diff --git a/jeecg-module-system/jeecg-system-start/src/main/resources/application-dev.yml b/jeecg-module-system/jeecg-system-start/src/main/resources/application-dev.yml
index e48e1b7b5..d1ca8fc48 100644
--- a/jeecg-module-system/jeecg-system-start/src/main/resources/application-dev.yml
+++ b/jeecg-module-system/jeecg-system-start/src/main/resources/application-dev.yml
@@ -26,7 +26,7 @@ spring:
       max-request-size: 10MB
   mail:
     host: smtp.163.com
-    username: jeecgos@163.com
+    username: ??
     password: ??
     properties:
       mail:
diff --git a/jeecg-module-system/jeecg-system-start/src/main/resources/application-dm8.yml b/jeecg-module-system/jeecg-system-start/src/main/resources/application-dm8.yml
index 0429874e6..968af3dda 100644
--- a/jeecg-module-system/jeecg-system-start/src/main/resources/application-dm8.yml
+++ b/jeecg-module-system/jeecg-system-start/src/main/resources/application-dm8.yml
@@ -26,7 +26,7 @@ spring:
       max-request-size: 10MB
   mail:
     host: smtp.163.com
-    username: jeecgos@163.com
+    username: ??
     password: ??
     properties:
       mail:
diff --git a/jeecg-module-system/jeecg-system-start/src/main/resources/application-prod.yml b/jeecg-module-system/jeecg-system-start/src/main/resources/application-prod.yml
index 9280101e4..a443368f8 100644
--- a/jeecg-module-system/jeecg-system-start/src/main/resources/application-prod.yml
+++ b/jeecg-module-system/jeecg-system-start/src/main/resources/application-prod.yml
@@ -26,7 +26,7 @@ spring:
       max-request-size: 10MB
   mail:
     host: smtp.163.com
-    username: jeecgos@163.com
+    username: ??
     password: ??
     properties:
       mail:
diff --git a/jeecg-module-system/jeecg-system-start/src/main/resources/application-test.yml b/jeecg-module-system/jeecg-system-start/src/main/resources/application-test.yml
index a8aa8b67f..66c48d54d 100644
--- a/jeecg-module-system/jeecg-system-start/src/main/resources/application-test.yml
+++ b/jeecg-module-system/jeecg-system-start/src/main/resources/application-test.yml
@@ -26,7 +26,7 @@ spring:
       max-request-size: 10MB
   mail:
     host: smtp.163.com
-    username: jeecgos@163.com
+    username: ??
     password: ??
     properties:
       mail: