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Merge pull request #123 from 00angus/v2

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Dovecot based mailserver (#109)
This commit is contained in:
Thomas VIAL 2016-04-11 13:43:22 +02:00
parent ae5052f210 56b8b12966
commit 69b7bb3128
16 changed files with 1082 additions and 104 deletions
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17
Dockerfile
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@ -4,20 +4,16 @@ MAINTAINER Thomas VIAL
# Packages
RUN apt-get update -q --fix-missing
RUN apt-get -y upgrade
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install vim postfix sasl2-bin courier-imap courier-imap-ssl \
courier-pop courier-pop-ssl courier-authdaemon supervisor gamin amavisd-new spamassassin clamav clamav-daemon libnet-dns-perl libmail-spf-perl \
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install vim postfix dovecot-core dovecot-imapd dovecot-pop3d \
supervisor gamin amavisd-new spamassassin clamav clamav-daemon libnet-dns-perl libmail-spf-perl \
pyzor razor arj bzip2 cabextract cpio file gzip nomarch p7zip pax unzip zip zoo rsyslog mailutils netcat \
opendkim opendkim-tools opendmarc curl fail2ban
RUN apt-get autoclean && rm -rf /var/lib/apt/lists/*
# Configures Saslauthd
RUN rm -rf /var/run/saslauthd && ln -s /var/spool/postfix/var/run/saslauthd /var/run/saslauthd
RUN adduser postfix sasl
RUN echo 'NAME="saslauthd"\nSTART=yes\nMECHANISMS="sasldb"\nTHREADS=0\nPWDIR=/var/spool/postfix/var/run/saslauthd\nPIDFILE="${PWDIR}/saslauthd.pid"\nOPTIONS="-n 0 -c -m /var/spool/postfix/var/run/saslauthd"' > /etc/default/saslauthd
# Configures Courier
RUN sed -i -r 's/daemons=5/daemons=1/g' /etc/courier/authdaemonrc
RUN sed -i -r 's/authmodulelist="authpam"/authmodulelist="authuserdb"/g' /etc/courier/authdaemonrc
# Configures Dovecot
RUN sed -i -e 's/include_try \/usr\/share\/dovecot\/protocols\.d/include_try \/etc\/dovecot\/protocols\.d/g' /etc/dovecot/dovecot.conf
ADD dovecot/auth-passwdfile.inc /etc/dovecot/conf.d/
ADD dovecot/10-*.conf /etc/dovecot/conf.d/
# Enables Spamassassin and CRON updates
RUN sed -i -r 's/^(CRON|ENABLED)=0/\1=1/g' /etc/default/spamassassin
@ -47,7 +43,6 @@ ADD postfix/default-opendmarc /etc/default/opendmarc
# Configures Postfix
ADD postfix/main.cf /etc/postfix/main.cf
ADD postfix/master.cf /etc/postfix/master.cf
ADD postfix/sasl/smtpd.conf /etc/postfix/sasl/smtpd.conf
ADD bin/generate-ssl-certificate /usr/local/bin/generate-ssl-certificate
RUN chmod +x /usr/local/bin/generate-ssl-certificate

0
LICENCE → LICENSE
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7
Makefile
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@ -1,7 +1,8 @@
NAME = tvial/docker-mailserver
NAME = tvial/docker-mailserver:dovecot
all: build run fixtures tests clean
all-no-build: run fixtures tests clean
#all: build run fixtures tests clean
#all-no-build: run fixtures tests clean
all: build
build:
docker build --no-cache -t $(NAME) .

21
README.md
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@ -9,7 +9,7 @@ Easy to deploy and upgrade.
Includes:
- postfix with smtp auth
- courier-imap with ssl support
- dovecot for sasl, imap (and optional pop3) with ssl support
- amavis
- spamassasin supporting custom rules
- clamav with automatic updates
@ -17,7 +17,6 @@ Includes:
- opendmarc
- fail2ban
- [LetsEncrypt](https://letsencrypt.org/) and self-signed certificates
- optional pop3 server
- [integration tests](https://travis-ci.org/tomav/docker-mailserver)
- [automated builds on docker hub](https://hub.docker.com/r/tvial/docker-mailserver/)
@ -45,7 +44,7 @@ Before you open an issue, please have a look this `README`, the [FAQ](https://gi
- ./spamassassin:/tmp/spamassassin/
- ./postfix:/tmp/postfix/
# start he container
# start the container
docker-compose up -d mail
## Managing users and aliases
@ -53,12 +52,22 @@ Before you open an issue, please have a look this `README`, the [FAQ](https://gi
### Users
Users are managed in `postfix/accounts.cf`.
Just add the full email address and its password separated by a pipe.
Just add the full email address and its encrypted password separated by a pipe.
Example:
user1@domain.tld|mypassword
user2@otherdomain.tld|myotherpassword
user1@domain.tld|mypassword-encrypted
user2@otherdomain.tld|myotherpassword-encrypted
To generate the password you could run for example the following:
docker run --rm -ti tvial/docker-mailserver doveadm pw -s MD5-CRYPT -u user1@domain.tld
You will be asked for a password (and for a confirmation of the password). Just copy all the output string in the file `postfix/accounts.cf`.
The `doveadm pw` command let you choose between several encryption schemes for the password.
Use doveadm pw -l to get a list of the currently supported encryption schemes.
### Aliases

128
dovecot/10-auth.conf Normal file
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@ -0,0 +1,128 @@
##
## Authentication processes
##
# Disable LOGIN command and all other plaintext authentications unless
# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP
# matches the local IP (ie. you're connecting from the same computer), the
# connection is considered secure and plaintext authentication is allowed.
# See also ssl=required setting.
#disable_plaintext_auth = yes
# Authentication cache size (e.g. 10M). 0 means it's disabled. Note that
# bsdauth, PAM and vpopmail require cache_key to be set for caching to be used.
#auth_cache_size = 0
# Time to live for cached data. After TTL expires the cached record is no
# longer used, *except* if the main database lookup returns internal failure.
# We also try to handle password changes automatically: If user's previous
# authentication was successful, but this one wasn't, the cache isn't used.
# For now this works only with plaintext authentication.
#auth_cache_ttl = 1 hour
# TTL for negative hits (user not found, password mismatch).
# 0 disables caching them completely.
#auth_cache_negative_ttl = 1 hour
# Space separated list of realms for SASL authentication mechanisms that need
# them. You can leave it empty if you don't want to support multiple realms.
# Many clients simply use the first one listed here, so keep the default realm
# first.
#auth_realms =
# Default realm/domain to use if none was specified. This is used for both
# SASL realms and appending @domain to username in plaintext logins.
#auth_default_realm =
# List of allowed characters in username. If the user-given username contains
# a character not listed in here, the login automatically fails. This is just
# an extra check to make sure user can't exploit any potential quote escaping
# vulnerabilities with SQL/LDAP databases. If you want to allow all characters,
# set this value to empty.
#auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@
# Username character translations before it's looked up from databases. The
# value contains series of from -> to characters. For example "#@/@" means
# that '#' and '/' characters are translated to '@'.
#auth_username_translation =
# Username formatting before it's looked up from databases. You can use
# the standard variables here, eg. %Lu would lowercase the username, %n would
# drop away the domain if it was given, or "%n-AT-%d" would change the '@' into
# "-AT-". This translation is done after auth_username_translation changes.
#auth_username_format = %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 login
##
## Password and user databases
##
#
# Password database is used to verify user's password (and nothing more).
# You can have multiple passdbs and userdbs. This is useful if you want to
# allow both system users (/etc/passwd) and virtual users to login without
# duplicating the system users into virtual database.
#
# <doc/wiki/PasswordDatabase.txt>
#
# User database specifies where mails are located and what user/group IDs
# own them. For single-UID configuration use "static" userdb.
#
# <doc/wiki/UserDatabase.txt>
#!include auth-deny.conf.ext
#!include auth-master.conf.ext
#!include auth-system.conf.ext
#!include auth-sql.conf.ext
#!include auth-ldap.conf.ext
!include auth-passwdfile.inc
#!include auth-checkpassword.conf.ext
#!include auth-vpopmail.conf.ext
#!include auth-static.conf.ext

84
dovecot/10-logging.conf Normal file
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@ -0,0 +1,84 @@
##
## 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 = yes
# 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 = sha1:6
# 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 = %$: %s
# Log prefix for mail processes. See doc/wiki/Variables.txt for list of
# possible variables you can use.
#mail_log_prefix = "%s(%u): "
# Format to use for logging mail deliveries. You can use variables:
# %$ - 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: %$

374
dovecot/10-mail.conf Normal file
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@ -0,0 +1,374 @@
##
## Mailbox locations and namespaces
##
# Location for users' mailboxes. The default is empty, which means that Dovecot
# tries to find the mailboxes automatically. This won't work if the user
# doesn't yet have any mail, so you should explicitly tell Dovecot the full
# location.
#
# If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u)
# isn't enough. You'll also need to tell Dovecot where the other mailboxes are
# kept. This is called the "root mail directory", and it must be the first
# path given in the mail_location setting.
#
# There are a few special variables you can use, eg.:
#
# %u - username
# %n - user part in user@domain, same as %u if there's no domain
# %d - domain part in user@domain, empty if there's no domain
# %h - home directory
#
# See doc/wiki/Variables.txt for full list. Some examples:
#
# mail_location = maildir:~/Maildir
# mail_location = mbox:~/mail:INBOX=/var/mail/%u
# mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
#
# <doc/wiki/MailLocation.txt>
#
mail_location = maildir:/var/mail/%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
}
# Example shared namespace configuration
#namespace {
#type = shared
#separator = /
# Mailboxes are visible under "shared/user@domain/"
# %%n, %%d and %%u are expanded to the destination user.
#prefix = shared/%%u/
# Mail location for other users' mailboxes. Note that %variables and ~/
# expands to the logged in user's data. %%n, %%d, %%u and %%h expand to the
# destination user's data.
#location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u
# Use the default namespace for saving subscriptions.
#subscriptions = no
# List the shared/ namespace only if there are visible shared mailboxes.
#list = children
#}
# Should shared INBOX be visible as "shared/user" or "shared/user/INBOX"?
#mail_shared_explicit_inbox = no
# System user and group used to access mails. If you use multiple, userdb
# can override these by returning uid or gid fields. You can use either numbers
# or names. <doc/wiki/UserIds.txt>
#mail_uid =
#mail_gid =
# Group to enable temporarily for privileged operations. Currently this is
# used only with INBOX when either its initial creation or dotlocking fails.
# Typically this is set to "mail" to give access to /var/mail.
mail_privileged_group = docker
# 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. Currently used by URLAUTH, but
# soon intended to be used by METADATA as well.
#mail_attribute_dict =
##
## 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 =
##
## 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 = 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 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.
#
# The Debian value for mbox_write_locks differs from upstream Dovecot. It is
# changed to be compliant with Debian Policy (section 11.6) for NFS safety.
# Dovecot: mbox_write_locks = dotlock fcntl
# Debian: mbox_write_locks = fcntl dotlock
#
#mbox_read_locks = fcntl
#mbox_write_locks = fcntl dotlock
# Maximum time to wait for lock (all of them) before aborting.
#mbox_lock_timeout = 5 mins
# If dotlock exists but the mailbox isn't modified in any way, override the
# lock file after this much time.
#mbox_dotlock_change_timeout = 2 mins
# When mbox changes unexpectedly we have to fully read it to find out what
# changed. If the mbox is large this can take a long time. Since the change
# is usually just a newly appended mail, it'd be faster to simply read the
# new mails. If this setting is enabled, Dovecot does this but still safely
# fallbacks to re-reading the whole mbox file whenever something in mbox isn't
# how it's expected to be. The only real downside to this setting is that if
# some other MUA changes message flags, Dovecot doesn't notice it immediately.
# Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK
# commands.
#mbox_dirty_syncs = yes
# Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE,
# EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored.
#mbox_very_dirty_syncs = no
# Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK
# commands and when closing the mailbox). This is especially useful for POP3
# where clients often delete all mails. The downside is that our changes
# aren't immediately visible to other MUAs.
#mbox_lazy_writes = yes
# If mbox size is smaller than this (e.g. 100k), don't write index files.
# If an index file already exists it's still read, just not updated.
#mbox_min_index_size = 0
# Mail header selection algorithm to use for MD5 POP3 UIDLs when
# pop3_uidl_format=%m. For backwards compatibility we use apop3d inspired
# algorithm, but it fails if the first Received: header isn't unique in all
# mails. An alternative algorithm is "all" that selects all headers.
#mbox_md5 = apop3d
##
## mdbox-specific settings
##
# Maximum dbox file size until it's rotated.
#mdbox_rotate_size = 2M
# Maximum dbox file age until it's rotated. Typically in days. Day begins
# from midnight, so 1d = today, 2d = yesterday, etc. 0 = check disabled.
#mdbox_rotate_interval = 0
# When creating new mdbox files, immediately preallocate their size to
# mdbox_rotate_size. This setting currently works only in Linux with some
# filesystems (ext4, xfs).
#mdbox_preallocate_space = no
##
## Mail attachments
##
# sdbox and mdbox support saving mail attachments to external files, which
# also allows single instance storage for them. Other backends don't support
# this for now.
# Directory root where to store mail attachments. Disabled, if empty.
#mail_attachment_dir =
# Attachments smaller than this aren't saved externally. It's also possible to
# write a plugin to disable saving specific attachments externally.
#mail_attachment_min_size = 128k
# Filesystem backend to use for saving attachments:
# posix : No SiS done by Dovecot (but this might help FS's own deduplication)
# sis posix : SiS with immediate byte-by-byte comparison during saving
# sis-queue posix : SiS with delayed comparison and deduplication
#mail_attachment_fs = sis posix
# Hash format to use in attachment filenames. You can add any text and
# variables: %{md4}, %{md5}, %{sha1}, %{sha256}, %{sha512}, %{size}.
# Variables can be truncated, e.g. %{sha256:80} returns only first 80 bits
#mail_attachment_hash = %{sha1}

127
dovecot/10-master.conf Normal file
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@ -0,0 +1,127 @@
#default_process_limit = 100
#default_client_limit = 1000
# Default VSZ (virtual memory size) limit for service processes. This is mainly
# intended to catch and kill processes that leak memory before they eat up
# everything.
#default_vsz_limit = 256M
# Login user is internally used by login processes. This is the most untrusted
# user in Dovecot system. It shouldn't have access to anything at all.
#default_login_user = dovenull
# Internal user is used by unprivileged processes. It should be separate from
# login user, so that login processes can't disturb other processes.
#default_internal_user = dovecot
service imap-login {
inet_listener imap {
#port = 143
}
inet_listener imaps {
#port = 993
#ssl = yes
}
# Number of connections to handle before starting a new process. Typically
# the only useful values are 0 (unlimited) or 1. 1 is more secure, but 0
# is faster. <doc/wiki/LoginProcess.txt>
#service_count = 1
# Number of processes to always keep waiting for more connections.
#process_min_avail = 0
# If you set service_count=0, you probably need to grow this.
#vsz_limit = $default_vsz_limit
}
service pop3-login {
inet_listener pop3 {
#port = 110
}
inet_listener pop3s {
#port = 995
#ssl = yes
}
}
service lmtp {
unix_listener lmtp {
#mode = 0666
}
# 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 = 0666
user = docker
group = docker
}
unix_listener auth-master {
mode = 0600
user = docker
group = docker
}
# Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth {
mode = 0666
user = docker
group = docker
}
# 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 =
}
}

58
dovecot/10-ssl.conf Normal file
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@ -0,0 +1,58 @@
##
## SSL settings
##
# SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
#ssl = yes
# PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
# dropping root privileges, so keep the key file unreadable by anyone but
# root. Included doc/mkcert.sh can be used to easily generate self-signed
# certificate, just make sure to update the domains in dovecot-openssl.cnf
ssl_cert = </etc/dovecot/dovecot.pem
ssl_key = </etc/dovecot/private/dovecot.pem
# If key file is password protected, give the password here. Alternatively
# give it when starting dovecot with -p parameter. Since this file is often
# world-readable, you may want to place this setting instead to a different
# root owned 0600 file by using ssl_key_password = <path.
#ssl_key_password =
# PEM encoded trusted certificate authority. Set this only if you intend to use
# ssl_verify_client_cert=yes. The file should contain the CA certificate(s)
# followed by the matching CRL(s). (e.g. ssl_ca = </etc/ssl/certs/ca.pem)
#ssl_ca =
# Require that CRL check succeeds for client certificates.
#ssl_require_crl = yes
# Directory and/or file for trusted SSL CA certificates. These are used only
# when Dovecot needs to act as an SSL client (e.g. imapc backend). The
# directory is usually /etc/ssl/certs in Debian-based systems and the file is
# /etc/pki/tls/cert.pem in RedHat-based systems.
#ssl_client_ca_dir =
#ssl_client_ca_file =
# Request client to send a certificate. If you also want to require it, set
# auth_ssl_require_client_cert=yes in auth section.
#ssl_verify_client_cert = no
# Which field from certificate to use for username. commonName and
# x500UniqueIdentifier are the usual choices. You'll also need to set
# auth_ssl_username_from_cert=yes.
#ssl_cert_username_field = commonName
# DH parameters length to use.
#ssl_dh_parameters_length = 1024
# SSL protocols to use
#ssl_protocols = !SSLv2
# SSL ciphers to use
#ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL
# Prefer the server's order of ciphers over client's.
#ssl_prefer_server_ciphers = no
# SSL crypto device to use, for valid values run "openssl engine"
#ssl_crypto_device =

50
dovecot/15-mailboxes.conf Normal file
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@ -0,0 +1,50 @@
##
## 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 Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Trash {
auto = subscribe
special_use = \Trash
}
# For \Sent mailboxes there are two widely used names. We'll mark both of
# them as \Sent. User typically deletes one of them if duplicates are created.
mailbox Sent {
auto = subscribe
special_use = \Sent
}
# mailbox "Sent Messages" {
# special_use = \Sent
# }
# 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
#}
}

21
dovecot/auth-passwdfile.inc Normal file
View file

@ -0,0 +1,21 @@
# Authentication for passwd-file users. Included from 10-auth.conf.
#
# passwd-like file with specified location.
# <doc/wiki/AuthDatabase.PasswdFile.txt>
passdb {
driver = passwd-file
args = scheme=CRYPT username_format=%u /etc/dovecot/userdb
}
userdb {
driver = passwd-file
args = username_format=%u /etc/dovecot/userdb
# Default fields that can be overridden by passwd-file
#default_fields = quota_rule=*:storage=1G
default_fields = uid=docker gid=docker home=/var/mail/%d/%u
# Override fields from passwd-file
#override_fields = home=/home/virtual/%u
}

102
dovecot/dovecot.conf Normal file
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@ -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 /etc/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 <instance_name> to select which instance is used (an alternative
# to -c <config_path>). 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::<name>".
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

5
postfix/main.cf
View file

@ -40,11 +40,10 @@ smtpd_tls_exclude_ciphers = aNULL, LOW, EXP, MEDIUM, ADH, AECDH, MD5, DSS, ECDSA
# SASL
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = smtpd
smtpd_sasl_type = cyrus
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
cyrus_sasl_config_path = /etc/postfix/sasl
broken_sasl_auth_clients = yes
# Mail directory

3
postfix/master.cf
View file

@ -15,9 +15,10 @@ submission inet n - n - - smtpd
-o syslog_name=postfix/submission
-o smtpd_tls_security_level=encrypt
-o smtpd_sasl_auth_enable=yes
-o smtpd_sasl_type=dovecot
-o smtpd_sasl_path=private/auth
-o smtpd_reject_unlisted_recipient=no
-o smtpd_sasl_authenticated_header=yes
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
-o milter_macro_daemon_name=ORIGINATING

4
postfix/sasl/smtpd.conf
View file

@ -1,4 +0,0 @@
pwcheck_method: auxprop
auxprop_plugin: sasldb
mech_list: PLAIN LOGIN CRAM-MD5 DIGEST-MD5
log_level: 7

185
start-mailserver.sh
View file

@ -11,8 +11,20 @@ if [ -f /tmp/postfix/accounts.cf ]; then
# Checking that /tmp/postfix/accounts.cf ends with a newline
sed -i -e '$a\' /tmp/postfix/accounts.cf
# Configuring Dovecot
echo -n > /etc/dovecot/userdb
chown dovecot:dovecot /etc/dovecot/userdb
chmod 640 /etc/dovecot/userdb
cp -a /usr/share/dovecot/protocols.d /etc/dovecot/
# Disable pop3 (it will be eventually enabled later in the script, if requested)
mv /etc/dovecot/protocols.d/pop3d.protocol /etc/dovecot/protocols.d/pop3d.protocol.disab
sed -i -e 's/#ssl = yes/ssl = yes/g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's/#port = 993/port = 993/g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's/#port = 995/port = 995/g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's/#ssl = yes/ssl = required/g' /etc/dovecot/conf.d/10-ssl.conf
# Creating users
# pass is encrypted
while IFS=$'|' read login pass
do
# Setting variables for better readability
@ -21,22 +33,22 @@ if [ -f /tmp/postfix/accounts.cf ]; then
# Let's go!
echo "user '${user}' for domain '${domain}' with password '********'"
echo "${login} ${domain}/${user}/" >> /etc/postfix/vmailbox
/usr/sbin/userdb ${login} set uid=5000 gid=5000 home=/var/mail/${domain}/${user} mail=/var/mail/${domain}/${user}
echo "${pass}" | userdbpw -md5 | userdb ${login} set systempw
echo "${pass}" | saslpasswd2 -p -c -u ${domain} ${login}
# user database for dovecot has the following format:
# user:password:uid:gid:(gecos):home:(shell):extra_fields
# Example : ${login}:${pass}:5000:5000::/var/mail/${domain}/${user}::userdb_mail=maildir:/var/mail/${domain}/${user}
echo "${login}:${pass}:5000:5000::/var/mail/${domain}/${user}::" >> /etc/dovecot/userdb
mkdir -p /var/mail/${domain}
if [ ! -d "/var/mail/${domain}/${user}" ]; then
maildirmake "/var/mail/${domain}/${user}"
maildirmake "/var/mail/${domain}/${user}/.Sent"
maildirmake "/var/mail/${domain}/${user}/.Trash"
maildirmake "/var/mail/${domain}/${user}/.Drafts"
echo -e "INBOX\nINBOX.Sent\nINBOX.Trash\nInbox.Drafts" >> "/var/mail/${domain}/${user}/courierimapsubscribed"
maildirmake.dovecot "/var/mail/${domain}/${user}"
maildirmake.dovecot "/var/mail/${domain}/${user}/.Sent"
maildirmake.dovecot "/var/mail/${domain}/${user}/.Trash"
maildirmake.dovecot "/var/mail/${domain}/${user}/.Drafts"
echo -e "INBOX\nSent\nTrash\nDrafts" >> "/var/mail/${domain}/${user}/subscriptions"
touch "/var/mail/${domain}/${user}/.Sent/maildirfolder"
fi
echo ${domain} >> /tmp/vhost.tmp
done < /tmp/postfix/accounts.cf
makeuserdb
else
echo "==> Warning: '/tmp/postfix/accounts.cf' is not provided. No mail account created."
fi
@ -47,8 +59,10 @@ if [ -f /tmp/postfix/virtual ]; then
while IFS=$' ' read from to
do
# Setting variables for better readability
uname=$(echo ${from} | cut -d @ -f1)
domain=$(echo ${from} | cut -d @ -f2)
echo ${domain} >> /tmp/vhost.tmp
# if they are equal it means the line looks like: "user1 other@domain.tld"
test "$uname" != "$domain" && echo ${domain} >> /tmp/vhost.tmp
done < /tmp/postfix/virtual
else
echo "==> Warning: '/tmp/postfix/virtual' is not provided. No mail alias created."
@ -63,39 +77,46 @@ touch /etc/postfix/vmailbox && postmap /etc/postfix/vmailbox
touch /etc/postfix/virtual && postmap /etc/postfix/virtual
# DKIM
grep -vE '^(\s*$|#)' /etc/postfix/vhost | while read domainname; do
mkdir -p /etc/opendkim/keys/$domainname
if [ ! -f "/etc/opendkim/keys/$domainname/mail.private" ]; then
echo "Creating DKIM private key /etc/opendkim/keys/$domainname/mail.private"
pushd /etc/opendkim/keys/$domainname
opendkim-genkey --subdomains --domain=$domainname --selector=mail
popd
echo ""
echo "DKIM PUBLIC KEY ################################################################"
cat /etc/opendkim/keys/$domainname/mail.txt
echo "################################################################################"
fi
# Write to KeyTable if necessary
keytableentry="mail._domainkey.$domainname $domainname:mail:/etc/opendkim/keys/$domainname/mail.private"
if [ ! -f "/etc/opendkim/KeyTable" ]; then
echo "Creating DKIM KeyTable"
echo "mail._domainkey.$domainname $domainname:mail:/etc/opendkim/keys/$domainname/mail.private" > /etc/opendkim/KeyTable
else
if ! grep -q "$keytableentry" "/etc/opendkim/KeyTable" ; then
echo $keytableentry >> /etc/opendkim/KeyTable
# Check if keys are already available
if [ -e "/tmp/postfix/opendkim/KeyTable" ]; then
mkdir -p /etc/opendkim
cp -a /tmp/postfix/opendkim/* /etc/opendkim/
echo "DKIM keys added for : `ls -C /etc/opendkim/keys/`"
else
grep -vE '^(\s*$|#)' /etc/postfix/vhost | while read domainname; do
mkdir -p /etc/opendkim/keys/$domainname
if [ ! -f "/etc/opendkim/keys/$domainname/mail.private" ]; then
echo "Creating DKIM private key /etc/opendkim/keys/$domainname/mail.private"
pushd /etc/opendkim/keys/$domainname
opendkim-genkey --subdomains --domain=$domainname --selector=mail
popd
echo ""
echo "DKIM PUBLIC KEY ################################################################"
cat /etc/opendkim/keys/$domainname/mail.txt
echo "################################################################################"
fi
fi
# Write to SigningTable if necessary
signingtableentry="*@$domainname mail._domainkey.$domainname"
if [ ! -f "/etc/opendkim/SigningTable" ]; then
echo "Creating DKIM SigningTable"
echo "*@$domainname mail._domainkey.$domainname" > /etc/opendkim/SigningTable
else
if ! grep -q "$signingtableentry" "/etc/opendkim/SigningTable" ; then
echo $signingtableentry >> /etc/opendkim/SigningTable
# Write to KeyTable if necessary
keytableentry="mail._domainkey.$domainname $domainname:mail:/etc/opendkim/keys/$domainname/mail.private"
if [ ! -f "/etc/opendkim/KeyTable" ]; then
echo "Creating DKIM KeyTable"
echo "mail._domainkey.$domainname $domainname:mail:/etc/opendkim/keys/$domainname/mail.private" > /etc/opendkim/KeyTable
else
if ! grep -q "$keytableentry" "/etc/opendkim/KeyTable" ; then
echo $keytableentry >> /etc/opendkim/KeyTable
fi
fi
fi
done
# Write to SigningTable if necessary
signingtableentry="*@$domainname mail._domainkey.$domainname"
if [ ! -f "/etc/opendkim/SigningTable" ]; then
echo "Creating DKIM SigningTable"
echo "*@$domainname mail._domainkey.$domainname" > /etc/opendkim/SigningTable
else
if ! grep -q "$signingtableentry" "/etc/opendkim/SigningTable" ; then
echo $signingtableentry >> /etc/opendkim/SigningTable
fi
fi
done
fi
echo "Changing permissions on /etc/opendkim"
# chown entire directory
@ -104,7 +125,7 @@ chown -R opendkim:opendkim /etc/opendkim/
chmod -R 0700 /etc/opendkim/keys/
# DMARC
# if ther is no AuthservID create it
# if there is no AuthservID create it
if [ `cat /etc/opendmarc.conf | grep -w AuthservID | wc -l` -eq 0 ]; then
echo "AuthservID $(hostname)" >> /etc/opendmarc.conf
fi
@ -125,20 +146,15 @@ case $DMS_SSL in
&& [ -e "/etc/letsencrypt/live/$(hostname)/privkey.pem" ]; then
echo "Adding $(hostname) SSL certificate"
# create combined.pem from (cert|chain|privkey).pem with eol after each .pem
sed -e '$a\' -s "/etc/letsencrypt/live/$(hostname)/{cert,chain,privkey}.pem" > "/etc/letsencrypt/live/$(hostname)/combined.pem"
sed -e '$a\' -s /etc/letsencrypt/live/$(hostname)/{cert,chain,privkey}.pem > /etc/letsencrypt/live/$(hostname)/combined.pem
# Postfix configuration
sed -i -r 's/smtpd_tls_cert_file=\/etc\/ssl\/certs\/ssl-cert-snakeoil.pem/smtpd_tls_cert_file=\/etc\/letsencrypt\/live\/'$(hostname)'\/fullchain.pem/g' /etc/postfix/main.cf
sed -i -r 's/smtpd_tls_key_file=\/etc\/ssl\/private\/ssl-cert-snakeoil.key/smtpd_tls_key_file=\/etc\/letsencrypt\/live\/'$(hostname)'\/privkey.pem/g' /etc/postfix/main.cf
# Courier configuration
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/imapd.pem/TLS_CERTFILE=\/etc\/letsencrypt\/live\/'$(hostname)'\/combined.pem/g' /etc/courier/imapd-ssl
# POP3 courier configuration
sed -i -r 's/POP3_TLS_REQUIRED=0/POP3_TLS_REQUIRED=1/g' /etc/courier/pop3d-ssl
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/pop3d.pem/TLS_CERTFILE=\/etc\/letsencrypt\/live\/'$(hostname)'\/combined.pem/g' /etc/courier/pop3d-ssl
# needed to support gmail
sed -i -r 's/TLS_TRUSTCERTS=\/etc\/ssl\/certs/TLS_TRUSTCERTS=\/etc\/letsencrypt\/live\/'$(hostname)'\/fullchain.pem/g' /etc/courier/pop3d-ssl
# Dovecot configuration
sed -i -e 's/ssl_cert = <\/etc\/dovecot\/dovecot\.pem/ssl_cert = <\/etc\/letsencrypt\/live\/'$(hostname)'\/fullchain\.pem/g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's/ssl_key = <\/etc\/dovecot\/private\/dovecot\.pem/ssl_key = <\/etc\/letsencrypt\/live\/'$(hostname)'\/privkey\.pem/g' /etc/dovecot/conf.d/10-ssl.conf
echo "SSL configured with letsencrypt certificates"
@ -156,12 +172,9 @@ case $DMS_SSL in
sed -i -r 's/smtpd_tls_cert_file=\/etc\/ssl\/certs\/ssl-cert-snakeoil.pem/smtpd_tls_cert_file=\/etc\/postfix\/ssl\/'$(hostname)'-full.pem/g' /etc/postfix/main.cf
sed -i -r 's/smtpd_tls_key_file=\/etc\/ssl\/private\/ssl-cert-snakeoil.key/smtpd_tls_key_file=\/etc\/postfix\/ssl\/'$(hostname)'-full.pem/g' /etc/postfix/main.cf
# Courier configuration
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/imapd.pem/TLS_CERTFILE=\/etc\/postfix\/ssl\/'$(hostname)'-full.pem/g' /etc/courier/imapd-ssl
# POP3 courier configuration
sed -i -r 's/POP3_TLS_REQUIRED=0/POP3_TLS_REQUIRED=1/g' /etc/courier/pop3d-ssl
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/pop3d.pem/TLS_CERTFILE=\/etc\/postfix\/ssl\/'$(hostname)'-full.pem/g' /etc/courier/pop3d-ssl
# Dovecot configuration
sed -i -e 's/ssl_cert = <\/etc\/dovecot\/dovecot\.pem/ssl_cert = <\/etc\/postfix\/ssl\/'$(hostname)'-full\.pem/g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's/ssl_key = <\/etc\/dovecot\/private\/dovecot\.pem/ssl_key = <\/etc\/postfix\/ssl\/'$(hostname)'-full\.pem/g' /etc/dovecot/conf.d/10-ssl.conf
echo "SSL configured with CA signed/custom certificates"
@ -178,6 +191,8 @@ case $DMS_SSL in
mkdir -p /etc/postfix/ssl
cp "/tmp/postfix/ssl/$(hostname)-cert.pem" /etc/postfix/ssl
cp "/tmp/postfix/ssl/$(hostname)-key.pem" /etc/postfix/ssl
# Force permission on key file
chmod 600 /etc/postfix/ssl/$(hostname)-key.pem
cp "/tmp/postfix/ssl/$(hostname)-combined.pem" /etc/postfix/ssl
cp /tmp/postfix/ssl/demoCA/cacert.pem /etc/postfix/ssl
@ -188,12 +203,9 @@ case $DMS_SSL in
sed -i -r 's/#smtp_tls_CAfile=/smtp_tls_CAfile=\/etc\/postfix\/ssl\/cacert.pem/g' /etc/postfix/main.cf
ln -s /etc/postfix/ssl/cacert.pem "/etc/ssl/certs/cacert-$(hostname).pem"
# Courier configuration
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/imapd.pem/TLS_CERTFILE=\/etc\/postfix\/ssl\/'$(hostname)'-combined.pem/g' /etc/courier/imapd-ssl
# POP3 courier configuration
sed -i -r 's/POP3_TLS_REQUIRED=0/POP3_TLS_REQUIRED=1/g' /etc/courier/pop3d-ssl
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/pop3d.pem/TLS_CERTFILE=\/etc\/postfix\/ssl\/'$(hostname)'-combined.pem/g' /etc/courier/pop3d-ssl
# Dovecot configuration
sed -i -e 's/ssl_cert = <\/etc\/dovecot\/dovecot\.pem/ssl_cert = <\/etc\/postfix\/ssl\/'$(hostname)'-combined\.pem/g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's/ssl_key = <\/etc\/dovecot\/private\/dovecot\.pem/ssl_key = <\/etc\/postfix\/ssl\/'$(hostname)'-key\.pem/g' /etc/dovecot/conf.d/10-ssl.conf
echo "SSL configured with self-signed/custom certificates"
@ -224,7 +236,6 @@ fi
echo "Fixing permissions"
chown -R 5000:5000 /var/mail
chown postfix.sasl /etc/sasldb2
echo "Creating /etc/mailname"
echo $(hostname -d) > /etc/mailname
@ -237,13 +248,36 @@ test -e /tmp/spamassassin/rules.cf && cp /tmp/spamassassin/rules.cf /etc/spamass
echo "Configuring fail2ban"
# enable filters
awk 'BEGIN{unit=0}{if ($1=="[postfix]" || $1=="[couriersmtp]" || $1=="[courierauth]" || $1=="[sasl]") {unit=1;}
awk 'BEGIN{unit=0}{if ($1=="[postfix]" || $1=="[dovecot]" || $1=="[sasl]") {unit=1;}
if ($1=="enabled" && unit==1) $3="true";
else if ($1=="logpath" && unit==1) $3="/var/log/mail/mail.log";
print;
if (unit==1 && $1~/\[/ && $1!~/postfix|couriersmtp|courierauth|sasl/) unit=0;
if (unit==1 && $1~/\[/ && $1!~/postfix|dovecot|sasl/) unit=0;
}' /etc/fail2ban/jail.conf > /tmp/jail.conf.new && mv /tmp/jail.conf.new /etc/fail2ban/jail.conf && rm -f /tmp/jail.conf.new
cat > /etc/fail2ban/filter.d/dovecot.conf << _EOF_
# Fail2Ban filter Dovecot authentication and pop3/imap server
#
[INCLUDES]
before = common.conf
[Definition]
_daemon = (auth|dovecot(-auth)?|auth-worker)
failregex = ^%(__prefix_line)s(pam_unix(\(dovecot:auth\))?:)?\s+authentication failure; logname=\S* uid=\S* euid=\S* tty=dovecot ruser=\S* rhost=<HOST>(\s+user=\S*)?\s*$
^%(__prefix_line)s(pop3|imap)-login: (Info: )?(Aborted login|Disconnected)(: Inactivity)? \(((no auth attempts|auth failed, \d+ attempts)( in \d+ secs)?|tried to use (disabled|disallowed) \S+ auth)\):( user=<\S*>,)?( method=\S+,)? rip=<HOST>, lip=(\d{1,3}\.){3}\d{1,3}(, session=<\w+>)?(, TLS( handshaking)?(: Disconnected)?)?\s*$
^%(__prefix_line)s(Info|dovecot: auth\(default\)): pam\(\S+,<HOST>\): pam_authenticate\(\) failed: (User not known to the underlying authentication module: \d+ Time\(s\)|Authentication failure \(password mismatch\?\))\s*$
^\s.*passwd-file\(\S*,<HOST>\): unknown user.*$
(?: pop3-login|imap-login): .*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(?P<host>\S*),.*
## ^%(__prefix_line)spasswd-file\(\S*,<HOST>\): unknown user.*$
ignoreregex =
_EOF_
# increase ban time and find time to 3h
sed -i "/^bantime *=/c\bantime = 10800" /etc/fail2ban/jail.conf
sed -i "/^findtime *=/c\findtime = 10800" /etc/fail2ban/jail.conf
@ -268,19 +302,18 @@ sed -i -r 's|/var/log/mail|/var/log/mail/mail|g' /etc/logrotate.d/rsyslog
echo "Starting daemons"
cron
/etc/init.d/rsyslog start
/etc/init.d/saslauthd start
##/etc/init.d/saslauthd start
if [ "$SMTP_ONLY" != 1 ]; then
/etc/init.d/courier-authdaemon start
/etc/init.d/courier-imap start
/etc/init.d/courier-imap-ssl start
# Here we are starting sasl and imap, not pop3 because it's disabled by default
echo " * Starting dovecot services"
/usr/sbin/dovecot -F -c /etc/dovecot/dovecot.conf &
fi
if [ "$ENABLE_POP3" = 1 -a "$SMTP_ONLY" != 1 ]; then
echo "Starting POP3 services"
/etc/init.d/courier-pop start
/etc/init.d/courier-pop-ssl start
mv /etc/dovecot/protocols.d/pop3d.protocol.disab /etc/dovecot/protocols.d/pop3d.protocol
/usr/sbin/dovecot reload
fi
/etc/init.d/spamassassin start
@ -295,8 +328,8 @@ if [ "$ENABLE_FAIL2BAN" = 1 ]; then
/etc/init.d/fail2ban start
fi
echo "Listing SASL users"
sasldblistusers2
echo "Listing users"
/usr/sbin/dovecot user '*'
echo "Starting..."
tail -f /var/log/mail/mail.log