Setting up approval on shared server

[alexscott @ lineone . net]

Hi there,

I am trying to setup approval.
It sends the message requesting approval to the right address,
but it is being sent as an attachment from the servers Mail Daemon(Mail
Delivery Subsystem).

The message is saying that:
   ----- The following addresses had permanent fatal errors -----
internal-approval@lists.ourdomain.com

Where could I configure that address?

Regards,
Alex.