sunnyit |
2016-03-26 19:46 |
外网能收,不能发
望各位大侠能指点小弟
公司有固定IP,并且在ISP的域名DNS里设置了A和MX记录。 防火墙端口也都打开了。
内网邮件收发都没问题,外网邮件接受也没问题。 但是内网向外网发送邮件一直失败。 发送连接器也是按照要求设置的。
查看了邮件队列,显示如下 "451 4.4.0 Primary target IP address responded with: ""."" Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts.” |
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