Add Dovecot-related tweaks.

22 files changed, 1416 insertions, 0 deletions

diff --git a/dovecot/conf.d/10-auth.conf b/dovecot/conf.d/10-auth.conf
new file mode 100644
index 0000000..7850fa4
--- /dev/null
+++ b/dovecot/conf.d/10-auth.conf
@@ -0,0 +1,128 @@
+##
+## Authentication processes
+##
+
+# Disable LOGIN command and all other plaintext authentications unless
+# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
+# matches the local IP (ie. you're connecting from the same computer), the
+# connection is considered secure and plaintext authentication is allowed.
+# See also ssl=required setting.
+#disable_plaintext_auth = yes
+
+# Authentication cache size (e.g. 10M). 0 means it's disabled. Note that
+# bsdauth, PAM and vpopmail require cache_key to be set for caching to be used.
+#auth_cache_size = 0
+# Time to live for cached data. After TTL expires the cached record is no
+# longer used, *except* if the main database lookup returns internal failure.
+# We also try to handle password changes automatically: If user's previous
+# authentication was successful, but this one wasn't, the cache isn't used.
+# For now this works only with plaintext authentication.
+#auth_cache_ttl = 1 hour
+# TTL for negative hits (user not found, password mismatch).
+# 0 disables caching them completely.
+#auth_cache_negative_ttl = 1 hour
+
+# Space separated list of realms for SASL authentication mechanisms that need
+# them. You can leave it empty if you don't want to support multiple realms.
+# Many clients simply use the first one listed here, so keep the default realm
+# first.
+#auth_realms =
+
+# Default realm/domain to use if none was specified. This is used for both
+# SASL realms and appending @domain to username in plaintext logins.
+#auth_default_realm = 
+
+# List of allowed characters in username. If the user-given username contains
+# a character not listed in here, the login automatically fails. This is just
+# an extra check to make sure user can't exploit any potential quote escaping
+# vulnerabilities with SQL/LDAP databases. If you want to allow all characters,
+# set this value to empty.
+#auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
+
+# Username character translations before it's looked up from databases. The
+# value contains series of from -> to characters. For example "#@/@" means
+# that '#' and '/' characters are translated to '@'.
+#auth_username_translation =
+
+# Username formatting before it's looked up from databases. You can use
+# the standard variables here, eg. %Lu would lowercase the username, %n would
+# drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
+# "-AT-". This translation is done after auth_username_translation changes.
+auth_username_format = %Ln
+
+# If you want to allow master users to log in by specifying the master
+# username within the normal username string (ie. not using SASL mechanism's
+# support for it), you can specify the separator character here. The format
+# is then <username><separator><master username>. UW-IMAP uses "*" as the
+# separator, so that could be a good choice.
+#auth_master_user_separator =
+
+# Username to use for users logging in with ANONYMOUS SASL mechanism
+#auth_anonymous_username = anonymous
+
+# Maximum number of dovecot-auth worker processes. They're used to execute
+# blocking passdb and userdb queries (eg. MySQL and PAM). They're
+# automatically created and destroyed as needed.
+#auth_worker_max_count = 30
+
+# Host name to use in GSSAPI principal names. The default is to use the
+# name returned by gethostname(). Use "$ALL" (with quotes) to allow all keytab
+# entries.
+#auth_gssapi_hostname =
+
+# Kerberos keytab to use for the GSSAPI mechanism. Will use the system
+# default (usually /etc/krb5.keytab) if not specified. You may need to change
+# the auth service to run as root to be able to read this file.
+#auth_krb5_keytab = 
+
+# Do NTLM and GSS-SPNEGO authentication using Samba's winbind daemon and
+# ntlm_auth helper. <doc/wiki/Authentication/Mechanisms/Winbind.txt>
+#auth_use_winbind = no
+
+# Path for Samba's ntlm_auth helper binary.
+#auth_winbind_helper_path = /usr/bin/ntlm_auth
+
+# Time to delay before replying to failed authentications.
+#auth_failure_delay = 2 secs
+
+# Require a valid SSL client certificate or the authentication fails.
+#auth_ssl_require_client_cert = no
+
+# Take the username from client's SSL certificate, using 
+# X509_NAME_get_text_by_NID() which returns the subject's DN's
+# CommonName. 
+#auth_ssl_username_from_cert = no
+
+# Space separated list of wanted authentication mechanisms:
+#   plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey
+#   gss-spnego
+# NOTE: See also disable_plaintext_auth setting.
+auth_mechanisms = plain login
+
+##
+## Password and user databases
+##
+
+#
+# Password database is used to verify user's password (and nothing more).
+# You can have multiple passdbs and userdbs. This is useful if you want to
+# allow both system users (/etc/passwd) and virtual users to login without
+# duplicating the system users into virtual database.
+#
+# <doc/wiki/PasswordDatabase.txt>
+#
+# User database specifies where mails are located and what user/group IDs
+# own them. For single-UID configuration use "static" userdb.
+#
+# <doc/wiki/UserDatabase.txt>
+
+#!include auth-deny.conf.ext
+#!include auth-master.conf.ext
+
+!include auth-system.conf.ext
+#!include auth-sql.conf.ext
+#!include auth-ldap.conf.ext
+#!include auth-passwdfile.conf.ext
+#!include auth-checkpassword.conf.ext
+#!include auth-vpopmail.conf.ext
+#!include auth-static.conf.ext
diff --git a/dovecot/conf.d/10-auth.conf.diff b/dovecot/conf.d/10-auth.conf.diff
new file mode 100644
index 0000000..0f102cd
--- /dev/null
+++ b/dovecot/conf.d/10-auth.conf.diff
@@ -0,0 +1,20 @@
+--- 10-auth.conf.orig	2014-07-07 23:26:30.000000000 +0200
++++ 10-auth.conf	2016-10-24 15:20:30.000000000 +0200
+@@ -48,7 +48,7 @@
+ # the standard variables here, eg. %Lu would lowercase the username, %n would
+ # drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
+ # "-AT-". This translation is done after auth_username_translation changes.
+-#auth_username_format = %Lu
++auth_username_format = %Ln
+ 
+ # If you want to allow master users to log in by specifying the master
+ # username within the normal username string (ie. not using SASL mechanism's
+@@ -97,7 +97,7 @@
+ #   plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey
+ #   gss-spnego
+ # NOTE: See also disable_plaintext_auth setting.
+-auth_mechanisms = plain
++auth_mechanisms = plain login
+ 
+ ##
+ ## Password and user databases
diff --git a/dovecot/conf.d/10-mail.conf b/dovecot/conf.d/10-mail.conf
new file mode 100644
index 0000000..ce951f1
--- /dev/null
+++ b/dovecot/conf.d/10-mail.conf
@@ -0,0 +1,385 @@
+##
+## Mailbox locations and namespaces
+##
+
+# Location for users' mailboxes. The default is empty, which means that Dovecot
+# tries to find the mailboxes automatically. This won't work if the user
+# doesn't yet have any mail, so you should explicitly tell Dovecot the full
+# location.
+#
+# If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u)
+# isn't enough. You'll also need to tell Dovecot where the other mailboxes are
+# kept. This is called the "root mail directory", and it must be the first
+# path given in the mail_location setting.
+#
+# There are a few special variables you can use, eg.:
+#
+#   %u - username
+#   %n - user part in user@domain, same as %u if there's no domain
+#   %d - domain part in user@domain, empty if there's no domain
+#   %h - home directory
+#
+# See doc/wiki/Variables.txt for full list. Some examples:
+#
+#   mail_location = maildir:~/Maildir
+#   mail_location = mbox:~/mail:INBOX=/var/mail/%u
+#   mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
+#
+# <doc/wiki/MailLocation.txt>
+#
+mail_location = maildir:~/Maildir
+
+# If you need to set multiple mailbox locations or want to change default
+# namespace settings, you can do it by defining namespace sections.
+#
+# You can have private, shared and public namespaces. Private namespaces
+# are for user's personal mails. Shared namespaces are for accessing other
+# users' mailboxes that have been shared. Public namespaces are for shared
+# mailboxes that are managed by sysadmin. If you create any shared or public
+# namespaces you'll typically want to enable ACL plugin also, otherwise all
+# users can access all the shared mailboxes, assuming they have permissions
+# on filesystem level to do so.
+namespace inbox {
+  # Namespace type: private, shared or public
+  #type = private
+
+  # Hierarchy separator to use. You should use the same separator for all
+  # namespaces or some clients get confused. '/' is usually a good one.
+  # The default however depends on the underlying mail storage format.
+  #separator = 
+
+  # Prefix required to access this namespace. This needs to be different for
+  # all namespaces. For example "Public/".
+  #prefix = 
+
+  # Physical location of the mailbox. This is in same format as
+  # mail_location, which is also the default for it.
+  #location =
+
+  # There can be only one INBOX, and this setting defines which namespace
+  # has it.
+  inbox = yes
+
+  # If namespace is hidden, it's not advertised to clients via NAMESPACE
+  # extension. You'll most likely also want to set list=no. This is mostly
+  # useful when converting from another server with different namespaces which
+  # you want to deprecate but still keep working. For example you can create
+  # hidden namespaces with prefixes "~/mail/", "~%u/mail/" and "mail/".
+  #hidden = no
+
+  # Show the mailboxes under this namespace with LIST command. This makes the
+  # namespace visible for clients that don't support NAMESPACE extension.
+  # "children" value lists child mailboxes, but hides the namespace prefix.
+  #list = yes
+
+  # Namespace handles its own subscriptions. If set to "no", the parent
+  # namespace handles them (empty prefix should always have this as "yes")
+  #subscriptions = yes
+
+  # See 15-mailboxes.conf for definitions of special mailboxes.
+}
+
+# Example shared namespace configuration
+#namespace {
+  #type = shared
+  #separator = /
+
+  # Mailboxes are visible under "shared/user@domain/"
+  # %%n, %%d and %%u are expanded to the destination user.
+  #prefix = shared/%%u/
+
+  # Mail location for other users' mailboxes. Note that %variables and ~/
+  # expands to the logged in user's data. %%n, %%d, %%u and %%h expand to the
+  # destination user's data.
+  #location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
+
+  # Use the default namespace for saving subscriptions.
+  #subscriptions = no
+
+  # List the shared/ namespace only if there are visible shared mailboxes.
+  #list = children
+#}
+# Should shared INBOX be visible as "shared/user" or "shared/user/INBOX"?
+#mail_shared_explicit_inbox = no
+
+# System user and group used to access mails. If you use multiple, userdb
+# can override these by returning uid or gid fields. You can use either numbers
+# or names. <doc/wiki/UserIds.txt>
+#mail_uid =
+#mail_gid =
+
+# Group to enable temporarily for privileged operations. Currently this is
+# used only with INBOX when either its initial creation or dotlocking fails.
+# Typically this is set to "mail" to give access to /var/mail.
+#mail_privileged_group =
+
+# Grant access to these supplementary groups for mail processes. Typically
+# these are used to set up access to shared mailboxes. Note that it may be
+# dangerous to set these if users can create symlinks (e.g. if "mail" group is
+# set here, ln -s /var/mail ~/mail/var could allow a user to delete others'
+# mailboxes, or ln -s /secret/shared/box ~/mail/mybox would allow reading it).
+#mail_access_groups =
+
+# Allow full filesystem access to clients. There's no access checks other than
+# what the operating system does for the active UID/GID. It works with both
+# maildir and mboxes, allowing you to prefix mailboxes names with eg. /path/
+# or ~user/.
+#mail_full_filesystem_access = no
+
+# Dictionary for key=value mailbox attributes. This is used for example by
+# URLAUTH and METADATA extensions.
+#mail_attribute_dict =
+
+# A comment or note that is associated with the server. This value is
+# accessible for authenticated users through the IMAP METADATA server
+# entry "/shared/comment". 
+#mail_server_comment = ""
+
+# Indicates a method for contacting the server administrator. According to
+# RFC 5464, this value MUST be a URI (e.g., a mailto: or tel: URL), but that
+# is currently not enforced. Use for example mailto:admin@example.com. This
+# value is accessible for authenticated users through the IMAP METADATA server
+# entry "/shared/admin".
+#mail_server_admin = 
+
+##
+## Mail processes
+##
+
+# Don't use mmap() at all. This is required if you store indexes to shared
+# filesystems (NFS or clustered filesystem).
+#mmap_disable = no
+
+# Rely on O_EXCL to work when creating dotlock files. NFS supports O_EXCL
+# since version 3, so this should be safe to use nowadays by default.
+#dotlock_use_excl = yes
+
+# When to use fsync() or fdatasync() calls:
+#   optimized (default): Whenever necessary to avoid losing important data
+#   always: Useful with e.g. NFS when write()s are delayed
+#   never: Never use it (best performance, but crashes can lose data)
+#mail_fsync = optimized
+
+# Locking method for index files. Alternatives are fcntl, flock and dotlock.
+# Dotlocking uses some tricks which may create more disk I/O than other locking
+# methods. NFS users: flock doesn't work, remember to change mmap_disable.
+#lock_method = fcntl
+
+# Directory in which LDA/LMTP temporarily stores incoming mails >128 kB.
+#mail_temp_dir = /tmp
+
+# Valid UID range for users, defaults to 500 and above. This is mostly
+# to make sure that users can't log in as daemons or other system users.
+# Note that denying root logins is hardcoded to dovecot binary and can't
+# be done even if first_valid_uid is set to 0.
+#first_valid_uid = 500
+#last_valid_uid = 0
+
+# Valid GID range for users, defaults to non-root/wheel. Users having
+# non-valid GID as primary group ID aren't allowed to log in. If user
+# belongs to supplementary groups with non-valid GIDs, those groups are
+# not set.
+#first_valid_gid = 1
+#last_valid_gid = 0
+
+# Maximum allowed length for mail keyword name. It's only forced when trying
+# to create new keywords.
+#mail_max_keyword_length = 50
+
+# ':' separated list of directories under which chrooting is allowed for mail
+# processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar too).
+# This setting doesn't affect login_chroot, mail_chroot or auth chroot
+# settings. If this setting is empty, "/./" in home dirs are ignored.
+# WARNING: Never add directories here which local users can modify, that
+# may lead to root exploit. Usually this should be done only if you don't
+# allow shell access for users. <doc/wiki/Chrooting.txt>
+#valid_chroot_dirs = 
+
+# Default chroot directory for mail processes. This can be overridden for
+# specific users in user database by giving /./ in user's home directory
+# (eg. /home/./user chroots into /home). Note that usually there is no real
+# need to do chrooting, Dovecot doesn't allow users to access files outside
+# their mail directory anyway. If your home directories are prefixed with
+# the chroot directory, append "/." to mail_chroot. <doc/wiki/Chrooting.txt>
+#mail_chroot = 
+
+# UNIX socket path to master authentication server to find users.
+# This is used by imap (for shared users) and lda.
+#auth_socket_path = /var/run/dovecot/auth-userdb
+
+# Directory where to look up mail plugins.
+#mail_plugin_dir = /usr/lib/dovecot/modules
+
+# Space separated list of plugins to load for all services. Plugins specific to
+# IMAP, LDA, etc. are added to this list in their own .conf files.
+mail_plugins = fts fts_lucene
+
+##
+## Mailbox handling optimizations
+##
+
+# Mailbox list indexes can be used to optimize IMAP STATUS commands. They are
+# also required for IMAP NOTIFY extension to be enabled.
+mailbox_list_index = yes
+
+# The minimum number of mails in a mailbox before updates are done to cache
+# file. This allows optimizing Dovecot's behavior to do less disk writes at
+# the cost of more disk reads.
+#mail_cache_min_mail_count = 0
+
+# When IDLE command is running, mailbox is checked once in a while to see if
+# there are any new mails or other changes. This setting defines the minimum
+# time to wait between those checks. Dovecot can also use inotify and
+# kqueue to find out immediately when changes occur.
+#mailbox_idle_check_interval = 30 secs
+
+# Save mails with CR+LF instead of plain LF. This makes sending those mails
+# take less CPU, especially with sendfile() syscall with Linux and FreeBSD.
+# But it also creates a bit more disk I/O which may just make it slower.
+# Also note that if other software reads the mboxes/maildirs, they may handle
+# the extra CRs wrong and cause problems.
+#mail_save_crlf = no
+
+# Max number of mails to keep open and prefetch to memory. This only works with
+# some mailbox formats and/or operating systems.
+#mail_prefetch_count = 0
+
+# How often to scan for stale temporary files and delete them (0 = never).
+# These should exist only after Dovecot dies in the middle of saving mails.
+#mail_temp_scan_interval = 1w
+
+##
+## Maildir-specific settings
+##
+
+# By default LIST command returns all entries in maildir beginning with a dot.
+# Enabling this option makes Dovecot return only entries which are directories.
+# This is done by stat()ing each entry, so it causes more disk I/O.
+# (For systems setting struct dirent->d_type, this check is free and it's
+# done always regardless of this setting)
+#maildir_stat_dirs = no
+
+# When copying a message, do it with hard links whenever possible. This makes
+# the performance much better, and it's unlikely to have any side effects.
+#maildir_copy_with_hardlinks = yes
+
+# Assume Dovecot is the only MUA accessing Maildir: Scan cur/ directory only
+# when its mtime changes unexpectedly or when we can't find the mail otherwise.
+maildir_very_dirty_syncs = yes
+
+# If enabled, Dovecot doesn't use the S=<size> in the Maildir filenames for
+# getting the mail's physical size, except when recalculating Maildir++ quota.
+# This can be useful in systems where a lot of the Maildir filenames have a
+# broken size. The performance hit for enabling this is very small.
+#maildir_broken_filename_sizes = no
+
+# Always move mails from new/ directory to cur/, even when the \Recent flags
+# aren't being reset.
+#maildir_empty_new = no
+
+##
+## mbox-specific settings
+##
+
+# Which locking methods to use for locking mbox. There are four available:
+#  dotlock: Create <mailbox>.lock file. This is the oldest and most NFS-safe
+#           solution. If you want to use /var/mail/ like directory, the users
+#           will need write access to that directory.
+#  dotlock_try: Same as dotlock, but if it fails because of permissions or
+#               because there isn't enough disk space, just skip it.
+#  fcntl  : Use this if possible. Works with NFS too if lockd is used.
+#  flock  : May not exist in all systems. Doesn't work with NFS.
+#  lockf  : May not exist in all systems. Doesn't work with NFS.
+#
+# You can use multiple locking methods; if you do the order they're declared
+# in is important to avoid deadlocks if other MTAs/MUAs are using multiple
+# locking methods as well. Some operating systems don't allow using some of
+# them simultaneously.
+#
+# The Debian value for mbox_write_locks differs from upstream Dovecot. It is
+# changed to be compliant with Debian Policy (section 11.6) for NFS safety.
+#       Dovecot: mbox_write_locks = dotlock fcntl
+#       Debian:  mbox_write_locks = fcntl dotlock
+#
+#mbox_read_locks = fcntl
+#mbox_write_locks = fcntl dotlock
+
+# Maximum time to wait for lock (all of them) before aborting.
+#mbox_lock_timeout = 5 mins
+
+# If dotlock exists but the mailbox isn't modified in any way, override the
+# lock file after this much time.
+#mbox_dotlock_change_timeout = 2 mins
+
+# When mbox changes unexpectedly we have to fully read it to find out what
+# changed. If the mbox is large this can take a long time. Since the change
+# is usually just a newly appended mail, it'd be faster to simply read the
+# new mails. If this setting is enabled, Dovecot does this but still safely
+# fallbacks to re-reading the whole mbox file whenever something in mbox isn't
+# how it's expected to be. The only real downside to this setting is that if
+# some other MUA changes message flags, Dovecot doesn't notice it immediately.
+# Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK 
+# commands.
+#mbox_dirty_syncs = yes
+
+# Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE,
+# EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored.
+#mbox_very_dirty_syncs = no
+
+# Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK
+# commands and when closing the mailbox). This is especially useful for POP3
+# where clients often delete all mails. The downside is that our changes
+# aren't immediately visible to other MUAs.
+#mbox_lazy_writes = yes
+
+# If mbox size is smaller than this (e.g. 100k), don't write index files.
+# If an index file already exists it's still read, just not updated.
+#mbox_min_index_size = 0
+
+# Mail header selection algorithm to use for MD5 POP3 UIDLs when
+# pop3_uidl_format=%m. For backwards compatibility we use apop3d inspired
+# algorithm, but it fails if the first Received: header isn't unique in all
+# mails. An alternative algorithm is "all" that selects all headers.
+#mbox_md5 = apop3d
+
+##
+## mdbox-specific settings
+##
+
+# Maximum dbox file size until it's rotated.
+#mdbox_rotate_size = 2M
+
+# Maximum dbox file age until it's rotated. Typically in days. Day begins
+# from midnight, so 1d = today, 2d = yesterday, etc. 0 = check disabled.
+#mdbox_rotate_interval = 0
+
+# When creating new mdbox files, immediately preallocate their size to
+# mdbox_rotate_size. This setting currently works only in Linux with some
+# filesystems (ext4, xfs).
+#mdbox_preallocate_space = no
+
+##
+## Mail attachments
+##
+
+# sdbox and mdbox support saving mail attachments to external files, which
+# also allows single instance storage for them. Other backends don't support
+# this for now.
+
+# Directory root where to store mail attachments. Disabled, if empty.
+#mail_attachment_dir =
+
+# Attachments smaller than this aren't saved externally. It's also possible to
+# write a plugin to disable saving specific attachments externally.
+#mail_attachment_min_size = 128k
+
+# Filesystem backend to use for saving attachments:
+#  posix : No SiS done by Dovecot (but this might help FS's own deduplication)
+#  sis posix : SiS with immediate byte-by-byte comparison during saving
+#  sis-queue posix : SiS with delayed comparison and deduplication
+#mail_attachment_fs = sis posix
+
+# Hash format to use in attachment filenames. You can add any text and
+# variables: %{md4}, %{md5}, %{sha1}, %{sha256}, %{sha512}, %{size}.
+# Variables can be truncated, e.g. %{sha256:80} returns only first 80 bits
+#mail_attachment_hash = %{sha1}
diff --git a/dovecot/conf.d/10-mail.conf.diff b/dovecot/conf.d/10-mail.conf.diff
new file mode 100644
index 0000000..02589b5
--- /dev/null
+++ b/dovecot/conf.d/10-mail.conf.diff
@@ -0,0 +1,38 @@
+--- 10-mail.conf.orig	2016-03-02 16:15:32.000000000 +0100
++++ 10-mail.conf	2016-03-20 21:18:08.000000000 +0100
+@@ -27,7 +27,7 @@
+ #
+ # <doc/wiki/MailLocation.txt>
+ #
+-mail_location = mbox:~/mail:INBOX=/var/mail/%u
++mail_location = maildir:~/Maildir
+ 
+ # If you need to set multiple mailbox locations or want to change default
+ # namespace settings, you can do it by defining namespace sections.
+@@ -212,7 +212,7 @@
+ 
+ # Space separated list of plugins to load for all services. Plugins specific to
+ # IMAP, LDA, etc. are added to this list in their own .conf files.
+-#mail_plugins = 
++mail_plugins = fts fts_lucene
+ 
+ ##
+ ## Mailbox handling optimizations
+@@ -220,7 +220,7 @@
+ 
+ # Mailbox list indexes can be used to optimize IMAP STATUS commands. They are
+ # also required for IMAP NOTIFY extension to be enabled.
+-#mailbox_list_index = no
++mailbox_list_index = yes
+ 
+ # The minimum number of mails in a mailbox before updates are done to cache
+ # file. This allows optimizing Dovecot's behavior to do less disk writes at
+@@ -265,7 +265,7 @@
+ 
+ # Assume Dovecot is the only MUA accessing Maildir: Scan cur/ directory only
+ # when its mtime changes unexpectedly or when we can't find the mail otherwise.
+-#maildir_very_dirty_syncs = no
++maildir_very_dirty_syncs = yes
+ 
+ # If enabled, Dovecot doesn't use the S=<size> in the Maildir filenames for
+ # getting the mail's physical size, except when recalculating Maildir++ quota.
diff --git a/dovecot/conf.d/10-master.conf b/dovecot/conf.d/10-master.conf
new file mode 100644
index 0000000..aed5df8
--- /dev/null
+++ b/dovecot/conf.d/10-master.conf
@@ -0,0 +1,132 @@
+#default_process_limit = 100
+#default_client_limit = 1000
+
+# Default VSZ (virtual memory size) limit for service processes. This is mainly
+# intended to catch and kill processes that leak memory before they eat up
+# everything.
+#default_vsz_limit = 256M
+
+# Login user is internally used by login processes. This is the most untrusted
+# user in Dovecot system. It shouldn't have access to anything at all.
+#default_login_user = dovenull
+
+# Internal user is used by unprivileged processes. It should be separate from
+# login user, so that login processes can't disturb other processes.
+#default_internal_user = dovecot
+
+service imap-login {
+  inet_listener imap {
+    #port = 143
+  }
+  inet_listener imaps {
+    #port = 993
+    #ssl = yes
+  }
+
+  # 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 = $default_vsz_limit
+}
+
+service pop3-login {
+  inet_listener pop3 {
+    #port = 110
+  }
+  inet_listener pop3s {
+    #port = 995
+    #ssl = yes
+  }
+}
+
+service lmtp {
+  unix_listener lmtp {
+    #mode = 0666
+  }
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+    group = postfix
+    mode = 0600
+    user = postfix
+  }
+
+  # Create inet listener only if you can't use the above UNIX socket
+  #inet_listener lmtp {
+    # Avoid making LMTP visible for the entire internet
+    #address =
+    #port = 
+  #}
+}
+
+service imap {
+  # Most of the memory goes to mmap()ing files. You may need to increase this
+  # limit if you have huge mailboxes.
+  #vsz_limit = $default_vsz_limit
+
+  # Max. number of IMAP processes (connections)
+  #process_limit = 1024
+}
+
+service pop3 {
+  # Max. number of POP3 processes (connections)
+  #process_limit = 1024
+}
+
+service auth {
+  # auth_socket_path points to this userdb socket by default. It's typically
+  # used by dovecot-lda, doveadm, possibly imap process, etc. Users that have
+  # full permissions to this socket are able to get a list of all usernames and
+  # get the results of everyone's userdb lookups.
+  #
+  # The default 0666 mode allows anyone to connect to the socket, but the
+  # userdb lookups will succeed only if the userdb returns an "uid" field that
+  # matches the caller process's UID. Also if caller's uid or gid matches the
+  # socket's uid or gid the lookup succeeds. Anything else causes a failure.
+  #
+  # To give the caller full permissions to lookup all users, set the mode to
+  # something else than 0666 and Dovecot lets the kernel enforce the
+  # permissions (e.g. 0777 allows everyone full permissions).
+  unix_listener auth-userdb {
+    mode = 0660
+    user = dovecot
+    group = mail
+  }
+
+  # Postfix smtp-auth
+  unix_listener /var/spool/postfix/private/auth {
+    mode = 0600
+    user = postfix
+    group = postfix
+  }
+
+#  unix_listener /var/run/ejabberd/auth {
+#    mode = 0660
+#    user = ejabberd
+#    group = ejabberd
+#  }
+
+  # Auth process is run as this user.
+  #user = $default_internal_user
+}
+
+service auth-worker {
+  # Auth worker process is run as root by default, so that it can access
+  # /etc/shadow. If this isn't necessary, the user should be changed to
+  # $default_internal_user.
+  #user = root
+}
+
+service dict {
+  # If dict proxy is used, mail processes should have access to its socket.
+  # For example: mode=0660, group=vmail and global mail_access_groups=vmail
+  unix_listener dict {
+    #mode = 0600
+    #user = 
+    #group = 
+  }
+}
diff --git a/dovecot/conf.d/10-master.conf.diff b/dovecot/conf.d/10-master.conf.diff
new file mode 100644
index 0000000..54614f6
--- /dev/null
+++ b/dovecot/conf.d/10-master.conf.diff
@@ -0,0 +1,44 @@
+--- 10-master.conf.orig	2012-12-17 00:35:40.000000000 +0100
++++ 10-master.conf	2016-10-24 15:36:32.000000000 +0200
+@@ -49,6 +49,11 @@
+   unix_listener lmtp {
+     #mode = 0666
+   }
++  unix_listener /var/spool/postfix/private/dovecot-lmtp {
++    group = postfix
++    mode = 0600
++    user = postfix
++  }
+ 
+   # Create inet listener only if you can't use the above UNIX socket
+   #inet_listener lmtp {
+@@ -87,15 +92,23 @@
+   # something else than 0666 and Dovecot lets the kernel enforce the
+   # permissions (e.g. 0777 allows everyone full permissions).
+   unix_listener auth-userdb {
+-    #mode = 0666
+-    #user = 
+-    #group = 
++    mode = 0660
++    user = dovecot
++    group = mail
+   }
+ 
+   # Postfix smtp-auth
+-  #unix_listener /var/spool/postfix/private/auth {
+-  #  mode = 0666
+-  #}
++  unix_listener /var/spool/postfix/private/auth {
++    mode = 0600
++    user = postfix
++    group = postfix
++  }
++
++#  unix_listener /var/run/ejabberd/auth {
++#    mode = 0660
++#    user = ejabberd
++#    group = ejabberd
++#  }
+ 
+   # Auth process is run as this user.
+   #user = $default_internal_user
diff --git a/dovecot/conf.d/10-ssl.conf b/dovecot/conf.d/10-ssl.conf
new file mode 100644
index 0000000..fade0d3
--- /dev/null
+++ b/dovecot/conf.d/10-ssl.conf
@@ -0,0 +1,59 @@
+##
+## SSL settings
+##
+
+# SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
+ssl = yes
+
+# PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
+# dropping root privileges, so keep the key file unreadable by anyone but
+# root. Included doc/mkcert.sh can be used to easily generate self-signed
+# certificate, just make sure to update the domains in dovecot-openssl.cnf
+ssl_cert = </etc/dovecot/dovecot.pem
+ssl_key = </etc/dovecot/private/dovecot.pem
+
+# If key file is password protected, give the password here. Alternatively
+# give it when starting dovecot with -p parameter. Since this file is often
+# world-readable, you may want to place this setting instead to a different
+# root owned 0600 file by using ssl_key_password = <path.
+#ssl_key_password =
+
+# PEM encoded trusted certificate authority. Set this only if you intend to use
+# ssl_verify_client_cert=yes. The file should contain the CA certificate(s)
+# followed by the matching CRL(s). (e.g. ssl_ca = </etc/ssl/certs/ca.pem)
+#ssl_ca = 
+
+# Require that CRL check succeeds for client certificates.
+#ssl_require_crl = yes
+
+# Directory and/or file for trusted SSL CA certificates. These are used only
+# when Dovecot needs to act as an SSL client (e.g. imapc backend). The
+# directory is usually /etc/ssl/certs in Debian-based systems and the file is
+# /etc/pki/tls/cert.pem in RedHat-based systems.
+#ssl_client_ca_dir =
+#ssl_client_ca_file =
+
+# Request client to send a certificate. If you also want to require it, set
+# auth_ssl_require_client_cert=yes in auth section.
+#ssl_verify_client_cert = no
+
+# Which field from certificate to use for username. commonName and
+# x500UniqueIdentifier are the usual choices. You'll also need to set
+# auth_ssl_username_from_cert=yes.
+#ssl_cert_username_field = commonName
+
+# DH parameters length to use.
+#ssl_dh_parameters_length = 1024
+
+# SSL protocols to use
+ssl_protocols = !SSLv2 !SSLv3
+
+# SSL ciphers to use
+#ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL
+ssl_cipher_list = EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA+RC4:EECDH:EDH+aRSA:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS:!RC4
+
+# Prefer the server's order of ciphers over client's.
+ssl_prefer_server_ciphers = yes
+
+# SSL crypto device to use, for valid values run "openssl engine"
+#ssl_crypto_device =
diff --git a/dovecot/conf.d/10-ssl.conf.diff b/dovecot/conf.d/10-ssl.conf.diff
new file mode 100644
index 0000000..56ee9c3
--- /dev/null
+++ b/dovecot/conf.d/10-ssl.conf.diff
@@ -0,0 +1,37 @@
+--- 10-ssl.conf.orig	2014-12-14 20:20:55.000000000 +0100
++++ 10-ssl.conf	2016-08-27 09:43:42.000000000 +0200
+@@ -3,14 +3,14 @@
+ ##
+ 
+ # SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
+-ssl = no
++ssl = yes
+ 
+ # PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
+ # dropping root privileges, so keep the key file unreadable by anyone but
+ # root. Included doc/mkcert.sh can be used to easily generate self-signed
+ # certificate, just make sure to update the domains in dovecot-openssl.cnf
+-#ssl_cert = </etc/dovecot/dovecot.pem
+-#ssl_key = </etc/dovecot/private/dovecot.pem
++ssl_cert = </etc/dovecot/dovecot.pem
++ssl_key = </etc/dovecot/private/dovecot.pem
+ 
+ # If key file is password protected, give the password here. Alternatively
+ # give it when starting dovecot with -p parameter. Since this file is often
+@@ -46,13 +46,14 @@
+ #ssl_dh_parameters_length = 1024
+ 
+ # SSL protocols to use
+-#ssl_protocols = !SSLv2
++ssl_protocols = !SSLv2 !SSLv3
+ 
+ # SSL ciphers to use
+ #ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL
++ssl_cipher_list = EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA+RC4:EECDH:EDH+aRSA:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS:!RC4
+ 
+ # Prefer the server's order of ciphers over client's.
+-#ssl_prefer_server_ciphers = no
++ssl_prefer_server_ciphers = yes
+ 
+ # SSL crypto device to use, for valid values run "openssl engine"
+ #ssl_crypto_device =
diff --git a/dovecot/conf.d/15-lda.conf b/dovecot/conf.d/15-lda.conf
new file mode 100644
index 0000000..85bd10d
--- /dev/null
+++ b/dovecot/conf.d/15-lda.conf
@@ -0,0 +1,48 @@
+##
+## LDA specific settings (also used by LMTP)
+##
+
+# Address to use when sending rejection mails.
+# Default is postmaster@<your domain>. %d expands to recipient domain.
+postmaster_address = postmaster@jones.dk
+
+# Hostname to use in various parts of sent mails (e.g. in Message-Id) and
+# in LMTP replies. Default is the system's real hostname@domain.
+#hostname = 
+
+# If user is over quota, return with temporary failure instead of
+# bouncing the mail.
+#quota_full_tempfail = no
+
+# Binary to use for sending mails.
+#sendmail_path = /usr/sbin/sendmail
+
+# If non-empty, send mails via this SMTP host[:port] instead of sendmail.
+#submission_host =
+
+# Subject: header to use for rejection mails. You can use the same variables
+# as for rejection_reason below.
+#rejection_subject = Rejected: %s
+
+# Human readable error message for rejection mails. You can use variables:
+#  %n = CRLF, %r = reason, %s = original subject, %t = recipient
+#rejection_reason = Your message to <%t> was automatically rejected:%n%r
+
+# Delimiter character between local-part and detail in email address.
+#recipient_delimiter = +
+
+# Header where the original recipient address (SMTP's RCPT TO: address) is taken
+# from if not available elsewhere. With dovecot-lda -a parameter overrides this. 
+# A commonly used header for this is X-Original-To.
+lda_original_recipient_header = X-Original-To
+
+# Should saving a mail to a nonexistent mailbox automatically create it?
+#lda_mailbox_autocreate = no
+
+# Should automatically created mailboxes be also automatically subscribed?
+#lda_mailbox_autosubscribe = no
+
+protocol lda {
+  # Space separated list of plugins to load (default is global mail_plugins).
+  mail_plugins = $mail_plugins sieve
+}
diff --git a/dovecot/conf.d/15-lda.conf.diff b/dovecot/conf.d/15-lda.conf.diff
new file mode 100644
index 0000000..7bc0bc1
--- /dev/null
+++ b/dovecot/conf.d/15-lda.conf.diff
@@ -0,0 +1,27 @@
+--- 15-lda.conf.orig	2014-07-07 23:26:30.000000000 +0200
++++ 15-lda.conf	2016-10-04 15:42:58.000000000 +0200
+@@ -4,7 +4,7 @@
+ 
+ # Address to use when sending rejection mails.
+ # Default is postmaster@<your domain>. %d expands to recipient domain.
+-#postmaster_address =
++postmaster_address = postmaster@jones.dk
+ 
+ # Hostname to use in various parts of sent mails (e.g. in Message-Id) and
+ # in LMTP replies. Default is the system's real hostname@domain.
+@@ -34,7 +34,7 @@
+ # Header where the original recipient address (SMTP's RCPT TO: address) is taken
+ # from if not available elsewhere. With dovecot-lda -a parameter overrides this. 
+ # A commonly used header for this is X-Original-To.
+-#lda_original_recipient_header =
++lda_original_recipient_header = X-Original-To
+ 
+ # Should saving a mail to a nonexistent mailbox automatically create it?
+ #lda_mailbox_autocreate = no
+@@ -44,5 +44,5 @@
+ 
+ protocol lda {
+   # Space separated list of plugins to load (default is global mail_plugins).
+-  #mail_plugins = $mail_plugins
++  mail_plugins = $mail_plugins sieve
+ }
diff --git a/dovecot/conf.d/15-mailboxes.conf b/dovecot/conf.d/15-mailboxes.conf
new file mode 100644
index 0000000..c5a1ca2
--- /dev/null
+++ b/dovecot/conf.d/15-mailboxes.conf
@@ -0,0 +1,80 @@
+##
+## Mailbox definitions
+##
+
+# Each mailbox is specified in a separate mailbox section. The section name
+# specifies the mailbox name. If it has spaces, you can put the name
+# "in quotes". These sections can contain the following mailbox settings:
+#
+# auto:
+#   Indicates whether the mailbox with this name is automatically created
+#   implicitly when it is first accessed. The user can also be automatically
+#   subscribed to the mailbox after creation. The following values are
+#   defined for this setting:
+# 
+#     no        - Never created automatically.
+#     create    - Automatically created, but no automatic subscription.
+#     subscribe - Automatically created and subscribed.
+#  
+# special_use:
+#   A space-separated list of SPECIAL-USE flags (RFC 6154) to use for the
+#   mailbox. There are no validity checks, so you could specify anything
+#   you want in here, but it's not a good idea to use flags other than the
+#   standard ones specified in the RFC:
+#
+#     \All      - This (virtual) mailbox presents all messages in the
+#                 user's message store. 
+#     \Archive  - This mailbox is used to archive messages.
+#     \Drafts   - This mailbox is used to hold draft messages.
+#     \Flagged  - This (virtual) mailbox presents all messages in the
+#                 user's message store marked with the IMAP \Flagged flag.
+#     \Junk     - This mailbox is where messages deemed to be junk mail
+#                 are held.
+#     \Sent     - This mailbox is used to hold copies of messages that
+#                 have been sent.
+#     \Trash    - This mailbox is used to hold messages that have been
+#                 deleted.
+#
+# comment:
+#   Defines a default comment or note associated with the mailbox. This
+#   value is accessible through the IMAP METADATA mailbox entries
+#   "/shared/comment" and "/private/comment". Users with sufficient
+#   privileges can override the default value for entries with a custom
+#   value.
+
+# NOTE: Assumes "namespace inbox" has been defined in 10-mail.conf.
+namespace inbox {
+  # These mailboxes are widely used and could perhaps be created automatically:
+  mailbox Drafts {
+    special_use = \Drafts
+  }
+  mailbox Junk {
+    auto = subscribe
+    special_use = \Junk
+  }
+  mailbox Trash {
+    auto = subscribe
+    special_use = \Trash
+  }
+
+  # For \Sent mailboxes there are two widely used names. We'll mark both of
+  # them as \Sent. User typically deletes one of them if duplicates are created.
+  mailbox Sent {
+    special_use = \Sent
+  }
+  mailbox "Sent Messages" {
+    special_use = \Sent
+  }
+
+  # If you have a virtual "All messages" mailbox:
+  #mailbox virtual/All {
+  #  special_use = \All
+  #  comment = All my messages
+  #}
+
+  # If you have a virtual "Flagged" mailbox:
+  #mailbox virtual/Flagged {
+  #  special_use = \Flagged
+  #  comment = All my flagged messages
+  #}
+}
diff --git a/dovecot/conf.d/15-mailboxes.conf.diff b/dovecot/conf.d/15-mailboxes.conf.diff
new file mode 100644
index 0000000..0436088
--- /dev/null
+++ b/dovecot/conf.d/15-mailboxes.conf.diff
@@ -0,0 +1,14 @@
+--- 15-mailboxes.conf.orig	2015-12-13 17:48:21.000000000 +0100
++++ 15-mailboxes.conf	2016-10-24 15:37:49.000000000 +0200
+@@ -49,9 +49,11 @@
+     special_use = \Drafts
+   }
+   mailbox Junk {
++    auto = subscribe
+     special_use = \Junk
+   }
+   mailbox Trash {
++    auto = subscribe
+     special_use = \Trash
+   }
+ 
diff --git a/dovecot/conf.d/20-imap.conf b/dovecot/conf.d/20-imap.conf
new file mode 100644
index 0000000..8d9d311
--- /dev/null
+++ b/dovecot/conf.d/20-imap.conf
@@ -0,0 +1,75 @@
+##
+## IMAP specific settings
+##
+
+# If nothing happens for this long while client is IDLEing, move the connection
+# to imap-hibernate process and close the old imap process. This saves memory,
+# because connections use very little memory in imap-hibernate process. The
+# downside is that recreating the imap process back uses some resources.
+#imap_hibernate_timeout = 0
+
+# 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
+
+# IMAP logout format string:
+#  %i - total number of bytes read from client
+#  %o - total number of bytes sent to client
+#  %{fetch_hdr_count} - Number of mails with mail header data sent to client
+#  %{fetch_hdr_bytes} - Number of bytes with mail header data sent to client
+#  %{fetch_body_count} - Number of mails with mail body data sent to client
+#  %{fetch_body_bytes} - Number of bytes with mail body data sent to client
+#  %{deleted} - Number of mails where client added \Deleted flag
+#  %{expunged} - Number of mails that client expunged
+#  %{trashed} - Number of mails that client copied/moved to the
+#               special_use=\Trash mailbox.
+#imap_logout_format = in=%i out=%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 = 29 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 = 
+
+# Host allowed in URLAUTH URLs sent by client. "*" allows all.
+#imap_urlauth_host =
+
+protocol imap {
+  # Space separated list of plugins to load (default is global mail_plugins).
+  mail_plugins = $mail_plugins imap_zlib
+
+  # 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
+}
diff --git a/dovecot/conf.d/20-imap.conf.diff b/dovecot/conf.d/20-imap.conf.diff
new file mode 100644
index 0000000..1870ed7
--- /dev/null
+++ b/dovecot/conf.d/20-imap.conf.diff
@@ -0,0 +1,20 @@
+--- 20-imap.conf.orig	2015-12-13 17:48:21.000000000 +0100
++++ 20-imap.conf	2016-10-04 15:43:31.000000000 +0200
+@@ -32,7 +32,7 @@
+ 
+ # How long to wait between "OK Still here" notifications when client is
+ # IDLEing.
+-#imap_idle_notify_interval = 2 mins
++imap_idle_notify_interval = 29 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
+@@ -67,7 +67,7 @@
+ 
+ protocol imap {
+   # Space separated list of plugins to load (default is global mail_plugins).
+-  #mail_plugins = $mail_plugins
++  mail_plugins = $mail_plugins imap_zlib
+ 
+   # Maximum number of IMAP connections allowed for a user from each IP address.
+   # NOTE: The username is compared case-sensitively.
diff --git a/dovecot/conf.d/20-lmtp.conf b/dovecot/conf.d/20-lmtp.conf
new file mode 100644
index 0000000..82a6496
--- /dev/null
+++ b/dovecot/conf.d/20-lmtp.conf
@@ -0,0 +1,28 @@
+##
+## LMTP specific settings
+##
+
+# Support proxying to other LMTP/SMTP servers by performing passdb lookups.
+#lmtp_proxy = no
+
+# When recipient address includes the detail (e.g. user+detail), try to save
+# the mail to the detail mailbox. See also recipient_delimiter and
+# lda_mailbox_autocreate settings.
+#lmtp_save_to_detail_mailbox = no
+
+# Verify quota before replying to RCPT TO. This adds a small overhead.
+#lmtp_rcpt_check_quota = no
+
+# Which recipient address to use for Delivered-To: header and Received:
+# header. The default is "final", which is the same as the one given to
+# RCPT TO command. "original" uses the address given in RCPT TO's ORCPT
+# parameter, "none" uses nothing. Note that "none" is currently always used
+# when a mail has multiple recipients.
+#lmtp_hdr_delivery_address = final
+
+protocol lmtp {
+  # Space separated list of plugins to load (default is global mail_plugins).
+  #mail_plugins = $mail_plugins sieve
+
+  postmaster_address = postmaster@jones.dk
+}
diff --git a/dovecot/conf.d/20-lmtp.conf.diff b/dovecot/conf.d/20-lmtp.conf.diff
new file mode 100644
index 0000000..a7bacc8
--- /dev/null
+++ b/dovecot/conf.d/20-lmtp.conf.diff
@@ -0,0 +1,11 @@
+--- 20-lmtp.conf.orig	2016-07-05 01:15:31.000000000 +0200
++++ 20-lmtp.conf	2016-10-24 21:06:28.000000000 +0200
+@@ -22,5 +22,7 @@
+ 
+ protocol lmtp {
+   # Space separated list of plugins to load (default is global mail_plugins).
+-  #mail_plugins = $mail_plugins
++  #mail_plugins = $mail_plugins sieve
++
++  postmaster_address = postmaster@jones.dk
+ }
diff --git a/dovecot/conf.d/90-plugin.conf b/dovecot/conf.d/90-plugin.conf
new file mode 100644
index 0000000..0e7d219
--- /dev/null
+++ b/dovecot/conf.d/90-plugin.conf
@@ -0,0 +1,14 @@
+##
+## Plugin settings
+##
+
+# All wanted plugins must be listed in mail_plugins setting before any of the
+# settings take effect. See <doc/wiki/Plugins.txt> for list of plugins and
+# their configuration. Note that %variable expansion is done for all values.
+
+plugin {
+  #setting_name = value
+  fts = lucene
+  fts_lucene = whitespace_chars=@. default_language=danish
+  fts_autoindex=yes
+}
diff --git a/dovecot/conf.d/90-plugin.conf.diff b/dovecot/conf.d/90-plugin.conf.diff
new file mode 100644
index 0000000..24bc683
--- /dev/null
+++ b/dovecot/conf.d/90-plugin.conf.diff
@@ -0,0 +1,10 @@
+--- 90-plugin.conf.orig	2012-12-17 00:35:40.000000000 +0100
++++ 90-plugin.conf	2016-03-20 21:34:05.000000000 +0100
+@@ -8,4 +8,7 @@
+ 
+ plugin {
+   #setting_name = value
++  fts = lucene
++  fts_lucene = whitespace_chars=@. default_language=danish
++  fts_autoindex=yes
+ }
diff --git a/dovecot/conf.d/90-sieve.conf b/dovecot/conf.d/90-sieve.conf
new file mode 100644
index 0000000..8c2144b
--- /dev/null
+++ b/dovecot/conf.d/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
+
+  # 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 =
+
+  # 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...)
+  sieve_after = /etc/dovecot/sieve-after/
+
+  # 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
+  sieve_extensions = +spamtest +spamtestplus
+
+  sieve_spamtest_status_type = score
+  sieve_spamtest_status_header = X-Spam-Score:.* score=(-?[[:digit:]]+\.[[:digit:]]).*
+  sieve_spamtest_max_header = X-Spam-Score:.* score=-?[[:digit:]]+\.[[:digit:]] required=([[:digit:]]+\.[[:digit:]])
+
+  # 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 =
+
+  # 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 =
+
+  # The separator that is expected between the :user and :detail
+  # address parts introduced by the subaddress extension. This may
+  # also be a sequence of characters (e.g. '--'). The current
+  # implementation looks for the separator from the left of the
+  # localpart and uses the first one encountered. The :user part is
+  # left of the separator and the :detail part is right. This setting
+  # is also used by Dovecot's LMTP service.
+  #recipient_delimiter = +
+
+  # 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 
+}
diff --git a/dovecot/conf.d/90-sieve.conf.diff b/dovecot/conf.d/90-sieve.conf.diff
new file mode 100644
index 0000000..f2fd803
--- /dev/null
+++ b/dovecot/conf.d/90-sieve.conf.diff
@@ -0,0 +1,22 @@
+--- 90-sieve.conf.orig	2016-08-25 15:52:02.000000000 +0200
++++ 90-sieve.conf	2016-10-24 22:28:41.000000000 +0200
+@@ -74,6 +74,7 @@
+   #sieve_after =
+   #sieve_after2 =
+   #sieve_after2 = (etc...)
++  sieve_after = /etc/dovecot/sieve-after/
+ 
+   # Which Sieve language extensions are available to users. By default, all
+   # supported extensions are available, except for deprecated extensions or
+@@ -84,6 +85,11 @@
+   # deprecated imapflags extension in addition to all extensions were already
+   # enabled by default.
+   #sieve_extensions = +notify +imapflags
++  sieve_extensions = +spamtest +spamtestplus
++
++  sieve_spamtest_status_type = score
++  sieve_spamtest_status_header = X-Spam-Score:.* score=(-?[[:digit:]]+\.[[:digit:]]).*
++  sieve_spamtest_max_header = X-Spam-Score:.* score=-?[[:digit:]]+\.[[:digit:]] required=([[:digit:]]+\.[[:digit:]])
+ 
+   # Which Sieve language extensions are ONLY available in global scripts. This
+   # can be used to restrict the use of certain Sieve extensions to administrator
diff --git a/dovecot/init.sh b/dovecot/init.sh
new file mode 100755
index 0000000..c777514
--- /dev/null
+++ b/dovecot/init.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+sievec /etc/dovecot/sieve-after/
diff --git a/dovecot/sieve-after/spam-to-folder.sieve b/dovecot/sieve-after/spam-to-folder.sieve
new file mode 100644
index 0000000..dc22eee
--- /dev/null
+++ b/dovecot/sieve-after/spam-to-folder.sieve
@@ -0,0 +1,10 @@
+require "spamtestplus";
+require "fileinto";
+require "relational";
+require "comparator-i;ascii-numeric";
+
+if spamtest :value "gt" :comparator "i;ascii-numeric" :percent "85" {
+	fileinto "Trash";
+} elsif spamtest :value "ge" :comparator "i;ascii-numeric" "3" {
+	fileinto "Junk";
+}