帮忙看下邮件退信是怎么回事.This is the mail system at host wzbizmta02.wtt

帮忙看下邮件退信是怎么回事.
This is the mail system at host wzbizmta02.wtt.netvigator.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 mail system
:host
bzmms04dat.wtt.netvigator.com[172.16.12.114] said:452 4.2.2 Over quota (in
reply to end of DATA command)