英语翻译This is the Postfix program at host mx.zhaopin.com.cn.I'

英语翻译
This is the Postfix program at host mx.zhaopin.com.cn.
I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.
For further assistance,please send mail to
If you do so,please include this problem report.You can
delete your own text from the message returned below.
The Postfix program
:host 192.168.11.8[192.168.11.8] said:550 5.1.1
:Recipient address rejected:User unknown in virtual
mailbox table (in reply to RCPT TO command)