From 2183d5778e4e4f086bc9b031577b6fde2fb0825b Mon Sep 17 00:00:00 2001
From: Salt <rehashedsalt@cock.li>
Date: Thu, 23 Jul 2020 22:47:22 -0500
Subject: [PATCH] Add Postfix-SES role for easy integration

---
 roles/postfix-ses/handlers/main.yml     |  8 ++++
 roles/postfix-ses/meta/main.yml         |  2 +
 roles/postfix-ses/tasks/main.yml        | 47 ++++++++++++++++++++++
 roles/postfix-ses/templates/main.cf     | 52 +++++++++++++++++++++++++
 roles/postfix-ses/templates/sasl_passwd |  1 +
 5 files changed, 110 insertions(+)
 create mode 100644 roles/postfix-ses/handlers/main.yml
 create mode 100644 roles/postfix-ses/meta/main.yml
 create mode 100644 roles/postfix-ses/tasks/main.yml
 create mode 100644 roles/postfix-ses/templates/main.cf
 create mode 100644 roles/postfix-ses/templates/sasl_passwd

diff --git a/roles/postfix-ses/handlers/main.yml b/roles/postfix-ses/handlers/main.yml
new file mode 100644
index 0000000..e343753
--- /dev/null
+++ b/roles/postfix-ses/handlers/main.yml
@@ -0,0 +1,8 @@
+#!/usr/bin/ansible-playbook
+# vim:ft=ansible:
+---
+- name: restart postfix
+  systemd:
+    name: postfix
+    state: restarted
+  become: yes
diff --git a/roles/postfix-ses/meta/main.yml b/roles/postfix-ses/meta/main.yml
new file mode 100644
index 0000000..d098f75
--- /dev/null
+++ b/roles/postfix-ses/meta/main.yml
@@ -0,0 +1,2 @@
+---
+allow_duplicates: no
diff --git a/roles/postfix-ses/tasks/main.yml b/roles/postfix-ses/tasks/main.yml
new file mode 100644
index 0000000..6963548
--- /dev/null
+++ b/roles/postfix-ses/tasks/main.yml
@@ -0,0 +1,47 @@
+#!/usr/bin/ansible-playbook
+# vim:ft=ansible:
+---
+- name: Install Postfix for SES
+  block:
+    - name: Install Postfix
+      apt:
+        name:
+          - postfix
+    - name: Template out configuration
+      template:
+        src: "{{ item.src }}"
+        dest: "{{ item.dest }}"
+        mode: "{{ item.mode }}"
+      loop:
+        - { src: "main.cf", dest: "/etc/postfix/main.cf", mode: "0644" }
+      notify: restart postfix
+    - name: Template out password
+      template:
+        src: sasl_passwd
+        dest: /etc/postfix/sasl_passwd
+        mode: "0640"
+        owner: root
+        group: postfix
+      notify: restart postfix
+      register: p
+    - name: Look for password database
+      stat:
+        path: /etc/postfix/sasl_passwd.db
+      register: s
+    - name: Regenerate password database
+      command:
+        cmd: postmap /etc/postfix/sasl_passwd
+      notify: restart postfix
+      when: p is changed or not s.stat.exists
+    - name: Tighten permissions on sasl_passwd.db
+      file:
+        path: /etc/postfix/sasl_passwd.db
+        mode: "0640"
+        owner: root
+        group: postfix
+    - name: Enable service
+      systemd:
+        name: postfix
+        enabled: yes
+        state: started
+  become: yes
diff --git a/roles/postfix-ses/templates/main.cf b/roles/postfix-ses/templates/main.cf
new file mode 100644
index 0000000..3cba723
--- /dev/null
+++ b/roles/postfix-ses/templates/main.cf
@@ -0,0 +1,52 @@
+# See /usr/share/postfix/main.cf.dist for a commented, more complete version
+
+
+# Debian specific:  Specifying a file name will cause the first
+# line of that file to be used as the name.  The Debian default
+# is /etc/mailname.
+#myorigin = /etc/mailname
+
+smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
+biff = no
+
+# appending .domain is the MUA's job.
+append_dot_mydomain = no
+
+# Uncomment the next line to generate "delayed mail" warnings
+#delay_warning_time = 4h
+
+readme_directory = no
+
+# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
+# fresh installs.
+compatibility_level = 2
+
+# TLS parameters
+smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
+smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
+smtpd_use_tls=yes
+smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
+smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
+# This section and the relayhost are set up for SES
+smtp_sasl_auth_enable=yes
+smtp_sasl_security_options = noanonymous
+smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
+smtp_use_tls = yes
+smtp_tls_security_level = encrypt
+smtp_tls_note_starttls_offer = yes
+smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
+
+# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
+# information on enabling SSL in the smtp client.
+
+smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
+myhostname = web2.us-east-2.compute.internal
+alias_maps = hash:/etc/aliases
+alias_database = hash:/etc/aliases
+mydestination = $myhostname, web2, localhost.localdomain, , localhost
+relayhost = [email-smtp.us-east-1.amazonaws.com]:587
+mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
+mailbox_size_limit = 0
+recipient_delimiter = +
+inet_interfaces = all
+inet_protocols = all
diff --git a/roles/postfix-ses/templates/sasl_passwd b/roles/postfix-ses/templates/sasl_passwd
new file mode 100644
index 0000000..7dd36dd
--- /dev/null
+++ b/roles/postfix-ses/templates/sasl_passwd
@@ -0,0 +1 @@
+[email-smtp.us-east-1.amazonaws.com]:587 {{ aws_ses_user }}:{{ aws_ses_pass }}