Initial

install/common/dovecot/conf.d/10-auth.conf

@@ -0,0 +1,5 @@
+disable_plaintext_auth = no
+auth_username_format = %Lu
+auth_verbose = yes
+auth_mechanisms = plain login
+!include auth-passwdfile.conf.ext

install/common/dovecot/conf.d/10-logging.conf

@@ -0,0 +1 @@
+log_path = /var/log/dovecot.log

install/common/dovecot/conf.d/10-mail.conf

@@ -0,0 +1,8 @@
+mail_privileged_group = mail
+mail_access_groups = mail
+mail_location = maildir:%h/mail/%d/%n
+pop3_uidl_format = %08Xu%08Xv
+
+mailbox_list_index = yes
+mailbox_idle_check_interval = 30 secs
+maildir_copy_with_hardlinks = yes

install/common/dovecot/conf.d/10-master.conf

@@ -0,0 +1,31 @@
+service imap-login {
+  inet_listener imap {
+  }
+  inet_listener imaps {
+  }
+}
+
+service pop3-login {
+  inet_listener pop3 {
+  }
+  inet_listener pop3s {
+  }
+}
+
+
+service imap {
+}
+
+service pop3 {
+}
+
+service auth {
+  extra_groups = mail
+
+  unix_listener auth-client {
+    group = mail
+    mode = 0660
+    user = dovecot
+  }
+  user = dovecot
+}

install/common/dovecot/conf.d/10-ssl.conf

@@ -0,0 +1,13 @@
+ssl = yes
+ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-SHA256
+ssl_min_protocol = TLSv1.2
+ssl_prefer_server_ciphers = yes
+
+ssl_cert = </usr/local/hestia/ssl/certificate.crt
+ssl_key = </usr/local/hestia/ssl/certificate.key
+
+# From and up to version 2.2
+#ssl_dh_parameters_length = 4096
+
+# From version 2.3
+ssl_dh = </etc/ssl/dhparam.pem

install/common/dovecot/conf.d/20-imap.conf

@@ -0,0 +1,59 @@
+##
+## IMAP specific settings
+##
+
+protocol imap {
+  # Maximum IMAP command line length. Some clients generate very long command
+  # lines with huge mailboxes, so you may need to raise this if you get
+  # "Too long argument" or "IMAP command line too large" errors often.
+  #imap_max_line_length = 64k
+
+  # Maximum number of IMAP connections allowed for a user from each IP address.
+  # NOTE: The username is compared case-sensitively.
+  #mail_max_userip_connections = 10
+
+  # Space separated list of plugins to load (default is global mail_plugins).
+  #mail_plugins = $mail_plugins
+  mail_plugins = quota imap_quota
+
+  # IMAP logout format string:
+  #  %i - total number of bytes read from client
+  #  %o - total number of bytes sent to client
+  #imap_logout_format = bytes=%i/%o
+
+  # Override the IMAP CAPABILITY response. If the value begins with '+',
+  # add the given capabilities on top of the defaults (e.g. +XFOO XBAR).
+  #imap_capability =
+
+  # How long to wait between "OK Still here" notifications when client is
+  # IDLEing.
+  #imap_idle_notify_interval = 2 mins
+
+  # ID field names and values to send to clients. Using * as the value makes
+  # Dovecot use the default value. The following fields have default values
+  # currently: name, version, os, os-version, support-url, support-email.
+  #imap_id_send =
+
+  # ID fields sent by client to log. * means everything.
+  #imap_id_log =
+
+  # Workarounds for various client bugs:
+  #   delay-newmail:
+  #     Send EXISTS/RECENT new mail notifications only when replying to NOOP
+  #     and CHECK commands. Some clients ignore them otherwise, for example OSX
+  #     Mail (<v2.1). Outlook Express breaks more badly though, without this it
+  #     may show user "Message no longer in server" errors. Note that OE6 still
+  #     breaks even with this workaround if synchronization is set to
+  #     "Headers Only".
+  #   tb-extra-mailbox-sep:
+  #     Thunderbird gets somehow confused with LAYOUT=fs (mbox and dbox) and
+  #     adds extra '/' suffixes to mailbox names. This option causes Dovecot to
+  #     ignore the extra '/' instead of treating it as invalid mailbox name.
+  #   tb-lsub-flags:
+  #     Show \Noselect flags for LSUB replies with LAYOUT=fs (e.g. mbox).
+  #     This makes Thunderbird realize they aren't selectable and show them
+  #     greyed out, instead of only later giving "not selectable" popup error.
+  #
+  # The list is space-separated.
+  #imap_client_workarounds =
+}

install/common/dovecot/conf.d/20-pop3.conf

@@ -0,0 +1,92 @@
+##
+## POP3 specific settings
+##
+
+protocol pop3 {
+  # Don't try to set mails non-recent or seen with POP3 sessions. This is
+  # mostly intended to reduce disk I/O. With maildir it doesn't move files
+  # from new/ to cur/, with mbox it doesn't write Status-header.
+  #pop3_no_flag_updates = no
+
+  # Support LAST command which exists in old POP3 specs, but has been removed
+  # from new ones. Some clients still wish to use this though. Enabling this
+  # makes RSET command clear all \Seen flags from messages.
+  #pop3_enable_last = no
+
+  # If mail has X-UIDL header, use it as the mail's UIDL.
+  #pop3_reuse_xuidl = no
+
+  # Keep the mailbox locked for the entire POP3 session.
+  #pop3_lock_session = no
+
+  # POP3 requires message sizes to be listed as if they had CR+LF linefeeds.
+  # Many POP3 servers violate this by returning the sizes with LF linefeeds,
+  # because it's faster to get. When this setting is enabled, Dovecot still
+  # tries to do the right thing first, but if that requires opening the
+  # message, it fallbacks to the easier (but incorrect) size.
+  #pop3_fast_size_lookups = no
+
+  # POP3 UIDL (unique mail identifier) format to use. You can use following
+  # variables, along with the variable modifiers described in
+  # doc/wiki/Variables.txt (e.g. %Uf for the filename in uppercase)
+  #
+  #  %v - Mailbox's IMAP UIDVALIDITY
+  #  %u - Mail's IMAP UID
+  #  %m - MD5 sum of the mailbox headers in hex (mbox only)
+  #  %f - filename (maildir only)
+  #  %g - Mail's GUID
+  #
+  # If you want UIDL compatibility with other POP3 servers, use:
+  #  UW's ipop3d         : %08Xv%08Xu
+  #  Courier             : %f or %v-%u (both might be used simultaneosly)
+  #  Cyrus (<= 2.1.3)    : %u
+  #  Cyrus (>= 2.1.4)    : %v.%u
+  #  Dovecot v0.99.x     : %v.%u
+  #  tpop3d              : %Mf
+  #
+  # Note that Outlook 2003 seems to have problems with %v.%u format which was
+  # Dovecot's default, so if you're building a new server it would be a good
+  # idea to change this. %08Xu%08Xv should be pretty fail-safe.
+  #
+  #pop3_uidl_format = %08Xu%08Xv
+
+  # Permanently save UIDLs sent to POP3 clients, so pop3_uidl_format changes
+  # won't change those UIDLs. Currently this works only with Maildir.
+  #pop3_save_uidl = no
+
+  # What to do about duplicate UIDLs if they exist?
+  #   allow: Show duplicates to clients.
+  #   rename: Append a temporary -2, -3, etc. counter after the UIDL.
+  #pop3_uidl_duplicates = allow
+
+  # POP3 logout format string:
+  #  %i - total number of bytes read from client
+  #  %o - total number of bytes sent to client
+  #  %t - number of TOP commands
+  #  %p - number of bytes sent to client as a result of TOP command
+  #  %r - number of RETR commands
+  #  %b - number of bytes sent to client as a result of RETR command
+  #  %d - number of deleted messages
+  #  %m - number of messages (before deletion)
+  #  %s - mailbox size in bytes (before deletion)
+  #  %u - old/new UIDL hash. may help finding out if UIDLs changed unexpectedly
+  #pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
+
+  # Maximum number of POP3 connections allowed for a user from each IP address.
+  # NOTE: The username is compared case-sensitively.
+  #mail_max_userip_connections = 10
+
+  # Space separated list of plugins to load (default is global mail_plugins).
+  #mail_plugins = $mail_plugins
+  mail_plugins = quota
+
+  # Workarounds for various client bugs:
+  #   outlook-no-nuls:
+  #     Outlook and Outlook Express hang if mails contain NUL characters.
+  #     This setting replaces them with 0x80 character.
+  #   oe-ns-eoh:
+  #     Outlook Express and Netscape Mail breaks if end of headers-line is
+  #     missing. This option simply sends it if it's missing.
+  # The list is space-separated.
+  #pop3_client_workarounds =
+}

install/common/dovecot/conf.d/90-quota.conf

@@ -0,0 +1,84 @@
+##
+## Quota configuration.
+##
+
+# Note that you also have to enable quota plugin in mail_plugins setting.
+# <doc/wiki/Quota.txt>
+
+##
+## Quota limits
+##
+
+# Quota limits are set using "quota_rule" parameters. To get per-user quota
+# limits, you can set/override them by returning "quota_rule" extra field
+# from userdb. It's also possible to give mailbox-specific limits, for example
+# to give additional 100 MB when saving to Trash:
+
+plugin {
+  #quota_rule = *:storage=1G
+  #quota_rule2 = Trash:storage=+100M
+
+  # LDA/LMTP allows saving the last mail to bring user from under quota to
+  # over quota, if the quota doesn't grow too high. Default is to allow as
+  # long as quota will stay under 10% above the limit. Also allowed e.g. 10M.
+  #quota_grace = 10%%
+
+  # Quota plugin can also limit the maximum accepted mail size.
+  #quota_max_mail_size = 100M
+}
+
+##
+## Quota warnings
+##
+
+# You can execute a given command when user exceeds a specified quota limit.
+# Each quota root has separate limits. Only the command for the first
+# exceeded limit is excecuted, so put the highest limit first.
+# The commands are executed via script service by connecting to the named
+# UNIX socket (quota-warning below).
+# Note that % needs to be escaped as %%, otherwise "% " expands to empty.
+
+plugin {
+  #quota_warning = storage=95%% quota-warning 95 %u
+  #quota_warning2 = storage=80%% quota-warning 80 %u
+}
+
+# Example quota-warning service. The unix listener's permissions should be
+# set in a way that mail processes can connect to it. Below example assumes
+# that mail processes run as vmail user. If you use mode=0666, all system users
+# can generate quota warnings to anyone.
+#service quota-warning {
+#  executable = script /usr/local/bin/quota-warning.sh
+#  user = dovecot
+#  unix_listener quota-warning {
+#    user = vmail
+#  }
+#}
+
+##
+## Quota backends
+##
+
+# Multiple backends are supported:
+#   dirsize: Find and sum all the files found from mail directory.
+#            Extremely SLOW with Maildir. It'll eat your CPU and disk I/O.
+#   dict: Keep quota stored in dictionary (eg. SQL)
+#   maildir: Maildir++ quota
+#   fs: Read-only support for filesystem quota
+
+plugin {
+  #quota = dirsize:User quota
+  quota = maildir:User quota
+  #quota = dict:User quota::proxy::quota
+  #quota = fs:User quota
+}
+
+# Multiple quota roots are also possible, for example this gives each user
+# their own 100MB quota and one shared 1GB quota within the domain:
+plugin {
+  #quota = dict:user::proxy::quota
+  #quota2 = dict:domain:%d:proxy::quota_domain
+  #quota_rule = *:storage=102400
+  #quota2_rule = *:storage=1048576
+}
+

install/common/dovecot/conf.d/auth-passwdfile.conf.ext

@@ -0,0 +1,9 @@
+passdb {
+  driver = passwd-file
+  args = scheme=MD5-CRYPT username_format=%n /etc/exim4/domains/%d/passwd
+}
+
+userdb {
+  driver = passwd-file
+  args = username_format=%n /etc/exim4/domains/%d/passwd
+}

install/common/dovecot/dovecot.conf

@@ -0,0 +1,66 @@
+protocols = imap pop3
+listen = *, ::
+base_dir = /run/dovecot/
+login_greeting = Mail Delivery Agent
+!include conf.d/*.conf
+!include_try conf.d/domains/*.conf
+
+service stats {
+  unix_listener stats-writer {
+    group = mail
+    mode = 0660
+    user = dovecot
+  }
+}
+
+namespace {
+    type = private
+    separator = /
+    inbox = yes
+    list = yes
+
+    mailbox Archive {
+        auto = subscribe
+        special_use = \Archive
+    }
+
+    mailbox Drafts {
+        auto = subscribe
+        special_use = \Drafts
+    }
+
+    mailbox Trash {
+        auto = subscribe
+        special_use = \Trash
+    }
+
+    mailbox "Deleted Messages" {
+        auto = no
+        special_use = \Trash
+    }
+
+    mailbox Spam {
+        auto = subscribe
+        special_use = \Junk
+    }
+
+    mailbox Junk {
+        auto = no
+        special_use = \Junk
+    }
+
+    mailbox Sent {
+        auto = subscribe
+        special_use = \Sent
+    }
+
+    mailbox "Sent Mail" {
+        auto = no
+        special_use = \Sent
+    }
+
+    mailbox "Sent Messages" {
+        auto = no
+        special_use = \Sent
+    }
+}

install/common/dovecot/sieve/20-managesieve.conf

@@ -0,0 +1,88 @@
+##
+## ManageSieve specific settings
+##
+
+# Uncomment to enable managesieve protocol:
+protocols = $protocols sieve
+
+# Service definitions
+
+service managesieve-login {
+  inet_listener sieve {
+    port = 4190
+  }
+
+  #inet_listener sieve_deprecated {
+  #  port = 2000
+  #}
+
+  # Number of connections to handle before starting a new process. Typically
+  # the only useful values are 0 (unlimited) or 1. 1 is more secure, but 0
+  # is faster. <doc/wiki/LoginProcess.txt>
+  #service_count = 1
+
+  # Number of processes to always keep waiting for more connections.
+  #process_min_avail = 0
+
+  # If you set service_count=0, you probably need to grow this.
+  #vsz_limit = 64M
+}
+
+#service managesieve {
+  # Max. number of ManageSieve processes (connections)
+  #process_limit = 1024
+#}
+
+# Service configuration
+
+protocol sieve {
+  # Maximum ManageSieve command line length in bytes. ManageSieve usually does
+  # not involve overly long command lines, so this setting will not normally
+  # need adjustment
+  managesieve_max_line_length = 65536
+
+  # Maximum number of ManageSieve connections allowed for a user from each IP
+  # address.
+  # NOTE: The username is compared case-sensitively.
+  #mail_max_userip_connections = 10
+
+  # Space separated list of plugins to load (none known to be useful so far).
+  # Do NOT try to load IMAP plugins here.
+  #mail_plugins =
+
+  # MANAGESIEVE logout format string:
+  #  %i - total number of bytes read from client
+  #  %o - total number of bytes sent to client
+  #  %{put_bytes} - Number of bytes saved using PUTSCRIPT command
+  #  %{put_count} - Number of scripts saved using PUTSCRIPT command
+  #  %{get_bytes} - Number of bytes read using GETCRIPT command
+  #  %{get_count} - Number of scripts read using GETSCRIPT command
+  #  %{get_bytes} - Number of bytes processed using CHECKSCRIPT command
+  #  %{get_count} - Number of scripts checked using CHECKSCRIPT command
+  #  %{deleted_count} - Number of scripts deleted using DELETESCRIPT command
+  #  %{renamed_count} - Number of scripts renamed using RENAMESCRIPT command
+  #managesieve_logout_format = bytes=%i/%o
+
+  # To fool ManageSieve clients that are focused on CMU's timesieved you can
+  # specify the IMPLEMENTATION capability that Dovecot reports to clients.
+  # For example: 'Cyrus timsieved v2.2.13'
+  managesieve_implementation_string = Dovecot Pigeonhole
+
+  # Explicitly specify the SIEVE and NOTIFY capability reported by the server
+  # before login. If left unassigned these will be reported dynamically
+  # according to what the Sieve interpreter supports by default (after login
+  # this may differ depending on the user).
+  #managesieve_sieve_capability =
+  #managesieve_notify_capability =
+
+  # The maximum number of compile errors that are returned to the client upon
+  # script upload or script verification.
+  #managesieve_max_compile_errors = 5
+
+  # Refer to 90-sieve.conf for script quota configuration and configuration of
+  # Sieve execution limits.
+
+  #log_path = /var/log/dovecot-sieve-errors.log
+  #info_log_path = /var/log/dovecot-sieve.log
+
+}

install/common/dovecot/sieve/90-sieve-extprograms.conf

@@ -0,0 +1,44 @@
+# Sieve Extprograms plugin configuration
+
+# Don't forget to add the sieve_extprograms plugin to the sieve_plugins setting.
+# Also enable the extensions you need (one or more of vnd.dovecot.pipe,
+# vnd.dovecot.filter and vnd.dovecot.execute) by adding these	to the
+# sieve_extensions or sieve_global_extensions settings. Restricting these
+# extensions to a global context using sieve_global_extensions is recommended.
+
+plugin {
+
+  # The directory where the program sockets are located for the
+  # vnd.dovecot.pipe, vnd.dovecot.filter and vnd.dovecot.execute extension
+  # respectively. The name of each unix socket contained in that directory
+  # directly maps to a program-name referenced from the Sieve script.
+  #sieve_pipe_socket_dir = sieve-pipe
+  #sieve_filter_socket_dir = sieve-filter
+  #sieve_execute_socket_dir = sieve-execute
+
+  # The directory where the scripts are located for direct execution by the
+  # vnd.dovecot.pipe, vnd.dovecot.filter and vnd.dovecot.execute extension
+  # respectively. The name of each script contained in that directory
+  # directly maps to a program-name referenced from the Sieve script.
+  #sieve_pipe_bin_dir = /usr/lib/dovecot/sieve-pipe
+  #sieve_filter_bin_dir = /usr/lib/dovecot/sieve-filter
+  #sieve_execute_bin_dir = /usr/lib/dovecot/sieve-execute
+
+}
+
+# An example program service called 'do-something' to pipe messages to
+#service do-something {
+  # Define the executed script as parameter to the sieve service
+  #executable = script /usr/lib/dovecot/sieve-pipe/do-something.sh
+
+  # Use some unprivileged user for executing the program
+  #user = dovenull
+
+  # The unix socket located in the sieve_pipe_socket_dir (as defined in the
+  # plugin {} section above)
+  #unix_listener sieve-pipe/do-something {
+    # LDA/LMTP must have access
+  #  user = vmail
+  #  mode = 0600
+  #}
+#}

install/common/dovecot/sieve/90-sieve.conf

@@ -0,0 +1,211 @@
+##
+## Settings for the Sieve interpreter
+##
+
+# Do not forget to enable the Sieve plugin in 15-lda.conf and 20-lmtp.conf
+# by adding it to the respective mail_plugins= settings.
+
+# The Sieve interpreter can retrieve Sieve scripts from several types of
+# locations. The default `file' location type is a local filesystem path
+# pointing to a Sieve script file or a directory containing multiple Sieve
+# script files. More complex setups can use other location types such as
+# `ldap' or `dict' to fetch Sieve scripts from remote databases.
+#
+# All settings that specify the location of one ore more Sieve scripts accept
+# the following syntax:
+#
+# location = [<type>:]path[;<option>[=<value>][;...]]
+#
+# If the type prefix is omitted, the script location type is 'file' and the
+# location is interpreted as a local filesystem path pointing to a Sieve script
+# file or directory. Refer to Pigeonhole wiki or INSTALL file for more
+# information.
+
+plugin {
+  # The location of the user's main Sieve script or script storage. The LDA
+  # Sieve plugin uses this to find the active script for Sieve filtering at
+  # delivery. The "include" extension uses this location for retrieving
+  # :personal" scripts. This is also where the  ManageSieve service will store
+  # the user's scripts, if supported.
+  #
+  # Currently only the 'file:' location type supports ManageSieve operation.
+  # Other location types like 'dict:' and 'ldap:' can currently only
+  # be used as a read-only script source ().
+  #
+  # For the 'file:' type: use the ';active=' parameter to specify where the
+  # active script symlink is located.
+  # For other types: use the ';name=' parameter to specify the name of the
+  # default/active script.
+  #sieve = file:~/sieve;active=~/.dovecot.sieve
+  sieve = file:~/mail/%d/%n/sieve;active=~/mail/%d/%n/dovecot.sieve
+
+  # The default Sieve script when the user has none. This is the location of a
+  # global sieve script file, which gets executed ONLY if user's personal Sieve
+  # script doesn't exist. Be sure to pre-compile this script manually using the
+  # sievec command line tool if the binary is not stored in a global location.
+  # --> See sieve_before for executing scripts before the user's personal
+  #     script.
+  #sieve_default = /var/lib/dovecot/sieve/default.sieve
+
+  # The name by which the default Sieve script (as configured by the
+  # sieve_default setting) is visible to the user through ManageSieve.
+  #sieve_default_name =
+
+  # Location for ":global" include scripts as used by the "include" extension.
+  #sieve_global =
+
+  # The location of a Sieve script that is run for any message that is about to
+  # be discarded; i.e., it is not delivered anywhere by the normal Sieve
+  # execution. This only happens when the "implicit keep" is canceled, by e.g.
+  # the "discard" action, and no actions that deliver the message are executed.
+  # This "discard script" can prevent discarding the message, by executing
+  # alternative actions. If the discard script does nothing, the message is
+	# still discarded as it would be when no discard script is configured.
+  #sieve_discard =
+
+  # Location Sieve of scripts that need to be executed before the user's
+  # personal script. If a 'file' location path points to a directory, all the
+  # Sieve scripts contained therein (with the proper `.sieve' extension) are
+  # executed. The order of execution within that directory is determined by the
+  # file names, using a normal 8bit per-character comparison.
+  #
+  # Multiple script locations can be specified by appending an increasing number
+  # to the setting name. The Sieve scripts found from these locations are added
+  # to the script execution sequence in the specified order. Reading the
+  # numbered sieve_before settings stops at the first missing setting, so no
+  # numbers may be skipped.
+  #sieve_before = /var/lib/dovecot/sieve.d/
+  #sieve_before2 = ldap:/etc/sieve-ldap.conf;name=ldap-domain
+  #sieve_before3 = (etc...)
+
+  # Identical to sieve_before, only the specified scripts are executed after the
+  # user's script (only when keep is still in effect!). Multiple script
+  # locations can be specified by appending an increasing number.
+  #sieve_after =
+  #sieve_after2 =
+  #sieve_after2 = (etc...)
+
+  # Which Sieve language extensions are available to users. By default, all
+  # supported extensions are available, except for deprecated extensions or
+  # those that are still under development. Some system administrators may want
+  # to disable certain Sieve extensions or enable those that are not available
+  # by default. This setting can use '+' and '-' to specify differences relative
+  # to the default. For example `sieve_extensions = +imapflags' will enable the
+  # deprecated imapflags extension in addition to all extensions were already
+  # enabled by default.
+  sieve_extensions = +notify +imapflags
+
+  # Which Sieve language extensions are ONLY available in global scripts. This
+  # can be used to restrict the use of certain Sieve extensions to administrator
+  # control, for instance when these extensions can cause security concerns.
+  # This setting has higher precedence than the `sieve_extensions' setting
+  # (above), meaning that the extensions enabled with this setting are never
+  # available to the user's personal script no matter what is specified for the
+  # `sieve_extensions' setting. The syntax of this setting is similar to the
+  # `sieve_extensions' setting, with the difference that extensions are
+  # enabled or disabled for exclusive use in global scripts. Currently, no
+  # extensions are marked as such by default.
+  sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment
+
+  # The Pigeonhole Sieve interpreter can have plugins of its own. Using this
+  # setting, the used plugins can be specified. Check the Dovecot wiki
+  # (wiki2.dovecot.org) or the pigeonhole website
+  # (http://pigeonhole.dovecot.org) for available plugins.
+  # The sieve_extprograms plugin is included in this release.
+  sieve_plugins = sieve_imapsieve sieve_extprograms
+
+  sieve_pipe_bin_dir = /etc/dovecot/sieve
+
+  # The maximum size of a Sieve script. The compiler will refuse to compile any
+  # script larger than this limit. If set to 0, no limit on the script size is
+  # enforced.
+  #sieve_max_script_size = 1M
+
+  # The maximum number of actions that can be performed during a single script
+  # execution. If set to 0, no limit on the total number of actions is enforced.
+  #sieve_max_actions = 32
+
+  # The maximum number of redirect actions that can be performed during a single
+  # script execution. If set to 0, no redirect actions are allowed.
+  #sieve_max_redirects = 4
+
+  # The maximum number of personal Sieve scripts a single user can have. If set
+  # to 0, no limit on the number of scripts is enforced.
+  # (Currently only relevant for ManageSieve)
+  #sieve_quota_max_scripts = 0
+
+  # The maximum amount of disk storage a single user's scripts may occupy. If
+  # set to 0, no limit on the used amount of disk storage is enforced.
+  # (Currently only relevant for ManageSieve)
+  #sieve_quota_max_storage = 0
+
+  # The primary e-mail address for the user. This is used as a default when no
+  # other appropriate address is available for sending messages. If this setting
+  # is not configured, either the postmaster or null "<>" address is used as a
+  # sender, depending on the action involved. This setting is important when
+  # there is no message envelope to extract addresses from, such as when the
+  # script is executed in IMAP.
+  #sieve_user_email =
+
+  # The path to the file where the user log is written. If not configured, a
+  # default location is used. If the main user's personal Sieve (as configured
+  # with sieve=) is a file, the logfile is set to <filename>.log by default. If
+  # it is not a file, the default user log file is ~/.dovecot.sieve.log.
+  #sieve_user_log =
+
+  # Specifies what envelope sender address is used for redirected messages.
+  # The following values are supported for this setting:
+  #
+  #   "sender"         - The sender address is used (default).
+  #   "recipient"      - The final recipient address is used.
+  #   "orig_recipient" - The original recipient is used.
+  #   "user_email"     - The user's primary address is used. This is
+  #                      configured with the "sieve_user_email" setting. If
+  #                      that setting is unconfigured, "user_mail" is equal to
+  #                      "recipient".
+  #   "postmaster"     - The postmaster_address configured for the LDA.
+  #   "<user@domain>"  - Redirected messages are always sent from user@domain.
+  #                      The angle brackets are mandatory. The null "<>" address
+  #                      is also supported.
+  #
+  # This setting is ignored when the envelope sender is "<>". In that case the
+  # sender of the redirected message is also always "<>".
+  #sieve_redirect_envelope_from = sender
+
+  ## TRACE DEBUGGING
+  # Trace debugging provides detailed insight in the operations performed by
+  # the Sieve script. These settings apply to both the LDA Sieve plugin and the
+  # IMAPSIEVE plugin.
+  #
+  # WARNING: On a busy server, this functionality can quickly fill up the trace
+  # directory with a lot of trace files. Enable this only temporarily and as
+  # selective as possible.
+
+  # The directory where trace files are written. Trace debugging is disabled if
+  # this setting is not configured or if the directory does not exist. If the
+  # path is relative or it starts with "~/" it is interpreted relative to the
+  # current user's home directory.
+  #sieve_trace_dir =
+
+  # The verbosity level of the trace messages. Trace debugging is disabled if
+  # this setting is not configured. Possible values are:
+  #
+  #   "actions"        - Only print executed action commands, like keep,
+  #                      fileinto, reject and redirect.
+  #   "commands"       - Print any executed command, excluding test commands.
+  #   "tests"          - Print all executed commands and performed tests.
+  #   "matching"       - Print all executed commands, performed tests and the
+  #                      values matched in those tests.
+  #sieve_trace_level =
+
+  # Enables highly verbose debugging messages that are usually only useful for
+  # developers.
+  #sieve_trace_debug = no
+
+  # Enables showing byte code addresses in the trace output, rather than only
+  # the source line numbers.
+  #sieve_trace_addresses = no
+
+  # This setting determines whether vacation messages are sent with the SMTP MAIL FROM envelope address set to the recipient address of the Sieve script owner.
+  sieve_vacation_send_from_recipient = yes
+}