Solve this: https://github.com/xuxueli/xxl-job/issues/359

xxl-job-admin/src/main/java/com/xxl/job/admin/core/conf/XxlJobAdminConfig.java

@@ -27,6 +27,9 @@ public class XxlJobAdminConfig implements InitializingBean{
     @Value("${xxl.job.mail.port}")
     private String mailPort;
 
+    @Value("${xxl.job.mail.ssl}")
+    private boolean mailSSL;
+
     @Value("${xxl.job.mail.username}")
     private String mailUsername;
 
@@ -54,6 +57,10 @@ public class XxlJobAdminConfig implements InitializingBean{
         return mailPort;
     }
 
+    public boolean isMailSSL() {
+        return mailSSL;
+    }
+
     public String getMailUsername() {
         return mailUsername;
     }

xxl-job-admin/src/main/java/com/xxl/job/admin/core/util/MailUtil.java

@@ -35,8 +35,14 @@ public class MailUtil {
 			//email.setSSL(true);
 
 			email.setHostName(XxlJobAdminConfig.getAdminConfig().getMailHost());
-			email.setSmtpPort(Integer.valueOf(XxlJobAdminConfig.getAdminConfig().getMailPort()));
-			//email.setSslSmtpPort(port);
+
+			if (XxlJobAdminConfig.getAdminConfig().isMailSSL()) {
+				email.setSslSmtpPort(XxlJobAdminConfig.getAdminConfig().getMailPort());
+				email.setSSLOnConnect(true);
+			} else {
+				email.setSmtpPort(Integer.valueOf(XxlJobAdminConfig.getAdminConfig().getMailPort()));
+			}
+
 			email.setAuthenticator(new DefaultAuthenticator(XxlJobAdminConfig.getAdminConfig().getMailUsername(), XxlJobAdminConfig.getAdminConfig().getMailPassword()));
 			email.setCharset(Charset.defaultCharset().name());
 

xxl-job-admin/src/main/resources/xxl-job-admin.properties

@@ -7,6 +7,7 @@ xxl.job.db.password=root_pwd
 ### xxl-job email
 xxl.job.mail.host=smtp.163.com
 xxl.job.mail.port=25
+xxl.job.mail.ssl=false
 xxl.job.mail.username=ovono802302@163.com
 xxl.job.mail.password=asdfzxcv
 xxl.job.mail.sendNick=《任务调度平台XXL-JOB》