Remove the IMAP caching proxy.

Dovecot imapc requires two authentication rounds to the IMAP backend for
each connection.  It seems suboptimal that Roundcube keeps connecting to
the IMAP server for each new connection, but benchmarks shows little
advantage in caching the IMAP sessions with imapproxy:

  http://www.dovecot.org/list/dovecot/2012-February/133544.html

5 files changed, 0 insertions, 755 deletions

diff --git a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-auth.conf b/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-auth.conf
deleted file mode 100644
index ec8704f..0000000
--- a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-auth.conf
+++ /dev/null
@@ -1,129 +0,0 @@
-##
-## 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 = fripost.org
-
-# 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 = %Lu
-
-# 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
-
-##
-## 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
-!include auth-imap.conf.ext
diff --git a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-logging.conf b/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-logging.conf
deleted file mode 100644
index 848fe69..0000000
--- a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-logging.conf
+++ /dev/null
@@ -1,85 +0,0 @@
-##
-## Log destination.
-##
-
-# Log file to use for error messages. "syslog" logs to syslog,
-# /dev/stderr logs to stderr.
-#log_path = syslog
-
-# Log file to use for informational messages. Defaults to log_path.
-#info_log_path =
-# Log file to use for debug messages. Defaults to info_log_path.
-#debug_log_path =
-
-# Syslog facility to use if you're logging to syslog. Usually if you don't
-# want to use "mail", you'll use local0..local7. Also other standard
-# facilities are supported.
-#syslog_facility = mail
-
-##
-## Logging verbosity and debugging.
-##
-
-# Log unsuccessful authentication attempts and the reasons why they failed.
-#auth_verbose = no
-
-# In case of password mismatches, log the attempted password. Valid values are
-# no, plain and sha1. sha1 can be useful for detecting brute force password
-# attempts vs. user simply trying the same password over and over again.
-# You can also truncate the value to n chars by appending ":n" (e.g. sha1:6).
-#auth_verbose_passwords = no
-
-# Even more verbose logging for debugging purposes. Shows for example SQL
-# queries.
-#auth_debug = no
-
-# In case of password mismatches, log the passwords and used scheme so the
-# problem can be debugged. Enabling this also enables auth_debug.
-#auth_debug_passwords = no
-
-# Enable mail process debugging. This can help you figure out why Dovecot
-# isn't finding your mails.
-#mail_debug = no
-
-# Show protocol level SSL errors.
-#verbose_ssl = no
-
-# mail_log plugin provides more event logging for mail processes.
-plugin {
-  # Events to log. Also available: flag_change append
-  #mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
-  # Available fields: uid, box, msgid, from, subject, size, vsize, flags
-  # size and vsize are available only for expunge and copy events.
-  #mail_log_fields = uid box msgid size
-}
-
-##
-## Log formatting.
-##
-
-# Prefix for each line written to log file. % codes are in strftime(3)
-# format.
-log_timestamp = "%Y-%m-%d %H:%M:%S "
-
-# Space-separated list of elements we want to log. The elements which have
-# a non-empty variable value are joined together to form a comma-separated
-# string.
-#login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c
-
-# Login log format. %s contains login_log_format_elements string, %$ contains
-# the data we want to log.
-#login_log_format = %$: %s
-
-# Log prefix for mail processes. See doc/wiki/Variables.txt for list of
-# possible variables you can use.
-#mail_log_prefix = "%s(%u): "
-
-# Format to use for logging mail deliveries. See doc/wiki/Variables.txt for
-# list of all variables you can use. Some of the common ones include:
-#  %$ - Delivery status message (e.g. "saved to INBOX")
-#  %m - Message-ID
-#  %s - Subject
-#  %f - From address
-#  %p - Physical size
-#  %w - Virtual size
-#deliver_log_format = msgid=%m: %$
diff --git a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-mail.conf b/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-mail.conf
deleted file mode 100644
index 2264719..0000000
--- a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-mail.conf
+++ /dev/null
@@ -1,385 +0,0 @@
-##
-## 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 = imapc:~/imapc
-
-# 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 = imapproxy
-mail_gid = imapproxy
-
-# 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 = 1
-#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 =
-
-##
-## 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 = no
-
-# 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/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-master.conf b/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-master.conf
deleted file mode 100644
index 76c7ed0..0000000
--- a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-master.conf
+++ /dev/null
@@ -1,80 +0,0 @@
-#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 {
-    address = 127.0.0.1
-    port = 143
-    ssl = no
-  }
-  inet_listener imaps {
-    port = 0
-  }
-
-  # 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
-
-  # Max. number of IMAP processes (logins)
-  process_limit = 256
-
-  # Number of processes to always keep waiting for more connections.
-  process_min_avail = 4
-
-  # If you set service_count=0, you probably need to grow this.
-  #vsz_limit = $default_vsz_limit
-}
-
-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 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 = 0666
-    #user =
-    #group =
-  }
-
-  # 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 = $default_internal_user
-}
diff --git a/roles/IMAP-proxy/files/etc/dovecot/conf.d/15-mailboxes.conf b/roles/IMAP-proxy/files/etc/dovecot/conf.d/15-mailboxes.conf
deleted file mode 100644
index 8366e95..0000000
--- a/roles/IMAP-proxy/files/etc/dovecot/conf.d/15-mailboxes.conf
+++ /dev/null
@@ -1,76 +0,0 @@
-##
-## 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 {
-    auto = create
-    special_use = \Drafts
-  }
-  mailbox Junk {
-    auto = create
-    special_use = \Junk
-  }
-  mailbox Trash {
-    auto = create
-    special_use = \Trash
-  }
-  mailbox Sent {
-    auto = subscribe
-    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
-  }
-}