我有 2 台 PC(第二台是第一台的克隆)运行 centos 7。从一台 PC 无法发送邮件。我做了一些测试,结果是这样的:
[root@PC2]# telnet smtps.aruba.it 465
Trying 62.149.156.218...
Connected to smtps.aruba.it.
Escape character is '^]'.
[root@PC1]# telnet smtps.aruba.it 465
Trying 62.149.128.218...
telnet: connect to address 62.149.128.218: No route to host
Trying 62.149.156.218...
telnet: connect to address 62.149.156.218: No route to host
PC1 返回“没有到主机的路由”,但在(全球网络)防火墙上,我记录了从 PC1 退出到主机的数据包。子网中的所有网络配置都相同。还有什么问题?
而且,如果我尝试连接到端口 25(我知道这是不允许的),我总是会收到双重消息:
[root@PC1]# telnet smtps.aruba.it 25
Trying 62.149.156.218...
telnet: connect to address 62.149.156.218: Connection refused
Trying 62.149.128.218...
telnet: connect to address 62.149.128.218: No route to host
而在其他电脑上我有正确的行为
[root@PC2]# telnet smtps.aruba.it 25
Trying 62.149.156.218...
telnet: connect to address 62.149.156.218: Connection refused
Trying 62.149.128.218...
telnet: connect to address 62.149.128.218: Connection refused