This is the Postfix program at host mx04.263xmail.com.
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.
The Postfix program
fsgzydq@alibaba.com.cn: host 127.0.0.1[127.0.0.1] said: 550 fsgzydq@alibaba.com.cn:mailbox limit exceeded (in reply to end of DATA command)