diff --git a/IRaCIS.Core.API/appsettings.Development.json b/IRaCIS.Core.API/appsettings.Development.json
index 4333cf480..472565ed7 100644
--- a/IRaCIS.Core.API/appsettings.Development.json
+++ b/IRaCIS.Core.API/appsettings.Development.json
@@ -22,7 +22,7 @@
   },
 
   "SystemEmailSendConfig": {
-    "Port": 25,
+    "Port": 465,
     "Host": "smtp.qiye.aliyun.com",
     "FromEmail": "test@extimaging.com",
     "FromName": "Test_IRC",
diff --git a/IRaCIS.Core.API/appsettings.Staging.json b/IRaCIS.Core.API/appsettings.Staging.json
index 52e93a6ee..5f31dbb97 100644
--- a/IRaCIS.Core.API/appsettings.Staging.json
+++ b/IRaCIS.Core.API/appsettings.Staging.json
@@ -19,7 +19,7 @@
 
   },
   "SystemEmailSendConfig": {
-    "Port": 25,
+    "Port": 465,
     "Host": "smtp.qiye.aliyun.com",
     "FromEmail": "uat@extimaging.com",
     "FromName": "UAT_IRC",
diff --git a/IRaCIS.Core.Application/Helper/SendEmailHelper.cs b/IRaCIS.Core.Application/Helper/SendEmailHelper.cs
index 1a10db402..aa5ee76b2 100644
--- a/IRaCIS.Core.Application/Helper/SendEmailHelper.cs
+++ b/IRaCIS.Core.Application/Helper/SendEmailHelper.cs
@@ -27,7 +27,7 @@ public static class SendEmailHelper
 
                 //await smtp.AuthenticateAsync("zhou941003@qq.com", "sqfhlpfdvnexbcab");
 
-                await smtp.ConnectAsync(_systemEmailConfig.Host, _systemEmailConfig.Port, SecureSocketOptions.Auto);
+                await smtp.ConnectAsync(_systemEmailConfig.Host, _systemEmailConfig.Port, SecureSocketOptions.SslOnConnect);
 
                 await smtp.AuthenticateAsync(_systemEmailConfig.FromEmail, _systemEmailConfig.AuthorizationCode);