我新浪的老号和QQ邮箱间的通信正常。
新号就发给QQ的收不到，QQ发的可以收到，还提示：
This is the mail system at host mail2-240.sinamail.sina.com.cn.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
