我的国外空间是支持邮件中转的，也就是说当有人发邮件到wwwwww@166.com这个邮箱的时候，我设定的eeeeee@msn.com也能接收到该邮件。
现在的问题是：当有人发邮件到wwwwww@166.com这个邮箱的时候，邮箱eeeeee@msn.com 不能接收邮件（提示如下英文），并且会提示邮件发送者，邮件不能成功发送到eeeeee@msn.com，是不是要在eeeeee@msn.com邮箱里面设定什么啊？（比如SMTP之类的啊），还望高手指教怎么去操作，谢谢

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Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too long.