Add email-sending support

roles/matrix-server/templates/env/env-mailer.j2

@@ -0,0 +1,8 @@
+MAILNAME=matrix-mailer
+{% if matrix_mailer_relay_use %}
+RELAYHOST={{ matrix_mailer_relay_host_name }}:{{ matrix_mailer_relay_host_port }}
+{% endif %}
+{% if matrix_mailer_relay_auth %}
+RELAYHOST_AUTH=yes
+RELAYHOST_PASSWORDMAP={{ matrix_mailer_relay_host_name }}:{{ matrix_mailer_relay_auth_username }}:{{ matrix_mailer_relay_auth_password }}
+{% endif %}

roles/matrix-server/templates/synapse/homeserver.yaml.j2

@@ -86,7 +86,7 @@ web_client: False
 # web_client_location: "/path/to/web/root"
 
 # The public-facing base URL for the client API (not including _matrix/...)
-# public_baseurl: https://example.com:8448/
+public_baseurl: https://{{ hostname_matrix }}/
 
 # Set the soft limit on the number of file descriptors synapse can use
 # Zero is used to indicate synapse should set the soft limit to the
@@ -563,20 +563,20 @@ password_config:
 # If your SMTP server requires authentication, the optional smtp_user &
 # smtp_pass variables should be used
 #
-#email:
-#   enable_notifs: false
-#   smtp_host: "localhost"
-#   smtp_port: 25
-#   smtp_user: "exampleusername"
-#   smtp_pass: "examplepassword"
-#   require_transport_security: False
-#   notif_from: "Your Friendly %(app)s Home Server <noreply@example.com>"
-#   app_name: Matrix
-#   template_dir: res/templates
-#   notif_template_html: notif_mail.html
-#   notif_template_text: notif_mail.txt
-#   notif_for_new_users: True
-#   riot_base_url: "http://localhost/riot"
+{% if matrix_mailer_enabled %}
+email:
+   enable_notifs: true
+   smtp_host: "matrix-mailer"
+   smtp_port: 587
+   require_transport_security: false
+   notif_from: "Matrix <{{ matrix_mailer_sender_address }}>"
+   app_name: Matrix
+   template_dir: /synapse/res/templates
+   notif_template_html: notif_mail.html
+   notif_template_text: notif_mail.txt
+   notif_for_new_users: True
+   riot_base_url: "https://{{ hostname_riot }}"
+{% endif %}
 
 
 # password_providers:

roles/matrix-server/templates/systemd/matrix-mailer.service.j2

@@ -0,0 +1,20 @@
+[Unit]
+Description=Matrix mailer
+After=docker.service
+Requires=docker.service
+
+[Service]
+Type=simple
+ExecStartPre=-/usr/bin/docker kill matrix-mailer
+ExecStartPre=-/usr/bin/docker rm matrix-mailer
+ExecStart=/usr/bin/docker run --rm --name matrix-mailer \
+			--network={{ matrix_docker_network }} \
+			--env-file={{ matrix_environment_variables_data_path }}/env-mailer \
+			{{ matrix_docker_image_mailer }}
+ExecStop=-/usr/bin/docker kill matrix-mailer
+ExecStop=-/usr/bin/docker rm matrix-mailer
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target

roles/matrix-server/templates/systemd/matrix-synapse.service.j2

@@ -10,6 +10,9 @@ After=matrix-postgres.service
 After=matrix-goofys.service
 Requires=matrix-goofys.service
 {% endif %}
+{% if matrix_mailer_enabled %}
+Wants=matrix-mailer.service
+{% endif %}
 Wants=matrix-coturn.service
 
 [Service]