Added AUTH command and PLAIN sasl mechanism

cmd/server/config.go

@@ -24,12 +24,17 @@ import (
 )
 
 type Config struct {
-	LogLevel string
-	Host     string
+	General  GeneralConfig
 	Plain    PlainConfig
 	TLS      TLSConfig
 }
 
+type GeneralConfig struct {
+	LogLevel     string
+	Host         string
+	PasswordHash string
+}
+
 type PlainConfig struct {
 	Enabled bool
 	Port    string

cmd/server/main.go

@@ -62,8 +62,8 @@ func main() {
 		log.Fatal().Msgf("%v", err)
 	}
 	if log_level == "" {
-		if config.LogLevel != "" {
-			log_level = config.LogLevel
+		if config.General.LogLevel != "" {
+			log_level = config.General.LogLevel
 		} else {
 			log_level = "info"
 		}
@@ -107,7 +107,8 @@ func main() {
 	}
 
 	err = smtp.Run(
-		config.Host,
+		config.General.Host,
+		config.General.PasswordHash,
 		plain_config,
 		tls_config,
 	)