From: Ralf Jung Date: Sat, 7 Apr 2018 18:20:47 +0000 (+0200) Subject: tweak email X-Git-Url: https://git.ralfj.de/ansible.git/commitdiff_plain/6d75c873754f955e7bb8d08b653131a0348db088?ds=inline tweak email --- diff --git a/email.yml b/email.yml index a4bb8e8..91f02f9 100644 --- a/email.yml +++ b/email.yml @@ -1,4 +1,8 @@ -- hosts: all +- hosts: all:!base_only roles: - postfix - journalwatch + tasks: + # some basic security stuff that relies on working email + - name: install apticron, fail2ban + apt: name=apticron,fail2ban state=latest diff --git a/roles/postfix/tasks/main.yml b/roles/postfix/tasks/main.yml index 69f8317..07c344e 100644 --- a/roles/postfix/tasks/main.yml +++ b/roles/postfix/tasks/main.yml @@ -1,10 +1,13 @@ - name: install postfix apt: name=postfix,bsd-mailx state=latest -- name: install postfix main.cf +- name: install postfix config register: config_main template: - src: templates/main.cf - dest: /etc/postfix/main.cf + src: templates/{{ item }} + dest: /etc/postfix/{{ item }} + with_items: + - main.cf + - master.cf - name: reload postfix service: name=postfix state=restarted enabled=yes when: config_main.changed diff --git a/roles/postfix/templates/main.cf b/roles/postfix/templates/main.cf index ac40750..4085955 100644 --- a/roles/postfix/templates/main.cf +++ b/roles/postfix/templates/main.cf @@ -1,8 +1,6 @@ # local delivery: aliases only alias_maps = hash:/etc/aliases local_recipient_maps = $alias_maps -# explicitly UNSET relay domains to prevent implicit domains -relay_domains = # only consider ourselves local mynetworks_style = host {% if postfix.mynetworks is defined %} @@ -23,10 +21,24 @@ smtpd_tls_mandatory_ciphers = high smtp_tls_mandatory_protocols = !SSLv2 !SSLv3 smtp_tls_ciphers = low smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache +smtp_tls_loglevel = 1 +{% if not(postfix.relay_host is defined) %} smtp_tls_security_level = dane smtp_dns_support_level = dnssec -smtp_tls_loglevel = 1 +{% endif %} + +{% if postfix.relay_host is defined %} +# Relay everything +default_transport = smtp:{{ postfix.relay_host }} +{% if postfix.relay_client_cert is defined %} +# Enforce relay encryption +smtp_tls_cert_file=$config_directory/{{ postfix.relay_client_cert }}.crt +smtp_tls_key_file=$config_directory/{{ postfix.relay_client_cert }}.key +smtp_tls_security_level = encrypt +{% endif %} +{% endif %} +{% if postfix.postscreen is defined and postfix.postscreen %} # postscreen config postscreen_dnsbl_threshold = 3 postscreen_dnsbl_whitelist_threshold = -2 @@ -39,18 +51,20 @@ postscreen_dnsbl_action = enforce postscreen_pipelining_enable = yes postscreen_non_smtp_command_enable = yes postscreen_bare_newline_enable = yes +{% endif %} + # control relay access smtpd_relay_restrictions = permit_mynetworks, permit_tls_clientcerts, - # allow nobody else - defer_unauth_destination + # allow nobody else + defer_unauth_destination # spam-protection restrictions smtpd_helo_required = yes smtpd_recipient_restrictions = permit_mynetworks, permit_tls_clientcerts, - # check everybody else - reject_unauth_pipelining, - reject_invalid_helo_hostname, - reject_non_fqdn_recipient, - reject_non_fqdn_sender, + # check everybody else + reject_unauth_pipelining, + reject_invalid_helo_hostname, + reject_non_fqdn_recipient, + reject_non_fqdn_sender, # misc smtpd_delay_reject = yes diff --git a/roles/postfix/templates/master.cf b/roles/postfix/templates/master.cf new file mode 100644 index 0000000..18b8d98 --- /dev/null +++ b/roles/postfix/templates/master.cf @@ -0,0 +1,126 @@ +# +# Postfix master process configuration file. For details on the format +# of the file, see the master(5) manual page (command: "man 5 master" or +# on-line: http://www.postfix.org/master.5.html). +# +# Do not forget to execute "postfix reload" after editing this file. +# +# ========================================================================== +# service type private unpriv chroot wakeup maxproc command + args +# (yes) (yes) (no) (never) (100) +# ========================================================================== +{% if postfix.postscreen is defined and postfix.postscreen %} +smtp inet n - y - 1 postscreen +{% else %} +smtp inet n - y - - smtpd +{% endif %} +#smtpd pass - - y - - smtpd +#dnsblog unix - - y - 0 dnsblog +#tlsproxy unix - - y - 0 tlsproxy +#submission inet n - y - - smtpd +# -o syslog_name=postfix/submission +# -o smtpd_tls_security_level=encrypt +# -o smtpd_sasl_auth_enable=yes +# -o smtpd_reject_unlisted_recipient=no +# -o smtpd_client_restrictions=$mua_client_restrictions +# -o smtpd_helo_restrictions=$mua_helo_restrictions +# -o smtpd_sender_restrictions=$mua_sender_restrictions +# -o smtpd_recipient_restrictions= +# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject +# -o milter_macro_daemon_name=ORIGINATING +#smtps inet n - y - - smtpd +# -o syslog_name=postfix/smtps +# -o smtpd_tls_wrappermode=yes +# -o smtpd_sasl_auth_enable=yes +# -o smtpd_reject_unlisted_recipient=no +# -o smtpd_client_restrictions=$mua_client_restrictions +# -o smtpd_helo_restrictions=$mua_helo_restrictions +# -o smtpd_sender_restrictions=$mua_sender_restrictions +# -o smtpd_recipient_restrictions= +# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject +# -o milter_macro_daemon_name=ORIGINATING +#628 inet n - y - - qmqpd +pickup unix n - y 60 1 pickup +cleanup unix n - y - 0 cleanup +qmgr unix n - n 300 1 qmgr +#qmgr unix n - n 300 1 oqmgr +tlsmgr unix - - y 1000? 1 tlsmgr +rewrite unix - - y - - trivial-rewrite +bounce unix - - y - 0 bounce +defer unix - - y - 0 bounce +trace unix - - y - 0 bounce +verify unix - - y - 1 verify +flush unix n - y 1000? 0 flush +proxymap unix - - n - - proxymap +proxywrite unix - - n - 1 proxymap +smtp unix - - y - - smtp +relay unix - - y - - smtp +# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 +showq unix n - y - - showq +error unix - - y - - error +retry unix - - y - - error +discard unix - - y - - discard +local unix - n n - - local +virtual unix - n n - - virtual +lmtp unix - - y - - lmtp +anvil unix - - y - 1 anvil +scache unix - - y - 1 scache +# +# ==================================================================== +# Interfaces to non-Postfix software. Be sure to examine the manual +# pages of the non-Postfix software to find out what options it wants. +# +# Many of the following services use the Postfix pipe(8) delivery +# agent. See the pipe(8) man page for information about ${recipient} +# and other message envelope options. +# ==================================================================== +# +# maildrop. See the Postfix MAILDROP_README file for details. +# Also specify in main.cf: maildrop_destination_recipient_limit=1 +# +maildrop unix - n n - - pipe + flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient} +# +# ==================================================================== +# +# Recent Cyrus versions can use the existing "lmtp" master.cf entry. +# +# Specify in cyrus.conf: +# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4 +# +# Specify in main.cf one or more of the following: +# mailbox_transport = lmtp:inet:localhost +# virtual_transport = lmtp:inet:localhost +# +# ==================================================================== +# +# Cyrus 2.1.5 (Amos Gouaux) +# Also specify in main.cf: cyrus_destination_recipient_limit=1 +# +#cyrus unix - n n - - pipe +# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user} +# +# ==================================================================== +# Old example of delivery via Cyrus. +# +#old-cyrus unix - n n - - pipe +# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user} +# +# ==================================================================== +# +# See the Postfix UUCP_README file for configuration details. +# +uucp unix - n n - - pipe + flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient) +# +# Other external delivery methods. +# +ifmail unix - n n - - pipe + flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient) +bsmtp unix - n n - - pipe + flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient +scalemail-backend unix - n n - 2 pipe + flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension} +mailman unix - n n - - pipe + flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py + ${nexthop} ${user}