邮件发送失败，修改yml配置方式

jeecg-boot/jeecg-module-system/jeecg-system-start/src/main/resources/application-test.yml

@@ -38,12 +38,9 @@ spring:
     username: jeecgos@163.com
     password: ??
     properties:
-      mail:
-        smtp:
-          auth: true
-          starttls:
-            enable: true
-            required: true
+      mail.smtp.auth: true
+      smtp.ssl.enable: true
+      mail.debug: true  # 启用调试模式(查看详细日志)
   ## quartz定时任务,采用数据库方式
   quartz:
     job-store-type: jdbc