Log message:
Changes 2.2.28:
* director: "doveadm director move" to same host now refreshes user's
  timeout. This allows keeping user constantly in the same backend by
  just periodically moving the user there.
* When new mailbox is created, use initially INBOX's
  dovecot.index.cache caching decisions.
* Expunging mails writes GUID to dovecot.index.log now only if the
  GUID is quickly available from index/cache.
* pop3c: Increase timeout for PASS command to 5 minutes.
* Mail access errors are no longer ignored when searching or sorting.
  With IMAP the untagged SEARCH/SORT reply is still sent the same as
  before, but NO reply is returned instead of OK.

+ Make dovecot.list.index's filename configurable. This is needed when
  there are multiple namespaces pointing to the same mail root
  (e.g. lazy_expunge namespace for mdbox).
+ Add size.virtual to dovecot.index when folder vsizes are accessed
  (e.g. quota=count). This is mainly a workaround to avoid slow quota
  recalculation performance when message sizes get lost from
  dovecot.index.cache due to corruption or some other reason.
+ auth: Support OAUTHBEARER and XOAUTH2 mechanisms. Also support them
  in lib-dsasl for client side.
+ auth: Support filtering by SASL mechanism: passdb { mechanisms }
+ Shrink the mail processes' memory usage by not storing settings
  duplicated unnecessarily many times.
+ imap: Add imap_fetch_failure setting to control what happens when
  FETCH fails for some mails (see example-config).
+ imap: Include info about last command in disconnection log line.
+ imap: Created new SEARCH=X-MIMEPART extension. It's currently not
  advertised by default, since it's not fully implemented.
+ fts-solr: Add support for basic authentication.
+ Cassandra: Support automatically retrying failed queries if
  execution_retry_interval and execution_retry_times are set.
+ doveadm: Added "mailbox path" command.
+ mail_log plugin: If plugin { mail_log_cached_only=yes }, log the
  wanted fields only if it doesn't require opening the email.
+ mail_vsize_bg_after_count setting added (see example-config).
+ mail_sort_max_read_count setting added (see example-config).
+ pop3c: Added pop3c_features=no-pipelining setting to prevent using
  PIPELINING extension even though it's advertised.

- Index files: day_first_uid wasn't updated correctly since v2.2.26.
  This caused dovecot.index.cache to be non-optimal.
- imap: SEARCH/SORT may have assert-crashed in
  client_check_command_hangs
- imap: FETCH X-MAILBOX may have assert-crashed in virtual mailboxes.
- imap: Running time in tagged command reply was often wrongly 0.
- search: Using NOT n:* or NOT UID n:* wasn't handled correctly
- director: doveadm director kick was broken
- director: Fix crash when using director_flush_socket
- director: Fix some bugs when moving users between backends
- imapc: Various error handling fixes and improvements
- master: doveadm process status output had a lot of duplicates.
- autoexpunge: If mailbox's rename timestamp is newer than mail's
  save-timestamp, use it instead. This is useful when autoexpunging
  e.g. Trash/* and an entire mailbox is deleted by renaming it under
  Trash to prevent it from being autoexpunged too early.
- autoexpunge: Multiple processes may have been trying to expunge the
  same mails simultaneously. This was problematic especially with
  lazy_expunge plugin.
- auth: %{passdb:*} was empty in auth-worker processes
- auth-policy: hashed_password was always sent empty.
- dict-sql: Merge multiple UPDATEs to a single statement if possible.
- fts-solr: Escape {} chars when sending queries
- fts: fts_autoindex_exclude = \Special-use caused crashes
- doveadm-server: Fix leaks and other problems when process is reused
  for multiple requests (service_count != 1)
- sdbox: Fix assert-crash on mailbox create race
- lda/lmtp: deliver_log_format values weren't entirely correct if Sieve
  was used. especially %{storage_id} was broken.
- lmtp_user_concurrency_limit didn't work if userdb changed username

Log message:
Include sys/time.h for struct timeval.
Build fix for NetBSD-7.99.59.

Log message:
Changes 2.2.27:
* dovecot.list.index.log rotation sizes/times were changed so that
  the .log file stays smaller and .log.2 is deleted sooner.
+ Added mail_crypt plugin that allows encryption of stored emails.
  See http://wiki2.dovecot.org/Plugins/MailCrypt
+ stats: Global stats can be sent to Carbon server by setting
  stats_carbon_server=ip:port
+ imap/pop3 proxy: If passdb returns proxy_not_trusted, don't send
  ID/XCLIENT
+ Added generic hash modifier for %variables:
  %{<hash algorithm>;rounds=<n>,truncate=<bits>,salt=s>:field}
  Hash algorithm is any of the supported ones, e.g. md5, sha1, sha256.
  Also "pkcs5" is supported using SHA256. For example: %{sha256:user}
  or %{md5;truncate=32:user}.
+ Added support for SHA3-256 and SHA3-512 hashes.
+ config: Support DNS wildcards in local_name, e.g.
  local_name *.example.com { .. } matches anything.example.com, but
  not multiple.anything.example.com.
+ config: Support multiple names in local_name, e.g.
  local_name "1.example.com 2.example.com" { .. }
- Fixed crash in auth process when auth-policy was configured and
  authentication was aborted/failed without a username set.
- director: If two users had different tags but the same hash,
  the users may have been redirected to the wrong tag's hosts.
- Index files may have been thought incorrectly lost, causing
  "Missing middle file seq=.." to be logged and index rebuild.
  This happened more easily with IMAP hibernation enabled.
- Various fixes to restoring state correctly in un-hibernation.
- dovecot.index files were commonly 4 bytes per email too large. This
  is because 3 bytes per email were being wasted that could have been
  used for IMAP keywords.
- Various fixes to handle dovecot.list.index corruption better.
- lib-fts: Fixed assert-crash in address tokenizer with specific input.
- Fixed assert-crash in HTML to text parsing with specific input
  (e.g. for FTS indexing or snippet generation)
- doveadm sync -1: Fixed handling mailbox GUID conflicts.
- sdbox, mdbox: Perform full index rebuild if corruption is detected
  inside lib-index, which runs index fsck.
- quota: Don't skip quota checks when moving mails between different
  quota roots.
- search: Multiple sequence sets or UID sets in search parameters
  weren't handled correctly. They were incorrectly merged together.

Log message:
Bump BUILDLINK_ABI_DEPENDS since older dovecot2-pigeonhole dose not work
with 2.2.26.0.

Log message:
Add build problem on NetBSD 7.0_STABLE at least.

Log message:
Changes 2.2.26:
 * 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.
 + auth, login_log_format_elements: Added %{local_name} variable, which
   expands to TLS SNI hostname if given.
 + 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.
 + Added "doveadm service status" and "doveadm process \ 
status" commands.
 + director: Added director_flush_socket. See
   http://wiki2.dovecot.org/Director#Flush_socket
 + doveadm director flush: Users are now moved only max 100 at a time to
   avoid load spikes. --max-parallel parameter overrides this.
 + Added FILE_LOCK_SLOW_WARNING_MSECS environment, which logs a warning
   if any lock is waited on or kept for this many milliseconds.

 - 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.
 - login proxy: Fixed crash when outgoing SSL connections were hanging.
 - 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.
 - director: Many fixes related to connection handshaking, user moving
   and error handling.
 - director: Don't break with shutdown_clients=no
 - 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.

v2.2.26 had a couple of nasty bugs left in it, so here's a fixup release. The \ 
version number is also a little bit weird, but had to be done this way (although \ 
2.2.26.0.1 could have been another possibility).
 - Fixed some compiling issues.
 - auth: Fixed assert-crash when using NTLM or SKEY mechanisms and
   multiple passdbs.
 - auth: Fixed crash when exporting to auth-worker passdb extra fields
   that had empty values.
 - dsync: Fixed assert-crash in dsync_brain_sync_mailbox_deinit

Log message:
Enable generic SQL backend support. Fixes pkg/51536. PKGREVISION++

Log message:
Fix static array check in configure. Patch will be in next dovecot release,
so can be removed after that.

Log message:
Recursive PKGREVISION bump for gnutls shlib major bump.

Log message:
Split off dovecot2-{gssapi,ldap,mysql,pgsql,sqlite} as separate
packages, remove respective options.mk parts.