Secure SMTP listener

config/config.go

@@ -21,6 +21,12 @@ func New() *Config {
 		MaxSize:      env.Int("maxsize", defaultConfig.MaxSize),
 		StatusMsg:    env.String("statusmsg", defaultConfig.StatusMsg),
 		Admins:       env.Slice("admins"),
+		TLS: TLS{
+			Cert:     env.String("tls.cert", defaultConfig.TLS.Cert),
+			Key:      env.String("tls.key", defaultConfig.TLS.Key),
+			Required: env.Bool("tls.required"),
+			Port:     env.String("tls.port", defaultConfig.TLS.Port),
+		},
 		Sentry: Sentry{
 			DSN: env.String("sentry.dsn", defaultConfig.Sentry.DSN),
 		},

config/defaults.go

@@ -11,4 +11,7 @@ var defaultConfig = &Config{
 		DSN:     "local.db",
 		Dialect: "sqlite3",
 	},
+	TLS: TLS{
+		Port: "587",
+	},
 }

config/types.go

@@ -28,6 +28,9 @@ type Config struct {
 	// DB config
 	DB DB
 
+	// TLS config
+	TLS TLS
+
 	// Sentry config
 	Sentry Sentry
 }
@@ -40,6 +43,14 @@ type DB struct {
 	Dialect string
 }
 
+// TLS config
+type TLS struct {
+	Cert     string
+	Key      string
+	Port     string
+	Required bool
+}
+
 // Sentry config
 type Sentry struct {
 	DSN string