E-mail quota limit

I have set an e-mail size quota so that users cannot exceed 5000kb e-mails, i dont this in the messaging configuration document in administrator.

What this does then is that when an e-mail goes over the 5000kb limit it will hold the message in mail.box and it will send a notification that the message is over its limit, what i want to happen though is send an e-mail to the user who sent it. At the moment it sends the delivery failure report to the Administrator (me).

Is there anyway of changing this?

Subject: E-mail quota limit

Does this help?