needed.
> 	* doveadm import: Source user is now initialized the same as target
> 	  user. Added -U parameter to override the source user.
> 	* Mailbox names are no longer limited to 16 hierarchy levels. We'll
> 	  check another way to make sure mailbox names can't grow larger than
> 	  4096 bytes.
>
> 	+ Added a concept of "alternative usernames" by returning user_* extra
> 	  field(s) in passdb. doveadm proxy list shows these alt usernames in
> 	  "doveadm proxy list" output. "doveadm director&proxy kick" adds
> 	  -f <passdb field> parameter. The alt usernames don't have to be
> 	  unique, so this allows creation of user groups and kicking them in
> 	  one command.
> 	+ auth: passdb/userdb dict allows now %variables in key settings.
> 	+ auth: If passdb returns noauthenticate=yes extra field, assume that
> 	  it only set extra fields and authentication wasn't actually performed.
> 	+ auth: passdb static now supports password={scheme} prefix.
> 	+ imapc: Added imapc_max_line_length to limit maximum memory usage.
> 	+ imap, pop3: Added rawlog_dir setting to store IMAP/POP3 traffic logs.
> 	  This replaces at least partially the rawlog plugin.
> 	+ dsync: Added dsync_features=empty-header-workaround setting. This
> 	  makes incremental dsyncs work better for servers that randomly return
> 	  empty headers for mails. When an empty header is seen for an existing
> 	  mail, dsync assumes that it matches the local mail.
> 	+ doveadm sync/backup: Added -I <max size> parameter to skip too
> 	  large mails.
> 	+ doveadm sync/backup: Fixed -t parameter and added -e for "end date".
> 	+ doveadm mailbox metadata: Added -s parameter to allow accessing
> 	  server metadata by using empty mailbox name.
>
> 	- master process's listener socket was leaked to all child processes.
> 	  This might have allowed untrusted processes to capture and prevent
> 	  "doveadm service stop" comands from working.
> 	- auth: userdb fields weren't passed to auth-workers, so %{userdb:*}
> 	  from previous userdbs didn't work there.
> 	- auth: Each userdb lookup from cache reset its TTL.
> 	- auth: Fixed auth_bind=yes + sasl_bind=yes to work together
> 	- auth: Blocking userdb lookups reset extra fields set by previous
> 	  userdbs.
> 	- auth: Cache keys didn't include %{passdb:*} and %{userdb:*}
> 	- auth-policy: Fixed crash due to using already-freed memory if policy
> 	  lookup takes longer than auth request exists.
> 	- lib-auth: Unescape passdb/userdb extra fields. Mainly affected
> 	  returning extra fields with LFs or TABs.
> 	- lmtp_user_concurrency_limit>0 setting was logging unnecessary
> 	  anvil errors.
> 	- lmtp_user_concurrency_limit is now checked before quota check with
> 	  lmtp_rcpt_check_quota=yes to avoid unnecessary quota work.
> 	- lmtp: %{userdb:*} variables didn't work in mail_log_prefix
> 	- autoexpunge settings for mailboxes with wildcards didn't work when
> 	  namespace prefix was non-empty.
> 	- Fixed writing >2GB to iostream-temp files (used by fs-compress,
> 	  fs-metawrap, doveadm-http)
> 	- director: Ignore duplicates in director_servers setting.
> 	- zlib, IMAP BINARY: Fixed internal caching when accessing multiple
> 	  newly created mails. They all had UID=0 and the next mail could have
> 	  wrongly used the previously cached mail.
> 	- doveadm stats reset wasn't reseting all the stats.
> 	- auth_stats=yes: Don't update num_logins, since it doubles them when
> 	  using with mail stats.
> 	- quota count: Fixed deadlocks when updating vsize header.
> 	- dict-quota: Fixed crashes happening due to memory corruption.
> 	- dict proxy: Fixed various timeout-related bugs.
> 	- doveadm proxying: Fixed -A and -u wildcard handling.
> 	- doveadm proxying: Fixed hangs and bugs related to printing.
> 	- imap: Fixed wrongly triggering assert-crash in
> 	  client_check_command_hangs.
> 	- imap proxy: Don't send ID command pipelined with nopipelining=yes
> 	- imap-hibernate: Don't execute quota_over_script or last_login after
> 	  un-hibernation.
> 	- imap-hibernate: Don't un-hibernate if client sends DONE+IDLE in one
> 	  IP packet.
> 	- imap-hibernate: Fixed various failures when un-hibernating.
> 	- fts: fts_autoindex=yes was broken in 2.2.25 unless
> 	  fts_autoindex_exclude settings existed.
> 	- fts-solr: Fixed searching multiple mailboxes (patch by x16a0)
> 	- doveadm fetch body.snippet wasn't working in 2.2.25. Also fixed a
> 	  crash with certain emails.
> 	- pop3-migration + dbox: Various fixes related to POP3 UIDL
> 	  optimization in 2.2.25.
> 	- pop3-migration: Fixed "truncated email header" workaround.