From eb442e8bc9e0345295c9cb0869d4af14983ef662 Mon Sep 17 00:00:00 2001 From: Jakub Czajka Date: Sun, 9 Oct 2022 15:02:48 +0200 Subject: [PATCH] [dovecot] Generate default configuration. --- dovecot/10-auth.conf | 127 +++++++++ dovecot/10-director.conf | 60 ++++ dovecot/10-logging.conf | 109 +++++++ dovecot/10-mail.conf | 421 ++++++++++++++++++++++++++++ dovecot/10-master.conf | 130 +++++++++ dovecot/10-ssl.conf | 80 ++++++ dovecot/10-tcpwrapper.conf | 14 + dovecot/15-lda.conf | 48 ++++ dovecot/15-mailboxes.conf | 86 ++++++ dovecot/20-imap.conf | 99 +++++++ dovecot/20-lmtp.conf | 40 +++ dovecot/90-acl.conf | 19 ++ dovecot/90-plugin.conf | 11 + dovecot/90-quota.conf | 83 ++++++ dovecot/README | 52 ++++ dovecot/auth-checkpassword.conf.ext | 21 ++ dovecot/auth-deny.conf.ext | 15 + dovecot/auth-dict.conf.ext | 16 ++ dovecot/auth-master.conf.ext | 16 ++ dovecot/auth-passwdfile.conf.ext | 20 ++ dovecot/auth-sql.conf.ext | 30 ++ dovecot/auth-static.conf.ext | 24 ++ dovecot/auth-system.conf.ext | 74 +++++ dovecot/dovecot-dict-auth.conf.ext | 54 ++++ dovecot/dovecot-dict-sql.conf.ext | 41 +++ dovecot/dovecot-sql.conf.ext | 144 ++++++++++ dovecot/dovecot.conf | 102 +++++++ 27 files changed, 1936 insertions(+) create mode 100644 dovecot/10-auth.conf create mode 100644 dovecot/10-director.conf create mode 100644 dovecot/10-logging.conf create mode 100644 dovecot/10-mail.conf create mode 100644 dovecot/10-master.conf create mode 100644 dovecot/10-ssl.conf create mode 100644 dovecot/10-tcpwrapper.conf create mode 100644 dovecot/15-lda.conf create mode 100644 dovecot/15-mailboxes.conf create mode 100644 dovecot/20-imap.conf create mode 100644 dovecot/20-lmtp.conf create mode 100644 dovecot/90-acl.conf create mode 100644 dovecot/90-plugin.conf create mode 100644 dovecot/90-quota.conf create mode 100644 dovecot/README create mode 100644 dovecot/auth-checkpassword.conf.ext create mode 100644 dovecot/auth-deny.conf.ext create mode 100644 dovecot/auth-dict.conf.ext create mode 100644 dovecot/auth-master.conf.ext create mode 100644 dovecot/auth-passwdfile.conf.ext create mode 100644 dovecot/auth-sql.conf.ext create mode 100644 dovecot/auth-static.conf.ext create mode 100644 dovecot/auth-system.conf.ext create mode 100644 dovecot/dovecot-dict-auth.conf.ext create mode 100644 dovecot/dovecot-dict-sql.conf.ext create mode 100644 dovecot/dovecot-sql.conf.ext create mode 100644 dovecot/dovecot.conf diff --git a/dovecot/10-auth.conf b/dovecot/10-auth.conf new file mode 100644 index 0000000..978e8ae --- /dev/null +++ b/dovecot/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. +# See also ssl=required setting. +#disable_plaintext_auth = yes + +# Authentication cache size (e.g. 10M). 0 means it's disabled. Note that +# bsdauth and PAM 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 = %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 . 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. +#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 +# 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. +# +# +# +# User database specifies where mails are located and what user/group IDs +# own them. For single-UID configuration use "static" userdb. +# +# + +#!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-static.conf.ext diff --git a/dovecot/10-director.conf b/dovecot/10-director.conf new file mode 100644 index 0000000..287256a --- /dev/null +++ b/dovecot/10-director.conf @@ -0,0 +1,60 @@ +## +## Director-specific settings. +## + +# Director can be used by Dovecot proxy to keep a temporary user -> mail server +# mapping. As long as user has simultaneous connections, the user is always +# redirected to the same server. Each proxy server is running its own director +# process, and the directors are communicating the state to each others. +# Directors are mainly useful with NFS-like setups. + +# List of IPs or hostnames to all director servers, including ourself. +# Ports can be specified as ip:port. The default port is the same as +# what director service's inet_listener is using. +#director_servers = + +# List of IPs or hostnames to all backend mail servers. Ranges are allowed +# too, like 10.0.0.10-10.0.0.30. +#director_mail_servers = + +# How long to redirect users to a specific server after it no longer has +# any connections. +#director_user_expire = 15 min + +# How the username is translated before being hashed. Useful values include +# %Ln if user can log in with or without @domain, %Ld if mailboxes are shared +# within domain. +#director_username_hash = %Lu + +# To enable director service, uncomment the modes and assign a port. +service director { + unix_listener login/director { + #mode = 0666 + } + fifo_listener login/proxy-notify { + #mode = 0666 + } + unix_listener director-userdb { + #mode = 0600 + } + inet_listener { + #port = + } +} + +# Enable director for the wanted login services by telling them to +# connect to director socket instead of the default login socket: +service imap-login { + #executable = imap-login director +} +service pop3-login { + #executable = pop3-login director +} +service submission-login { + #executable = submission-login director +} + +# Enable director for LMTP proxying: +protocol lmtp { + #auth_socket_path = director-userdb +} diff --git a/dovecot/10-logging.conf b/dovecot/10-logging.conf new file mode 100644 index 0000000..c49add3 --- /dev/null +++ b/dovecot/10-logging.conf @@ -0,0 +1,109 @@ +## +## 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 filter is a space-separated list conditions. If any of the conditions +# match, the log filter matches (i.e. they're ORed together). Parenthesis +# are supported if multiple conditions need to be matched together. +# Supported conditions are: +# event: - Match event name. '*' and '?' wildcards supported. +# source:[:] - Match source code filename [and line] +# field:= - Match field key to a value. Can be specified +# multiple times to match multiple keys. +# cat[egory]: - Match a category. Can be specified multiple times to +# match multiple categories. +# For example: event:http_request_* (cat:error cat:storage) + +# Filter to specify what debug logging to enable. This will eventually replace +# mail_debug and auth_debug settings. +#log_debug = + +# Crash after logging a matching event. For example category:error will crash +# any time an error is logged, which can be useful for debugging. +#log_core_filter = + +# 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 = "%b %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 = %$: %s + +# Log prefix for mail processes. See doc/wiki/Variables.txt for list of +# possible variables you can use. +#mail_log_prefix = "%s(%u)<%{pid}><%{session}>: " + +# Format to use for logging mail deliveries: +# %$ - Delivery status message (e.g. "saved to INBOX") +# %m / %{msgid} - Message-ID +# %s / %{subject} - Subject +# %f / %{from} - From address +# %p / %{size} - Physical size +# %w / %{vsize} - Virtual size +# %e / %{from_envelope} - MAIL FROM envelope +# %{to_envelope} - RCPT TO envelope +# %{delivery_time} - How many milliseconds it took to deliver the mail +# %{session_time} - How long LMTP session took, not including delivery_time +# %{storage_id} - Backend-specific ID for mail, e.g. Maildir filename +#deliver_log_format = msgid=%m: %$ diff --git a/dovecot/10-mail.conf b/dovecot/10-mail.conf new file mode 100644 index 0000000..aa0925b --- /dev/null +++ b/dovecot/10-mail.conf @@ -0,0 +1,421 @@ +## +## 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 +# +# +# +mail_location = mbox:~/mail:INBOX=/var/mail/%u + +# 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. +#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 = mail + +# 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 where mails can be temporarily stored. Usually it's used only for +# mails larger than >= 128 kB. It's used by various parts of Dovecot, for +# example LDA/LMTP while delivering large mails or zlib plugin for keeping +# uncompressed mails. +#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. +#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. +#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 + +# Trust mailbox list index to be up-to-date. This reduces disk I/O at the cost +# of potentially returning out-of-date results after e.g. server crashes. +# The results will be automatically fixed once the folders are opened. +#mailbox_list_index_very_dirty_syncs = yes + +# Should INBOX be kept up-to-date in the mailbox list index? By default it's +# not, because most of the mailbox accesses will open INBOX anyway. +#mailbox_list_index_include_inbox = no + +# 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 + +# How many slow mail accesses sorting can perform before it returns failure. +# With IMAP the reply is: NO [LIMIT] Requested sort would have taken too long. +# The untagged SORT reply is still returned, but it's likely not correct. +#mail_sort_max_read_count = 0 + +protocol !indexer-worker { + # If folder vsize calculation requires opening more than this many mails from + # disk (i.e. mail sizes aren't in cache already), return failure and finish + # the calculation via indexer process. Disabled by default. This setting must + # be 0 for indexer-worker processes. + #mail_vsize_bg_after_count = 0 +} + +## +## 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= 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 .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 = 10M + +# 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} + +# Settings to control adding $HasAttachment or $HasNoAttachment keywords. +# By default, all MIME parts with Content-Disposition=attachment, or inlines +# with filename parameter are consired attachments. +# add-flags - Add the keywords when saving new mails or when fetching can +# do it efficiently. +# content-type=type or !type - Include/exclude content type. Excluding will +# never consider the matched MIME part as attachment. Including will only +# negate an exclusion (e.g. content-type=!foo/* content-type=foo/bar). +# exclude-inlined - Exclude any Content-Disposition=inline MIME part. +#mail_attachment_detection_options = diff --git a/dovecot/10-master.conf b/dovecot/10-master.conf new file mode 100644 index 0000000..73dc404 --- /dev/null +++ b/dovecot/10-master.conf @@ -0,0 +1,130 @@ +#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. + #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 submission-login { + inet_listener submission { + #port = 587 + } +} + +service lmtp { + unix_listener lmtp { + #mode = 0666 + } + + # 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 submission { + # Max. number of SMTP Submission 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 = + } + + # Postfix smtp-auth + #unix_listener /var/spool/postfix/private/auth { + # mode = 0666 + #} + + # 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/10-ssl.conf b/dovecot/10-ssl.conf new file mode 100644 index 0000000..fff8bf8 --- /dev/null +++ b/dovecot/10-ssl.conf @@ -0,0 +1,80 @@ +## +## SSL settings +## + +# SSL/TLS support: yes, no, required. +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 = 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 = + +# 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 +} diff --git a/dovecot/15-mailboxes.conf b/dovecot/15-mailboxes.conf new file mode 100644 index 0000000..b226d80 --- /dev/null +++ b/dovecot/15-mailboxes.conf @@ -0,0 +1,86 @@ +## +## 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. +# \Important - This (virtual) mailbox presents all messages in the +# user's message store deemed important to user. +# \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 { + special_use = \Junk + } + mailbox Trash { + 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 + #} + + # If you have a virtual "Important" mailbox: + #mailbox virtual/Important { + # special_use = \Important + # comment = All my important messages + #} +} diff --git a/dovecot/20-imap.conf b/dovecot/20-imap.conf new file mode 100644 index 0000000..9b5546d --- /dev/null +++ b/dovecot/20-imap.conf @@ -0,0 +1,99 @@ +## +## 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, which does not +# include automatically expunged mails +# %{autoexpunged} - Number of mails that were automatically expunged after +# client disconnected +# %{trashed} - Number of mails that client copied/moved to the +# special_use=\Trash mailbox. +# %{appended} - Number of mails saved during the session +#imap_logout_format = in=%i out=%o deleted=%{deleted} expunged=%{expunged} \ +# trashed=%{trashed} hdr_count=%{fetch_hdr_count} \ +# hdr_bytes=%{fetch_hdr_bytes} body_count=%{fetch_body_count} \ +# body_bytes=%{fetch_body_bytes} + +# Override the IMAP CAPABILITY response. If the value begins with '+', +# add the given capabilities on top of the defaults (e.g. +XFOO XBAR). +#imap_capability = + +# How long to wait between "OK Still here" notifications when client is +# IDLEing. +#imap_idle_notify_interval = 2 mins + +# ID field names and values to send to clients. Using * as the value makes +# Dovecot use the default value. The following fields have default values +# currently: name, version, os, os-version, support-url, support-email, +# revision. +#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 () instead of full path +# syntax. +# +# The list is space-separated. +#lmtp_client_workarounds = + +protocol lmtp { + # Space separated list of plugins to load (default is global mail_plugins). + #mail_plugins = $mail_plugins +} diff --git a/dovecot/90-acl.conf b/dovecot/90-acl.conf new file mode 100644 index 0000000..f0c0e7a --- /dev/null +++ b/dovecot/90-acl.conf @@ -0,0 +1,19 @@ +## +## Mailbox access control lists. +## + +# vfile backend reads ACLs from "dovecot-acl" file from mail directory. +# You can also optionally give a global ACL directory path where ACLs are +# applied to all users' mailboxes. The global ACL directory contains +# one file for each mailbox, eg. INBOX or sub.mailbox. cache_secs parameter +# specifies how many seconds to wait between stat()ing dovecot-acl file +# to see if it changed. +plugin { + #acl = vfile:/etc/dovecot/global-acls:cache_secs=300 +} + +# To let users LIST mailboxes shared by other users, Dovecot needs a +# shared mailbox dictionary. For example: +plugin { + #acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes +} diff --git a/dovecot/90-plugin.conf b/dovecot/90-plugin.conf new file mode 100644 index 0000000..8c8fccf --- /dev/null +++ b/dovecot/90-plugin.conf @@ -0,0 +1,11 @@ +## +## Plugin settings +## + +# All wanted plugins must be listed in mail_plugins setting before any of the +# settings take effect. See for list of plugins and +# their configuration. Note that %variable expansion is done for all values. + +plugin { + #setting_name = value +} diff --git a/dovecot/90-quota.conf b/dovecot/90-quota.conf new file mode 100644 index 0000000..3308c05 --- /dev/null +++ b/dovecot/90-quota.conf @@ -0,0 +1,83 @@ +## +## Quota configuration. +## + +# Note that you also have to enable quota plugin in mail_plugins setting. +# + +## +## Quota limits +## + +# Quota limits are set using "quota_rule" parameters. To get per-user quota +# limits, you can set/override them by returning "quota_rule" extra field +# from userdb. It's also possible to give mailbox-specific limits, for example +# to give additional 100 MB when saving to Trash: + +plugin { + #quota_rule = *:storage=1G + #quota_rule2 = Trash:storage=+100M + + # LDA/LMTP allows saving the last mail to bring user from under quota to + # over quota, if the quota doesn't grow too high. Default is to allow as + # long as quota will stay under 10% above the limit. Also allowed e.g. 10M. + #quota_grace = 10%% + + # Quota plugin can also limit the maximum accepted mail size. + #quota_max_mail_size = 100M +} + +## +## Quota warnings +## + +# You can execute a given command when user exceeds a specified quota limit. +# Each quota root has separate limits. Only the command for the first +# exceeded limit is executed, so put the highest limit first. +# The commands are executed via script service by connecting to the named +# UNIX socket (quota-warning below). +# Note that % needs to be escaped as %%, otherwise "% " expands to empty. + +plugin { + #quota_warning = storage=95%% quota-warning 95 %u + #quota_warning2 = storage=80%% quota-warning 80 %u +} + +# Example quota-warning service. The unix listener's permissions should be +# set in a way that mail processes can connect to it. Below example assumes +# that mail processes run as vmail user. If you use mode=0666, all system users +# can generate quota warnings to anyone. +#service quota-warning { +# executable = script /usr/local/bin/quota-warning.sh +# user = dovecot +# unix_listener quota-warning { +# user = vmail +# } +#} + +## +## Quota backends +## + +# Multiple backends are supported: +# dirsize: Find and sum all the files found from mail directory. +# Extremely SLOW with Maildir. It'll eat your CPU and disk I/O. +# dict: Keep quota stored in dictionary (eg. SQL) +# maildir: Maildir++ quota +# fs: Read-only support for filesystem quota + +plugin { + #quota = dirsize:User quota + #quota = maildir:User quota + #quota = dict:User quota::proxy::quota + #quota = fs:User quota +} + +# Multiple quota roots are also possible, for example this gives each user +# their own 100MB quota and one shared 1GB quota within the domain: +plugin { + #quota = dict:user::proxy::quota + #quota2 = dict:domain:%d:proxy::quota_domain + #quota_rule = *:storage=102400 + #quota2_rule = *:storage=1048576 +} diff --git a/dovecot/README b/dovecot/README new file mode 100644 index 0000000..59a39df --- /dev/null +++ b/dovecot/README @@ -0,0 +1,52 @@ +dovecot +======= + +Mail Delivery Agent. Works with IMAP and POP3 servers. IMAP listens on port 143. +IMAPS (IMAP over TLS) listens on port 993. + +Verify configuration: + +``` +dovecot -n +``` + +Files +----- + +dovecot +| +|-> dovecot.conf -- /etc/dovecot/ +|-> dovecot-dict-auth.conf.ext -- /etc/dovecot/ +|-> dovecot-dict-sql.conf.ext -- /etc/dovecot/ +|-> dovecot-sql.conf.ext -- /etc/dovecot/ +|-> 10-auth.conf -- /etc/dovecot/conf.d/ +|-> 10-director.conf -- /etc/dovecot/conf.d/ +|-> 10-logging.conf -- /etc/dovecot/conf.d/ +|-> 10-mail.conf -- /etc/dovecot/conf.d/ +|-> 10-master.conf -- /etc/dovecot/conf.d/ +|-> 10-ssl.conf -- /etc/dovecot/conf.d/ +|-> 10-tcpwrapper.conf -- /etc/dovecot/conf.d/ +|-> 15-lda.conf -- /etc/dovecot/conf.d/ +|-> 15-mailboxes.conf -- /etc/dovecot/conf.d/ +|-> 20-imap.conf -- /etc/dovecot/conf.d/ +|-> 20-lmtp.conf -- /etc/dovecot/conf.d/ +|-> 90-acl.conf -- /etc/dovecot/conf.d/ +|-> 90-plugin.conf -- /etc/dovecot/conf.d/ +|-> 90-quota.conf -- /etc/dovecot/conf.d/ +|-> auth-checkpassword.conf.ext -- /etc/dovecot/conf.d/ +|-> auth-deny.conf.ext -- /etc/dovecot/conf.d/ +|-> auth-dict.conf.ext -- /etc/dovecot/conf.d/ +|-> auth-master.conf.ext -- /etc/dovecot/conf.d/ +|-> auth-passwdfile.conf.ext -- /etc/dovecot/conf.d/ +|-> auth-sql.conf.ext -- /etc/dovecot/conf.d/ +|-> auth-static.conf.ext -- /etc/dovecot/conf.d/ +`-> auth-system.conf.ext -- /etc/dovecot/conf.d/ + +Install +------- + +Each package corresponds to a plugin: + +``` +$ apt install dovecot-imapd dovecot-pgsql +``` diff --git a/dovecot/auth-checkpassword.conf.ext b/dovecot/auth-checkpassword.conf.ext new file mode 100644 index 0000000..b2fb13a --- /dev/null +++ b/dovecot/auth-checkpassword.conf.ext @@ -0,0 +1,21 @@ +# Authentication for checkpassword users. Included from 10-auth.conf. +# +# + +passdb { + driver = checkpassword + args = /usr/bin/checkpassword +} + +# passdb lookup should return also userdb info +userdb { + driver = prefetch +} + +# Standard checkpassword doesn't support direct userdb lookups. +# If you need checkpassword userdb, the checkpassword must support +# Dovecot-specific extensions. +#userdb { +# driver = checkpassword +# args = /usr/bin/checkpassword +#} diff --git a/dovecot/auth-deny.conf.ext b/dovecot/auth-deny.conf.ext new file mode 100644 index 0000000..ce3f1cf --- /dev/null +++ b/dovecot/auth-deny.conf.ext @@ -0,0 +1,15 @@ +# Deny access for users. Included from 10-auth.conf. + +# Users can be (temporarily) disabled by adding a passdb with deny=yes. +# If the user is found from that database, authentication will fail. +# The deny passdb should always be specified before others, so it gets +# checked first. + +# Example deny passdb using passwd-file. You can use any passdb though. +passdb { + driver = passwd-file + deny = yes + + # File contains a list of usernames, one per line + args = /etc/dovecot/deny-users +} diff --git a/dovecot/auth-dict.conf.ext b/dovecot/auth-dict.conf.ext new file mode 100644 index 0000000..0be4847 --- /dev/null +++ b/dovecot/auth-dict.conf.ext @@ -0,0 +1,16 @@ +# Authentication via dict backend. Included from 10-auth.conf. +# +# + +passdb { + driver = dict + + # Path for dict configuration file, see + # example-config/dovecot-dict-auth.conf.ext + args = /etc/dovecot/dovecot-dict-auth.conf.ext +} + +userdb { + driver = dict + args = /etc/dovecot/dovecot-dict-auth.conf.ext +} diff --git a/dovecot/auth-master.conf.ext b/dovecot/auth-master.conf.ext new file mode 100644 index 0000000..2cf128f --- /dev/null +++ b/dovecot/auth-master.conf.ext @@ -0,0 +1,16 @@ +# Authentication for master users. Included from 10-auth.conf. + +# By adding master=yes setting inside a passdb you make the passdb a list +# of "master users", who can log in as anyone else. +# + +# Example master user passdb using passwd-file. You can use any passdb though. +passdb { + driver = passwd-file + master = yes + args = /etc/dovecot/master-users + + # Unless you're using PAM, you probably still want the destination user to + # be looked up from passdb that it really exists. pass=yes does that. + pass = yes +} diff --git a/dovecot/auth-passwdfile.conf.ext b/dovecot/auth-passwdfile.conf.ext new file mode 100644 index 0000000..c89d28c --- /dev/null +++ b/dovecot/auth-passwdfile.conf.ext @@ -0,0 +1,20 @@ +# Authentication for passwd-file users. Included from 10-auth.conf. +# +# passwd-like file with specified location. +# + +passdb { + driver = passwd-file + args = scheme=CRYPT username_format=%u /etc/dovecot/users +} + +userdb { + driver = passwd-file + args = username_format=%u /etc/dovecot/users + + # Default fields that can be overridden by passwd-file + #default_fields = quota_rule=*:storage=1G + + # Override fields from passwd-file + #override_fields = home=/home/virtual/%u +} diff --git a/dovecot/auth-sql.conf.ext b/dovecot/auth-sql.conf.ext new file mode 100644 index 0000000..ccbea86 --- /dev/null +++ b/dovecot/auth-sql.conf.ext @@ -0,0 +1,30 @@ +# Authentication for SQL users. Included from 10-auth.conf. +# +# + +passdb { + driver = sql + + # Path for SQL configuration file, see example-config/dovecot-sql.conf.ext + args = /etc/dovecot/dovecot-sql.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. +# +#userdb { +# driver = prefetch +#} + +userdb { + driver = sql + args = /etc/dovecot/dovecot-sql.conf.ext +} + +# If you don't have any user-specific settings, you can avoid the user_query +# by using userdb static instead of userdb sql, for example: +# +#userdb { + #driver = static + #args = uid=vmail gid=vmail home=/var/vmail/%u +#} diff --git a/dovecot/auth-static.conf.ext b/dovecot/auth-static.conf.ext new file mode 100644 index 0000000..90890c5 --- /dev/null +++ b/dovecot/auth-static.conf.ext @@ -0,0 +1,24 @@ +# Static passdb. Included from 10-auth.conf. + +# This can be used for situations where Dovecot doesn't need to verify the +# username or the password, or if there is a single password for all users: +# +# - proxy frontend, where the backend verifies the password +# - proxy backend, where the frontend already verified the password +# - authentication with SSL certificates +# - simple testing + +#passdb { +# driver = static +# args = proxy=y host=%1Mu.example.com nopassword=y +#} + +#passdb { +# driver = static +# args = password=test +#} + +#userdb { +# driver = static +# args = uid=vmail gid=vmail home=/home/%u +#} diff --git a/dovecot/auth-system.conf.ext b/dovecot/auth-system.conf.ext new file mode 100644 index 0000000..f9b2813 --- /dev/null +++ b/dovecot/auth-system.conf.ext @@ -0,0 +1,74 @@ +# Authentication for system users. Included from 10-auth.conf. +# +# +# + +# PAM authentication. Preferred nowadays by most systems. +# PAM is typically used with either userdb passwd or userdb static. +# REMEMBER: You'll need /etc/pam.d/dovecot file created for PAM +# authentication to actually work. +passdb { + driver = pam + # [session=yes] [setcred=yes] [failure_show_msg=yes] [max_requests=] + # [cache_key=] [] + #args = dovecot +} + +# System users (NSS, /etc/passwd, or similar). +# In many systems nowadays this uses Name Service Switch, which is +# configured in /etc/nsswitch.conf. +#passdb { + #driver = passwd + # [blocking=no] + #args = +#} + +# Shadow passwords for system users (NSS, /etc/shadow or similar). +# Deprecated by PAM nowadays. +# +#passdb { + #driver = shadow + # [blocking=no] + #args = +#} + +# PAM-like authentication for OpenBSD. +# +#passdb { + #driver = bsdauth + # [blocking=no] [cache_key=] + #args = +#} + +## +## User databases +## + +# System users (NSS, /etc/passwd, or similar). In many systems nowadays this +# uses Name Service Switch, which is configured in /etc/nsswitch.conf. +userdb { + # + driver = passwd + # [blocking=no] + #args = + + # Override fields from passwd + #override_fields = home=/home/virtual/%u +} + +# Static settings generated from template +#userdb { + #driver = static + # Can return anything a userdb could normally return. For example: + # + # args = uid=500 gid=500 home=/var/mail/%u + # + # LDA and LMTP needs to look up users only from the userdb. This of course + # doesn't work with static userdb because there is no list of users. + # Normally static userdb handles this by doing a passdb lookup. This works + # with most passdbs, with PAM being the most notable exception. If you do + # the user verification another way, you can add allow_all_users=yes to + # the args in which case the passdb lookup is skipped. + # + #args = +#} diff --git a/dovecot/dovecot-dict-auth.conf.ext b/dovecot/dovecot-dict-auth.conf.ext new file mode 100644 index 0000000..a6b95bc --- /dev/null +++ b/dovecot/dovecot-dict-auth.conf.ext @@ -0,0 +1,54 @@ +# This file is commonly accessed via passdb {} or userdb {} section in +# conf.d/auth-dict.conf.ext + +# Dictionary URI +#uri = + +# Default password scheme +default_pass_scheme = MD5 + +# Username iteration prefix. Keys under this are assumed to contain usernames. +iterate_prefix = userdb/ + +# Should iteration be disabled for this userdb? If this userdb acts only as a +# cache there's no reason to try to iterate the (partial & duplicate) users. +#iterate_disable = no + +# The example here shows how to do multiple dict lookups and merge the replies. +# The "passdb" and "userdb" keys are JSON objects containing key/value pairs, +# for example: { "uid": 1000, "gid": 1000, "home": "/home/user" } + +key passdb { + key = passdb/%u + format = json +} +key userdb { + key = userdb/%u + format = json +} +key quota { + key = userdb/%u/quota + #format = value + # The default_value is used if the key isn't found. If default_value setting + # isn't specified at all (even as empty), the passdb/userdb lookup fails with + # "user doesn't exist". + default_value = 100M +} + +# Space separated list of keys whose values contain key/value paired objects. +# All the key/value pairs inside the object are added as passdb fields. +passdb_objects = passdb + +#passdb_fields { +#} + +# Userdb key/value object list. +userdb_objects = userdb + +userdb_fields { + # dict: refers to key names + quota_rule = *:storage=%{dict:quota} + + # dict:. refers to the objkey inside (JSON) object + mail = maildir:%{dict:userdb.home}/Maildir +} diff --git a/dovecot/dovecot-dict-sql.conf.ext b/dovecot/dovecot-dict-sql.conf.ext new file mode 100644 index 0000000..a9a903f --- /dev/null +++ b/dovecot/dovecot-dict-sql.conf.ext @@ -0,0 +1,41 @@ +# This file is commonly accessed via dict {} section in dovecot.conf + +#connect = host=localhost dbname=mails user=testuser password=pass + +# CREATE TABLE quota ( +# username varchar(100) not null, +# bytes bigint not null default 0, +# messages integer not null default 0, +# primary key (username) +# ); + +map { + pattern = priv/quota/storage + table = quota + username_field = username + value_field = bytes +} +map { + pattern = priv/quota/messages + table = quota + username_field = username + value_field = messages +} + +# CREATE TABLE expires ( +# username varchar(100) not null, +# mailbox varchar(255) not null, +# expire_stamp integer not null, +# primary key (username, mailbox) +# ); + +map { + pattern = shared/expire/$user/$mailbox + table = expires + value_field = expire_stamp + + fields { + username = $user + mailbox = $mailbox + } +} diff --git a/dovecot/dovecot-sql.conf.ext b/dovecot/dovecot-sql.conf.ext new file mode 100644 index 0000000..0bc854b --- /dev/null +++ b/dovecot/dovecot-sql.conf.ext @@ -0,0 +1,144 @@ +# This file is commonly accessed via passdb {} or userdb {} section in +# conf.d/auth-sql.conf.ext + +# This file is opened as root, so it should be owned by root and mode 0600. +# +# http://wiki2.dovecot.org/AuthDatabase/SQL +# +# For the sql passdb module, you'll need a database with a table that +# contains fields for at least the username and password. If you want to +# use the user@domain syntax, you might want to have a separate domain +# field as well. +# +# If your users all have the same uig/gid, and have predictable home +# directories, you can use the static userdb module to generate the home +# dir based on the username and domain. In this case, you won't need fields +# for home, uid, or gid in the database. +# +# If you prefer to use the sql userdb module, you'll want to add fields +# for home, uid, and gid. Here is an example table: +# +# CREATE TABLE users ( +# username VARCHAR(128) NOT NULL, +# domain VARCHAR(128) NOT NULL, +# password VARCHAR(64) NOT NULL, +# home VARCHAR(255) NOT NULL, +# uid INTEGER NOT NULL, +# gid INTEGER NOT NULL, +# active CHAR(1) DEFAULT 'Y' NOT NULL +# ); + +# Database driver: mysql, pgsql, sqlite +driver = pgsql + +# Database connection string. This is driver-specific setting. +# +# HA / round-robin load-balancing is supported by giving multiple host +# settings, like: host=sql1.host.org host=sql2.host.org +# +# pgsql: +# For available options, see the PostgreSQL documentation for the +# PQconnectdb function of libpq. +# Use maxconns=n (default 5) to change how many connections Dovecot can +# create to pgsql. +# +# mysql: +# Basic options emulate PostgreSQL option names: +# host, port, user, password, dbname +# +# But also adds some new settings: +# client_flags - See MySQL manual +# connect_timeout - Connect timeout in seconds (default: 5) +# read_timeout - Read timeout in seconds (default: 30) +# write_timeout - Write timeout in seconds (default: 30) +# ssl_ca, ssl_ca_path - Set either one or both to enable SSL +# ssl_cert, ssl_key - For sending client-side certificates to server +# ssl_cipher - Set minimum allowed cipher security (default: HIGH) +# ssl_verify_server_cert - Verify that the name in the server SSL certificate +# matches the host (default: no) +# option_file - Read options from the given file instead of +# the default my.cnf location +# option_group - Read options from the given group (default: client) +# +# You can connect to UNIX sockets by using host: host=/var/run/mysql.sock +# Note that currently you can't use spaces in parameters. +# +# sqlite: +# The path to the database file. +# +# Examples: +# connect = host=192.168.1.1 dbname=users +# connect = host=sql.example.com dbname=virtual user=virtual password=blarg +# connect = /etc/dovecot/authdb.sqlite +# +#connect = + +# Default password scheme. +# +# List of supported schemes is in +# http://wiki2.dovecot.org/Authentication/PasswordSchemes +# +#default_pass_scheme = MD5 + +# passdb query to retrieve the password. It can return fields: +# password - The user's password. This field must be returned. +# user - user@domain from the database. Needed with case-insensitive lookups. +# username and domain - An alternative way to represent the "user" field. +# +# The "user" field is often necessary with case-insensitive lookups to avoid +# e.g. "name" and "nAme" logins creating two different mail directories. If +# your user and domain names are in separate fields, you can return "username" +# and "domain" fields instead of "user". +# +# The query can also return other fields which have a special meaning, see +# http://wiki2.dovecot.org/PasswordDatabase/ExtraFields +# +# Commonly used available substitutions (see http://wiki2.dovecot.org/Variables +# for full list): +# %u = entire user@domain +# %n = user part of user@domain +# %d = domain part of user@domain +# +# Note that these can be used only as input to SQL query. If the query outputs +# any of these substitutions, they're not touched. Otherwise it would be +# difficult to have eg. usernames containing '%' characters. +# +# Example: +# password_query = SELECT userid AS user, pw AS password \ +# FROM users WHERE userid = '%u' AND active = 'Y' +# +#password_query = \ +# SELECT username, domain, password \ +# FROM users WHERE username = '%n' AND domain = '%d' + +# userdb query to retrieve the user information. It can return fields: +# uid - System UID (overrides mail_uid setting) +# gid - System GID (overrides mail_gid setting) +# home - Home directory +# mail - Mail location (overrides mail_location setting) +# +# None of these are strictly required. If you use a single UID and GID, and +# home or mail directory fits to a template string, you could use userdb static +# instead. For a list of all fields that can be returned, see +# http://wiki2.dovecot.org/UserDatabase/ExtraFields +# +# Examples: +# user_query = SELECT home, uid, gid FROM users WHERE userid = '%u' +# user_query = SELECT dir AS home, user AS uid, group AS gid FROM users where userid = '%u' +# user_query = SELECT home, 501 AS uid, 501 AS gid FROM users WHERE userid = '%u' +# +#user_query = \ +# SELECT home, uid, gid \ +# FROM users WHERE username = '%n' AND domain = '%d' + +# If you wish to avoid two SQL lookups (passdb + userdb), you can use +# userdb prefetch instead of userdb sql in dovecot.conf. In that case you'll +# also have to return userdb fields in password_query prefixed with "userdb_" +# string. For example: +#password_query = \ +# SELECT userid AS user, password, \ +# home AS userdb_home, uid AS userdb_uid, gid AS userdb_gid \ +# FROM users WHERE userid = '%u' + +# Query to get a list of all usernames. +#iterate_query = SELECT username AS user FROM users diff --git a/dovecot/dovecot.conf b/dovecot/dovecot.conf new file mode 100644 index 0000000..2896659 --- /dev/null +++ b/dovecot/dovecot.conf @@ -0,0 +1,102 @@ +## Dovecot configuration file + +# If you're in a hurry, see http://wiki2.dovecot.org/QuickConfiguration + +# "doveconf -n" command gives a clean output of the changed settings. Use it +# instead of copy&pasting files when posting to the Dovecot mailing list. + +# '#' character and everything after it is treated as comments. Extra spaces +# and tabs are ignored. If you want to use either of these explicitly, put the +# value inside quotes, eg.: key = "# char and trailing whitespace " + +# Most (but not all) settings can be overridden by different protocols and/or +# source/destination IPs by placing the settings inside sections, for example: +# protocol imap { }, local 127.0.0.1 { }, remote 10.0.0.0/8 { } + +# Default values are shown for each setting, it's not required to uncomment +# those. These are exceptions to this though: No sections (e.g. namespace {}) +# or plugin settings are added by default, they're listed only as examples. +# Paths are also just examples with the real defaults being based on configure +# options. The paths listed here are for configure --prefix=/usr +# --sysconfdir=/etc --localstatedir=/var + +# Enable installed protocols +!include_try /usr/share/dovecot/protocols.d/*.protocol + +# A comma separated list of IPs or hosts where to listen in for connections. +# "*" listens in all IPv4 interfaces, "::" listens in all IPv6 interfaces. +# If you want to specify non-default ports or anything more complex, +# edit conf.d/master.conf. +#listen = *, :: + +# Base directory where to store runtime data. +#base_dir = /var/run/dovecot/ + +# Name of this instance. In multi-instance setup doveadm and other commands +# can use -i to select which instance is used (an alternative +# to -c ). The instance name is also added to Dovecot processes +# in ps output. +#instance_name = dovecot + +# Greeting message for clients. +#login_greeting = Dovecot ready. + +# Space separated list of trusted network ranges. Connections from these +# IPs are allowed to override their IP addresses and ports (for logging and +# for authentication checks). disable_plaintext_auth is also ignored for +# these networks. Typically you'd specify your IMAP proxy servers here. +#login_trusted_networks = + +# Space separated list of login access check sockets (e.g. tcpwrap) +#login_access_sockets = + +# With proxy_maybe=yes if proxy destination matches any of these IPs, don't do +# proxying. This isn't necessary normally, but may be useful if the destination +# IP is e.g. a load balancer's IP. +#auth_proxy_self = + +# Show more verbose process titles (in ps). Currently shows user name and +# IP address. Useful for seeing who are actually using the IMAP processes +# (eg. shared mailboxes or if same uid is used for multiple accounts). +#verbose_proctitle = no + +# Should all processes be killed when Dovecot master process shuts down. +# Setting this to "no" means that Dovecot can be upgraded without +# forcing existing client connections to close (although that could also be +# a problem if the upgrade is e.g. because of a security fix). +#shutdown_clients = yes + +# If non-zero, run mail commands via this many connections to doveadm server, +# instead of running them directly in the same process. +#doveadm_worker_count = 0 +# UNIX socket or host:port used for connecting to doveadm server +#doveadm_socket_path = doveadm-server + +# Space separated list of environment variables that are preserved on Dovecot +# startup and passed down to all of its child processes. You can also give +# key=value pairs to always set specific settings. +#import_environment = TZ + +## +## Dictionary server settings +## + +# Dictionary can be used to store key=value lists. This is used by several +# plugins. The dictionary can be accessed either directly or though a +# dictionary server. The following dict block maps dictionary names to URIs +# when the server is used. These can then be referenced using URIs in format +# "proxy::". + +dict { + #quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext + #expire = sqlite:/etc/dovecot/dovecot-dict-sql.conf.ext +} + +# Most of the actual configuration gets included below. The filenames are +# first sorted by their ASCII value and parsed in that order. The 00-prefixes +# in filenames are intended to make it easier to understand the ordering. +!include conf.d/*.conf + +# A config file can also tried to be included without giving an error if +# it's not found: +!include_try local.conf -- 2.39.5