{
    "slug":  "postfix-relay",
    "name":  "Postfix Relay",
    "description":  "Lightweight Postfix MTA container for outbound mail relay and SMTP forwarding.",
    "category":  "Communications",
    "image":  "mwader/postfix-relay:latest",
    "logo":  "https://icon.horse/icon/github.com",
    "website":  "https://github.com/wader/postfix-relay",
    "docsUrl":  "https://github.com/wader/postfix-relay",
    "ports":  [
                  {
                      "host":  25,
                      "container":  25,
                      "protocol":  "tcp"
                  }
              ],
    "volumes":  [
                    {
                        "host":  "/opt/appdata/postfix-relay/data",
                        "container":  "/var/spool/postfix"
                    }
                ],
    "envVars":  [
                    {
                        "key":  "TZ",
                        "default":  "Etc/UTC",
                        "description":  "Timezone"
                    },
                    {
                        "key":  "RELAYHOST",
                        "default":  "smtp.example.com",
                        "description":  "Upstream SMTP relay host"
                    },
                    {
                        "key":  "RELAY_PORT",
                        "default":  "587",
                        "description":  "Upstream SMTP relay port"
                    },
                    {
                        "key":  "RELAY_USERNAME",
                        "default":  "",
                        "description":  "SMTP relay username",
                        "secret":  true
                    },
                    {
                        "key":  "RELAY_PASSWORD",
                        "default":  "",
                        "description":  "SMTP relay password",
                        "secret":  true
                    }
                ],
    "version":  "latest"
}