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authorGuilhem Moulin <guilhem@fripost.org>2013-12-02 20:18:28 +0100
committerGuilhem Moulin <guilhem@fripost.org>2015-06-07 02:51:08 +0200
commit7d1622f3e5db18b40cab6cecfd3c2f1fab20d782 (patch)
treec5753fb80444467fe2fcb205e4d03595ff1412de /roles
parentf2dc55cd77aae4e6e9c4258a64547a16a90ea579 (diff)
Configure the IMAP server.
(For now, only LMTP and IMAP processes, without replication.)
Diffstat (limited to 'roles')
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/10-auth.conf127
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/10-logging.conf83
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf370
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/10-master.conf129
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/10-ssl.conf50
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/15-mailboxes.conf45
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/20-lmtp.conf17
-rw-r--r--roles/IMAP/files/etc/dovecot/conf.d/auth-ldap.conf.ext37
-rw-r--r--roles/IMAP/files/etc/dovecot/dovecot-ldap.conf.ext140
-rw-r--r--roles/IMAP/handlers/main.yml3
-rw-r--r--roles/IMAP/tasks/imap.yml49
-rw-r--r--roles/IMAP/tasks/main.yml2
-rw-r--r--roles/common/templates/etc/fail2ban/jail.local.j210
-rw-r--r--roles/common/templates/etc/iptables/services.j23
14 files changed, 1065 insertions, 0 deletions
diff --git a/roles/IMAP/files/etc/dovecot/conf.d/10-auth.conf b/roles/IMAP/files/etc/dovecot/conf.d/10-auth.conf
new file mode 100644
index 0000000..8b8445b
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/10-auth.conf
@@ -0,0 +1,127 @@
+##
+## 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.
+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
diff --git a/roles/IMAP/files/etc/dovecot/conf.d/10-logging.conf b/roles/IMAP/files/etc/dovecot/conf.d/10-logging.conf
new file mode 100644
index 0000000..ba8e646
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/10-logging.conf
@@ -0,0 +1,83 @@
+##
+## 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.
+#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. %$ contains login_log_format_elements string, %s contains
+# the data we want to log.
+#login_log_format = %$: %s
+
+# Log prefix for mail processes. See doc/wiki/Variables.txt for list of
+# possible variables you can use.
+#mail_log_prefix = "%s(%u): "
+
+# Format to use for logging mail deliveries. You can use variables:
+# %$ - 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/files/etc/dovecot/conf.d/10-mail.conf b/roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf
new file mode 100644
index 0000000..48e2c46
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf
@@ -0,0 +1,370 @@
+##
+## 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 = mdbox:/home/mail/mailboxes/%d/%n
+
+# 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
+}
+
+namespace virtual {
+ prefix = virtual/
+ separator = /
+ location = virtual:/home/mail/virtual/%d/%n
+ list = no
+ hidden = yes
+}
+
+# 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 = yes
+
+# 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 = vmail
+mail_gid = vmail
+
+# 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
+
+##
+## 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
+
+# Mail storage exists in NFS. Set this to yes to make Dovecot flush NFS caches
+# whenever needed. If you're using only a single mail server this isn't needed.
+#mail_nfs_storage = no
+# Mail index files also exist in NFS. Setting this to yes requires
+# mmap_disable=yes and fsync_disable=no.
+#mail_nfs_index = no
+
+# 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 = virtual
+
+##
+## Mailbox handling optimizations
+##
+
+# 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 dnotify, 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
+
+##
+## 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.
+#mbox_read_locks = fcntl
+#mbox_write_locks = dotlock fcntl
+
+# 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.
+
+# WARNING: This feature hasn't been tested much yet. Use at your own risk.
+
+# 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/files/etc/dovecot/conf.d/10-master.conf b/roles/IMAP/files/etc/dovecot/conf.d/10-master.conf
new file mode 100644
index 0000000..51ed7c6
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/10-master.conf
@@ -0,0 +1,129 @@
+#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 = 172.16.0.1
+ 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_count = 1
+}
+
+service lmtp {
+ user = vmail
+ process_min_avail = 3
+
+ unix_listener /var/spool/postfix-mda/private/dovecot-lmtpd {
+ group = postfix
+ user = postfix
+ mode = 0600
+ }
+
+ # 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 = 0600
+ user = vmail
+ group = root
+ }
+
+ # Postfix smtp-auth
+ unix_listener /var/spool/postfix-msa/private/dovecot-auth {
+ group = postfix
+ user = postfix
+ mode = 0600
+ }
+
+ # 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
+}
+
+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/roles/IMAP/files/etc/dovecot/conf.d/10-ssl.conf b/roles/IMAP/files/etc/dovecot/conf.d/10-ssl.conf
new file mode 100644
index 0000000..a733e94
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/10-ssl.conf
@@ -0,0 +1,50 @@
+##
+## SSL settings
+##
+
+# SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
+ssl = required
+
+# 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
+
+# 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
+
+# How often to regenerate the SSL parameters file. Generation is quite CPU
+# intensive operation. The value is in hours, 0 disables regeneration
+# entirely.
+#ssl_parameters_regenerate = 168
+
+# SSL protocols to use
+ssl_protocols = !SSLv2
+
+# SSL ciphers to use
+ssl_cipher_list = HIGH:!SSLv2:!aNULL:!eNULL:!3DES:!MD5:@STRENGTH
+
+# SSL crypto device to use, for valid values run "openssl engine"
+#ssl_crypto_device =
diff --git a/roles/IMAP/files/etc/dovecot/conf.d/15-mailboxes.conf b/roles/IMAP/files/etc/dovecot/conf.d/15-mailboxes.conf
new file mode 100644
index 0000000..e110f28
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/15-mailboxes.conf
@@ -0,0 +1,45 @@
+##
+## Mailbox definitions
+##
+
+# NOTE: Assumes "namespace inbox" has been defined in 10-mail.conf.
+namespace inbox {
+
+ #mailbox name {
+ # auto=create will automatically create this mailbox.
+ # auto=subscribe will both create and subscribe to the mailbox.
+ #auto = no
+
+ # Space separated list of IMAP SPECIAL-USE attributes as specified by
+ # RFC 6154: \All \Archive \Drafts \Flagged \Junk \Sent \Trash
+ #special_use =
+ #}
+
+ # These mailboxes are widely used and could perhaps be created automatically:
+ mailbox TRASH {
+ auto = create
+ special_use = \Trash
+ }
+ mailbox DRAFTS {
+ auto = create
+ special_use = \Drafts
+ }
+ mailbox SENT {
+ auto = subscribe
+ special_use = \Sent
+ }
+ mailbox SPAM {
+ auto = create
+ special_use = \Junk
+ }
+
+ # If you have a virtual "All messages" mailbox:
+ mailbox virtual/All {
+ special_use = \All
+ }
+
+ # If you have a virtual "Flagged" mailbox:
+ mailbox virtual/Flagged {
+ special_use = \Flagged
+ }
+}
diff --git a/roles/IMAP/files/etc/dovecot/conf.d/20-lmtp.conf b/roles/IMAP/files/etc/dovecot/conf.d/20-lmtp.conf
new file mode 100644
index 0000000..b0be573
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/20-lmtp.conf
@@ -0,0 +1,17 @@
+##
+## 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
+
+protocol lmtp {
+ postmaster_address = postmaster@fripost.org
+ # Space separated list of plugins to load (default is global mail_plugins).
+ mail_plugins = $mail_plugins sieve
+}
diff --git a/roles/IMAP/files/etc/dovecot/conf.d/auth-ldap.conf.ext b/roles/IMAP/files/etc/dovecot/conf.d/auth-ldap.conf.ext
new file mode 100644
index 0000000..542353b
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/conf.d/auth-ldap.conf.ext
@@ -0,0 +1,37 @@
+# Authentication for LDAP users. Included from auth.conf.
+#
+# <doc/wiki/AuthDatabase.LDAP.txt>
+
+passdb {
+ driver = ldap
+
+ # Path for LDAP configuration file, see example-config/dovecot-ldap.conf.ext
+ args = /etc/dovecot/dovecot-ldap.conf.ext
+}
+
+# "prefetch" user database means that the passdb already provided the
+# needed information and there's no need to do a separate userdb lookup.
+# <doc/wiki/UserDatabase.Prefetch.txt>
+#userdb {
+# driver = prefetch
+#}
+
+#userdb {
+# driver = ldap
+# # This should be a different file from the passdb's, in order to perform
+# # asynchronous requests.
+# args = /etc/dovecot/dovecot-ldap-userdb.conf.ext
+#
+# # Default fields can be used to specify defaults that LDAP may override
+# #default_fields = home=/home/virtual/%u
+#}
+
+# If you don't have any user-specific settings, you can avoid the userdb LDAP
+# lookup by using userdb static instead of userdb ldap, for example:
+# <doc/wiki/UserDatabase.Static.txt>
+userdb {
+ driver = static
+ # The MTA has already verified the existence of users when doing alias resolution,
+ # so we can skip the passdb lookup here.
+ args = home=/home/mail/mailboxes/%d/%n allow_all_users=yes
+}
diff --git a/roles/IMAP/files/etc/dovecot/dovecot-ldap.conf.ext b/roles/IMAP/files/etc/dovecot/dovecot-ldap.conf.ext
new file mode 100644
index 0000000..1c504d3
--- /dev/null
+++ b/roles/IMAP/files/etc/dovecot/dovecot-ldap.conf.ext
@@ -0,0 +1,140 @@
+# This file is opened as root, so it should be owned by root and mode 0600.
+#
+# http://wiki2.dovecot.org/AuthDatabase/LDAP
+#
+# NOTE: If you're not using authentication binds, you'll need to give
+# dovecot-auth read access to userPassword field in the LDAP server.
+# With OpenLDAP this is done by modifying /etc/ldap/slapd.conf. There should
+# already be something like this:
+
+# access to attribute=userPassword
+# by dn="<dovecot's dn>" read # add this
+# by anonymous auth
+# by self write
+# by * none
+
+# Space separated list of LDAP hosts to use. host:port is allowed too.
+hosts = localhost
+
+# LDAP URIs to use. You can use this instead of hosts list. Note that this
+# setting isn't supported by all LDAP libraries.
+uris = ldapi://
+
+# Distinguished Name - the username used to login to the LDAP server.
+# Leave it commented out to bind anonymously (useful with auth_bind=yes).
+#dn =
+
+# Password for LDAP server, if dn is specified.
+#dnpass =
+
+# Use SASL binding instead of the simple binding. Note that this changes
+# ldap_version automatically to be 3 if it's lower. Also note that SASL binds
+# and auth_bind=yes don't work together.
+#sasl_bind = no
+# SASL mechanism name to use.
+#sasl_mech =
+# SASL realm to use.
+#sasl_realm =
+# SASL authorization ID, ie. the dnpass is for this "master user", but the
+# dn is still the logged in user. Normally you want to keep this empty.
+#sasl_authz_id =
+
+# Use TLS to connect to the LDAP server.
+#tls = no
+# TLS options, currently supported only with OpenLDAP:
+#tls_ca_cert_file =
+#tls_ca_cert_dir =
+#tls_cipher_suite =
+# TLS cert/key is used only if LDAP server requires a client certificate.
+#tls_cert_file =
+#tls_key_file =
+# Valid values: never, hard, demand, allow, try
+#tls_require_cert =
+
+# Use the given ldaprc path.
+#ldaprc_path =
+
+# LDAP library debug level as specified by LDAP_DEBUG_* in ldap_log.h.
+# -1 = everything. You may need to recompile OpenLDAP with debugging enabled
+# to get enough output.
+#debug_level = 0
+
+# Use authentication binding for verifying password's validity. This works by
+# logging into LDAP server using the username and password given by client.
+# The pass_filter is used to find the DN for the user. Note that the pass_attrs
+# is still used, only the password field is ignored in it. Before doing any
+# search, the binding is switched back to the default DN.
+auth_bind = yes
+
+# If authentication binding is used, you can save one LDAP request per login
+# if users' DN can be specified with a common template. The template can use
+# the standard %variables (see user_filter). Note that you can't
+# use any pass_attrs if you use this setting.
+#
+# If you use this setting, it's a good idea to use a different
+# dovecot-ldap.conf.ext for userdb (it can even be a symlink, just as long as
+# the filename is different in userdb's args). That way one connection is used
+# only for LDAP binds and another connection is used for user lookups.
+# Otherwise the binding is changed to the default DN before each user lookup.
+#
+# For example:
+# auth_bind_userdn = cn=%u,ou=people,o=org
+#
+auth_bind_userdn = fvl=%n,fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+
+# LDAP protocol version to use. Likely 2 or 3.
+ldap_version = 3
+
+# LDAP base. %variables can be used here.
+# For example: dc=mail, dc=example, dc=org
+base = fvl=%n,fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+
+# Dereference: never, searching, finding, always
+deref = never
+
+# Search scope: base, onelevel, subtree
+scope = base
+
+# User attributes are given in LDAP-name=dovecot-internal-name list. The
+# internal names are:
+# uid - System UID
+# gid - System GID
+# home - Home directory
+# mail - Mail location
+#
+# There are also other special fields which can be returned, see
+# http://wiki2.dovecot.org/UserDatabase/ExtraFields
+user_attrs =
+
+# Filter for user lookup. Some variables can be used (see
+# http://wiki2.dovecot.org/Variables for full list):
+# %u - username
+# %n - user part in user@domain, same as %u if there's no domain
+# %d - domain part in user@domain, empty if user there's no domain
+user_filter =
+
+# Password checking attributes:
+# user: Virtual user name (user@domain), if you wish to change the
+# user-given username to something else
+# password: Password, may optionally start with {type}, eg. {crypt}
+# There are also other special fields which can be returned, see
+# http://wiki2.dovecot.org/PasswordDatabase/ExtraFields
+pass_attrs = fvl=user
+
+# If you wish to avoid two LDAP lookups (passdb + userdb), you can use
+# userdb prefetch instead of userdb ldap in dovecot.conf. In that case you'll
+# also have to include user_attrs in pass_attrs field prefixed with "userdb_"
+# string. For example:
+#pass_attrs = uid=user,userPassword=password,\
+# homeDirectory=userdb_home,uidNumber=userdb_uid,gidNumber=userdb_gid
+
+# Filter for password lookups
+pass_filter = (&(objectClass=FripostVirtualUser)(fvl=%n)(isActive=TRUE))
+
+# Attributes and filter to get a list of all users
+#iterate_attrs = uid=user
+#iterate_filter = (objectClass=posixAccount)
+
+# Default password scheme. "{scheme}" before password overrides this.
+# List of supported schemes is in: http://wiki2.dovecot.org/Authentication
+#default_pass_scheme = CRYPT
diff --git a/roles/IMAP/handlers/main.yml b/roles/IMAP/handlers/main.yml
new file mode 100644
index 0000000..45f817d
--- /dev/null
+++ b/roles/IMAP/handlers/main.yml
@@ -0,0 +1,3 @@
+---
+- name: Restart Dovecot
+ service: name=dovecot state=restarted
diff --git a/roles/IMAP/tasks/imap.yml b/roles/IMAP/tasks/imap.yml
new file mode 100644
index 0000000..554bc67
--- /dev/null
+++ b/roles/IMAP/tasks/imap.yml
@@ -0,0 +1,49 @@
+- name: Install Dovecot
+ apt: pkg={{ item }}
+ with_items:
+ - dovecot-core
+ - dovecot-ldap
+ - dovecot-imapd
+ - dovecot-lmtpd
+
+- name: Create a user 'vmail'
+ user: name=vmail system=yes
+ home=/home/mail
+ shell=/bin/false
+ password=!
+ state=present
+
+- name: Create directories for user 'vmail'
+ file: path=/home/mail{{ item }}
+ owner=vmail group=vmail
+ state=directory
+ mode=0700
+ with_items:
+ - /
+ - /mailboxes
+ - /sieve
+
+- name: Configure Dovecot
+ copy: src=etc/dovecot/{{ item }}
+ dest=/etc/dovecot/{{ item }}
+ owner=root group=root
+ mode=0644
+ register: r
+ with_items:
+ - conf.d/10-auth.conf
+ - conf.d/10-logging.conf
+ - conf.d/10-mail.conf
+ - conf.d/10-master.conf
+ - conf.d/10-ssl.conf
+ - conf.d/15-mailboxes.conf
+ - conf.d/20-lmtp.conf
+ - conf.d/auth-ldap.conf.ext
+ - dovecot-ldap.conf.ext
+ notify:
+ - Restart Dovecot
+
+- name: Start Dovecot
+ service: name=dovecot state=started
+ when: not r.changed
+
+- meta: flush_handlers
diff --git a/roles/IMAP/tasks/main.yml b/roles/IMAP/tasks/main.yml
new file mode 100644
index 0000000..d71573e
--- /dev/null
+++ b/roles/IMAP/tasks/main.yml
@@ -0,0 +1,2 @@
+---
+- include: imap.yml tags=imap,dovecot
diff --git a/roles/common/templates/etc/fail2ban/jail.local.j2 b/roles/common/templates/etc/fail2ban/jail.local.j2
index b92cb7a..96f2d6b 100644
--- a/roles/common/templates/etc/fail2ban/jail.local.j2
+++ b/roles/common/templates/etc/fail2ban/jail.local.j2
@@ -61,3 +61,13 @@ filter = postfix
logpath = /var/log/mail.log
maxretry = 10
{% endif %}
+
+
+{% if 'IMAP' in group_names %}
+[dovecot]
+
+enabled = true
+port = imap2,imap3,imaps,pop3,pop3s
+filter = dovecot
+logpath = /var/log/mail.log
+{% endif %}
diff --git a/roles/common/templates/etc/iptables/services.j2 b/roles/common/templates/etc/iptables/services.j2
index 8a9409d..cd7a8bd 100644
--- a/roles/common/templates/etc/iptables/services.j2
+++ b/roles/common/templates/etc/iptables/services.j2
@@ -15,3 +15,6 @@ in tcp {{ ansible_ssh_port|default('22') }} # SSH
{% if 'MX' in group_names %}
in tcp 25 # SMTP
{% endif %}
+{% if 'IMAP' in group_names %}
+in tcp 993 # IMAPS
+{% endif %}