diff --git a/Dockerfile b/Dockerfile index 4c893e81..ad0de178 100644 --- a/Dockerfile +++ b/Dockerfile @@ -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 diff --git a/LICENCE b/LICENSE similarity index 100% rename from LICENCE rename to LICENSE diff --git a/Makefile b/Makefile index 6ea1a4d4..acb6d581 100644 --- a/Makefile +++ b/Makefile @@ -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) . diff --git a/README.md b/README.md index acb30ea7..f9c89024 100644 --- a/README.md +++ b/README.md @@ -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 diff --git a/dovecot/10-auth.conf b/dovecot/10-auth.conf new file mode 100644 index 00000000..bfec05ef --- /dev/null +++ b/dovecot/10-auth.conf @@ -0,0 +1,128 @@ +## +## Authentication processes +## + +# Disable LOGIN command and all other plaintext authentications unless +# SSL/TLS is used (LOGINDISABLED capability). Note that if the remote IP +# matches the local IP (ie. you're connecting from the same computer), the +# connection is considered secure and plaintext authentication is allowed. +# See also ssl=required setting. +#disable_plaintext_auth = yes + +# Authentication cache size (e.g. 10M). 0 means it's disabled. Note that +# bsdauth, PAM and vpopmail require cache_key to be set for caching to be used. +#auth_cache_size = 0 +# Time to live for cached data. After TTL expires the cached record is no +# longer used, *except* if the main database lookup returns internal failure. +# We also try to handle password changes automatically: If user's previous +# authentication was successful, but this one wasn't, the cache isn't used. +# For now this works only with plaintext authentication. +#auth_cache_ttl = 1 hour +# TTL for negative hits (user not found, password mismatch). +# 0 disables caching them completely. +#auth_cache_negative_ttl = 1 hour + +# Space separated list of realms for SASL authentication mechanisms that need +# them. You can leave it empty if you don't want to support multiple realms. +# Many clients simply use the first one listed here, so keep the default realm +# first. +#auth_realms = + +# Default realm/domain to use if none was specified. This is used for both +# SASL realms and appending @domain to username in plaintext logins. +#auth_default_realm = + +# List of allowed characters in username. If the user-given username contains +# a character not listed in here, the login automatically fails. This is just +# an extra check to make sure user can't exploit any potential quote escaping +# vulnerabilities with SQL/LDAP databases. If you want to allow all characters, +# set this value to empty. +#auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ + +# Username character translations before it's looked up from databases. The +# value contains series of from -> to characters. For example "#@/@" means +# that '#' and '/' characters are translated to '@'. +#auth_username_translation = + +# Username formatting before it's looked up from databases. You can use +# the standard variables here, eg. %Lu would lowercase the username, %n would +# drop away the domain if it was given, or "%n-AT-%d" would change the '@' into +# "-AT-". This translation is done after auth_username_translation changes. +#auth_username_format = %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 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. +# +# +# +# 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.inc +#!include auth-checkpassword.conf.ext +#!include auth-vpopmail.conf.ext +#!include auth-static.conf.ext diff --git a/dovecot/10-logging.conf b/dovecot/10-logging.conf new file mode 100644 index 00000000..ddc45cef --- /dev/null +++ b/dovecot/10-logging.conf @@ -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: %$ diff --git a/dovecot/10-mail.conf b/dovecot/10-mail.conf new file mode 100644 index 00000000..da0a13e9 --- /dev/null +++ b/dovecot/10-mail.conf @@ -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 +# +# +# +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. +#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. +#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 = 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= 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 .lock file. This is the oldest and most NFS-safe +# solution. If you want to use /var/mail/ like directory, the users +# will need write access to that directory. +# dotlock_try: Same as dotlock, but if it fails because of permissions or +# because there isn't enough disk space, just skip it. +# fcntl : Use this if possible. Works with NFS too if lockd is used. +# flock : May not exist in all systems. Doesn't work with NFS. +# lockf : May not exist in all systems. Doesn't work with NFS. +# +# You can use multiple locking methods; if you do the order they're declared +# in is important to avoid deadlocks if other MTAs/MUAs are using multiple +# locking methods as well. Some operating systems don't allow using some of +# them simultaneously. +# +# The Debian value for mbox_write_locks differs from upstream Dovecot. It is +# changed to be compliant with Debian Policy (section 11.6) for NFS safety. +# Dovecot: mbox_write_locks = dotlock fcntl +# Debian: mbox_write_locks = fcntl dotlock +# +#mbox_read_locks = fcntl +#mbox_write_locks = fcntl dotlock + +# Maximum time to wait for lock (all of them) before aborting. +#mbox_lock_timeout = 5 mins + +# If dotlock exists but the mailbox isn't modified in any way, override the +# lock file after this much time. +#mbox_dotlock_change_timeout = 2 mins + +# When mbox changes unexpectedly we have to fully read it to find out what +# changed. If the mbox is large this can take a long time. Since the change +# is usually just a newly appended mail, it'd be faster to simply read the +# new mails. If this setting is enabled, Dovecot does this but still safely +# fallbacks to re-reading the whole mbox file whenever something in mbox isn't +# how it's expected to be. The only real downside to this setting is that if +# some other MUA changes message flags, Dovecot doesn't notice it immediately. +# Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK +# commands. +#mbox_dirty_syncs = yes + +# Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE, +# EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored. +#mbox_very_dirty_syncs = no + +# Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK +# commands and when closing the mailbox). This is especially useful for POP3 +# where clients often delete all mails. The downside is that our changes +# aren't immediately visible to other MUAs. +#mbox_lazy_writes = yes + +# If mbox size is smaller than this (e.g. 100k), don't write index files. +# If an index file already exists it's still read, just not updated. +#mbox_min_index_size = 0 + +# Mail header selection algorithm to use for MD5 POP3 UIDLs when +# pop3_uidl_format=%m. For backwards compatibility we use apop3d inspired +# algorithm, but it fails if the first Received: header isn't unique in all +# mails. An alternative algorithm is "all" that selects all headers. +#mbox_md5 = apop3d + +## +## mdbox-specific settings +## + +# Maximum dbox file size until it's rotated. +#mdbox_rotate_size = 2M + +# Maximum dbox file age until it's rotated. Typically in days. Day begins +# from midnight, so 1d = today, 2d = yesterday, etc. 0 = check disabled. +#mdbox_rotate_interval = 0 + +# When creating new mdbox files, immediately preallocate their size to +# mdbox_rotate_size. This setting currently works only in Linux with some +# filesystems (ext4, xfs). +#mdbox_preallocate_space = no + +## +## Mail attachments +## + +# sdbox and mdbox support saving mail attachments to external files, which +# also allows single instance storage for them. Other backends don't support +# this for now. + +# Directory root where to store mail attachments. Disabled, if empty. +#mail_attachment_dir = + +# Attachments smaller than this aren't saved externally. It's also possible to +# write a plugin to disable saving specific attachments externally. +#mail_attachment_min_size = 128k + +# Filesystem backend to use for saving attachments: +# posix : No SiS done by Dovecot (but this might help FS's own deduplication) +# sis posix : SiS with immediate byte-by-byte comparison during saving +# sis-queue posix : SiS with delayed comparison and deduplication +#mail_attachment_fs = sis posix + +# Hash format to use in attachment filenames. You can add any text and +# variables: %{md4}, %{md5}, %{sha1}, %{sha256}, %{sha512}, %{size}. +# Variables can be truncated, e.g. %{sha256:80} returns only first 80 bits +#mail_attachment_hash = %{sha1} diff --git a/dovecot/10-master.conf b/dovecot/10-master.conf new file mode 100644 index 00000000..48707827 --- /dev/null +++ b/dovecot/10-master.conf @@ -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. + #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 = + } +} diff --git a/dovecot/10-ssl.conf b/dovecot/10-ssl.conf new file mode 100644 index 00000000..8873bc25 --- /dev/null +++ b/dovecot/10-ssl.conf @@ -0,0 +1,58 @@ +## +## 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 = + +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 +} diff --git a/dovecot/dovecot.conf b/dovecot/dovecot.conf new file mode 100644 index 00000000..5a35e5fe --- /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 /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 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 diff --git a/postfix/main.cf b/postfix/main.cf index 593b6394..c1451c46 100644 --- a/postfix/main.cf +++ b/postfix/main.cf @@ -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 = $myhostname -cyrus_sasl_config_path = /etc/postfix/sasl broken_sasl_auth_clients = yes # Mail directory diff --git a/postfix/master.cf b/postfix/master.cf index b2fe0de9..a8078d5b 100644 --- a/postfix/master.cf +++ b/postfix/master.cf @@ -15,9 +15,10 @@ submission inet n - n - - smtpd -o syslog_name=postfix/submission -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes + -o smtpd_sasl_type=dovecot + -o smtpd_sasl_path=private/auth -o smtpd_reject_unlisted_recipient=no -o smtpd_sasl_authenticated_header=yes - -o smtpd_relay_restrictions=permit_sasl_authenticated,reject -o smtpd_client_restrictions=permit_sasl_authenticated,reject -o smtpd_relay_restrictions=permit_sasl_authenticated,reject -o milter_macro_daemon_name=ORIGINATING diff --git a/postfix/sasl/smtpd.conf b/postfix/sasl/smtpd.conf deleted file mode 100644 index f02eb91d..00000000 --- a/postfix/sasl/smtpd.conf +++ /dev/null @@ -1,4 +0,0 @@ -pwcheck_method: auxprop -auxprop_plugin: sasldb -mech_list: PLAIN LOGIN CRAM-MD5 DIGEST-MD5 -log_level: 7 diff --git a/start-mailserver.sh b/start-mailserver.sh index 08cb4b25..04030b83 100644 --- a/start-mailserver.sh +++ b/start-mailserver.sh @@ -11,8 +11,20 @@ if [ -f /tmp/postfix/accounts.cf ]; then # Checking that /tmp/postfix/accounts.cf ends with a newline sed -i -e '$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=(\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=, lip=(\d{1,3}\.){3}\d{1,3}(, session=<\w+>)?(, TLS( handshaking)?(: Disconnected)?)?\s*$ + ^%(__prefix_line)s(Info|dovecot: auth\(default\)): pam\(\S+,\): pam_authenticate\(\) failed: (User not known to the underlying authentication module: \d+ Time\(s\)|Authentication failure \(password mismatch\?\))\s*$ + ^\s.*passwd-file\(\S*,\): unknown user.*$ + (?: pop3-login|imap-login): .*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(?P\S*),.* + +## ^%(__prefix_line)spasswd-file\(\S*,\): 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