koalton_个人页

回 1楼dongshan8的帖子 版主大神好，您提到的25端口应该是使用SMTP协议发送邮件使用25端口，现在我的场景是使用IMAP协议接收邮件，使用JavaMail在进行IMAP协议接收邮件时，并不会使用25端口（至少从程序上看是没有使用到端口的，且在我本地验证通过）。 另外您提到的ECS实例都过滤了25端口通讯，我在系统服务里的防火墙中已经对25端口设置了通行授权（进站和出站都设置了允许） 叨扰大神，可以再帮忙分析下吗？ ------------------------- 回 3楼dongshan8的帖子 访问目标端口有如下提示： [root@koalton ~]# ssh -v -p 143 12@imap.aliyun.com                                                                                                                           OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013                                                                                                                               debug1: Reading configuration data /etc/ssh/ssh_config                                                                                                                       debug1: /etc/ssh/ssh_config line 56: Applying options for *                                                                                                                   debug1: Connecting to imap.aliyun.com [140.205.94.8] port 143 一直没有反应， ------------------------- 回 5楼dongshan8的帖子 这就尴尬了。 我试了下另外网易邮箱的IMAP端口，也是143，结果如下： [root@koalton ~]# ssh -v -p 143 12@imap.163.com                                                                                                                               OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013                                                                                                                               debug1: Reading configuration data /etc/ssh/ssh_config                                                                                                                       debug1: /etc/ssh/ssh_config line 56: Applying options for *                                                                                                                   debug1: Connecting to imap.163.com [123.125.50.47] port 143.                                                                                                                 debug1: connect to address 123.125.50.47 port 143: Connection timed out                                                                                                       ssh: connect to host imap.163.com port 143: Connection timed out 之前在使用ssh时候，访问阿里云的邮箱服务器(IMAP)时候，后来我看了下结果，也是提示 Connection timed out 是不是大神我需要设置下我的实例的防火墙？把里面的规则全部清空可以吗？