Allow email relaying to a real MTA

internal/config/config.go

@@ -12,9 +12,10 @@ import (
 )
 
 type Config struct {
-	HTTP HTTPConfig `yaml:"http"`
-	SMTP SMTPConfig `yaml:"smtp"`
-	Data DataConfig `ymal:"data"`
+	HTTP  HTTPConfig  `yaml:"http"`
+	SMTP  SMTPConfig  `yaml:"smtp"`
+	Data  DataConfig  `yaml:"data"`
+	Relay RelayConfig `yaml:"relay"`
 }
 
 type HTTPConfig struct {
@@ -36,6 +37,18 @@ type SMTPConfig struct {
 	Debug             bool          `yaml:"debug" env:"FAKESMTP_SMTP_DEBUG"`
 }
 
+type RelayConfig struct {
+	Enabled            bool   `yaml:"enabled" env:"FAKESMTP_RELAY_ENABLED"`
+	Address            string `yaml:"address" env:"FAKESMTP_RELAY_ADDRESS"`
+	Identity           string `yaml:"identity" env:"FAKESMTP_RELAY_IDENTITY"`
+	Username           string `yaml:"username" env:"FAKESMTP_RELAY_USERNAME"`
+	Password           string `yaml:"password" env:"FAKESMTP_RELAY_PASSWORD"`
+	Anonymous          bool   `yaml:"anonymous" env:"FAKESMTP_RELAY_ANONYMOUS"`
+	UseTLS             bool   `yaml:"useTLS" env:"FAKESMTP_RELAY_USE_TLS"`
+	InsecureSkipVerify bool   `yaml:"insecureSkipVerify" env:"FAKESMTP_RELAY_INSECURE_SKIP_VERIFY"`
+	FromOverride       string `yaml:"fromOverride" env:"FAKESMTP_RELAY_FROM_OVERRIDE"`
+}
+
 type DataConfig struct {
 	Path string `yaml:"path" env:"FAKESMTP_DATA_PATH"`
 }
@@ -91,6 +104,9 @@ func NewDefault() *Config {
 		Data: DataConfig{
 			Path: "fakesmtp.db",
 		},
+		Relay: RelayConfig{
+			Enabled: false,
+		},
 	}
 }