====== Run A MTA (Mail Transfer Agent) for Other Docker Containers ======

<code ini /etc/systemd/system/EXAMPLE-smtp.service>
[Unit]
Description=SMTP Proxy for EXAMPLE
After=docker.service
Requires=docker.service
BindsTo=docker.service

[Service]
SyslogIdentifier=EXAMPLE-smtp.service
ExecStart=/usr/bin/systemd-docker run \
  --rm \
  --name %n \
  --net mynet --ip 100.64.5.3 \
  --env MAILNAME=git.EXAMPLE.com \
  namshi/smtp
Restart=always
RestartSec=30s
Type=notify
NotifyAccess=all
TimeoutStartSec=120
TimeoutStopSec=30

[Install]
WantedBy=multi-user.target
</code>

===== Notes =====
  * Port 25 will be exposed. No authorization is required.
  * Modes:
    * As SMTP Server
      * No extra environment variables
    * As Gmail Relay
      * ''GMAIL_USER''
      * ''GMAIL_PASSWORD''
    * As Amazon SES Relay
      * ''SES_USER''
      * ''SES_PASSWORD''
      * //''SES_REGION''//
    * As generic SMTP Relay
      * ''SMARTHOST_ADDRESS=mail.mysmtp.com''
      * ''SMARTHOST_PORT=587''
      * ''SMARTHOST_USER=myuser''
      * ''SMARTHOST_PASSWORD=secret''
      * ''SMARTHOST_ALIASES=*.mysmtp.com''

===== See Alsos =====
  * https://github.com/namshi/docker-smtp

{{tag>docker-install smtp mta}}