diff --git a/config/mail.php b/config/mail.php
index ff065be..7529216 100644
--- a/config/mail.php
+++ b/config/mail.php
@@ -34,17 +34,17 @@ return [
     */
 
     'mailers' => [
-       'smtp' => [
-    'transport' => 'smtp',
-    'url' => null,
-    'host' => 'smtp.exmail.qq.com',
-    'port' => 465,
-    'encryption' => 'ssl',
-    'username' => env('MAIL_USERNAME'),
-    'password' => env('MAIL_PASSWORD'),
-    'timeout' => null,
-    'local_domain' => env('MAIL_EHLO_DOMAIN'),
-]
+        'smtp' => [
+            // 生产环境固定使用腾讯企业邮箱，避免服务器残留 Mailpit 配置覆盖 SMTP。
+            'transport' => 'smtp',
+            'url' => null,
+            'host' => 'smtp.exmail.qq.com',
+            'port' => 465,
+            'encryption' => 'ssl',
+            'username' => env('MAIL_USERNAME'),
+            'password' => env('MAIL_PASSWORD'),
+            'timeout' => null,
+            'local_domain' => env('MAIL_EHLO_DOMAIN'),
         ],
 
         'ses' => [