fix: use mgmt@msbls.de as default MAIL_FROM (alias now exists)

backend/internal/config/config.go

@@ -38,7 +38,7 @@ func Load() (*Config, error) {
 		SMTPPort: getEnv("SMTP_PORT", "465"),
 		SMTPUser: os.Getenv("SMTP_USER"),
 		SMTPPass: os.Getenv("SMTP_PASS"),
-		MailFrom: getEnv("MAIL_FROM", "mail@msbls.de"),
+		MailFrom: getEnv("MAIL_FROM", "mgmt@msbls.de"),
 	}
 
 	if cfg.DatabaseURL == "" {

backend/internal/services/notification_service.go

@@ -473,7 +473,7 @@ func SendEmail(to, subject, body string) error {
 		port = "465"
 	}
 	if from == "" {
-		from = "mail@msbls.de"
+		from = "mgmt@msbls.de"
 	}
 
 	if host == "" || user == "" || pass == "" {