网友的相关建议:
应该是和bluehost一样,使用Iptables不让服务器连接外部的SMTP服务器,禁用了几个常用smtp端口:25,26,465和587。你可以发ticket去GoDaddy问一下,看看到底是怎么回事。Bluehost是这么回复的:Unfortunately, we do not allow SMTP connections to external hosts from our servers. We have blocked ports 25, 26, 465 and 587.