diff --git a/common/email.go b/common/email.go
index 905f385..72e8979 100644
--- a/common/email.go
+++ b/common/email.go
@@ -10,7 +10,7 @@ import (
 )
 
 func generateMessageID() string {
-	domain := strings.Split(SMTPFrom, "@")[1]
+	domain := strings.Split(SMTPAccount, "@")[1]
 	return fmt.Sprintf("<%d.%s@%s>", time.Now().UnixNano(), GetRandomString(12), domain)
 }
 
@@ -18,6 +18,9 @@ func SendEmail(subject string, receiver string, content string) error {
 	if SMTPFrom == "" { // for compatibility
 		SMTPFrom = SMTPAccount
 	}
+	if SMTPServer == "" && SMTPAccount == "" {
+		return fmt.Errorf("SMTP 服务器未配置")
+	}
 	encodedSubject := fmt.Sprintf("=?UTF-8?B?%s?=", base64.StdEncoding.EncodeToString([]byte(subject)))
 	mail := []byte(fmt.Sprintf("To: %s\r\n"+
 		"From: %s<%s>\r\n"+