Google Postini Message Security Using Postini with Google Apps Education Edition - Manual (Page 14)

14 Using Postini Message Security with Google Apps Education Edition
Set up an Attachment Manager Filter
The Postini Message Security service includes Attachment Manager, which you can use to
filter messages based on file attachment size and type. For example, you can block or
quarantine MP3 files or movie files.
You can set up attachment filters for both inbound and
outbound email .
Set up Attachment Manager
1. Access the Administration Console:
a. Log in to Google Apps using your administrator account.
b. On the Google Apps dashboard, click Postini services.
c. Click System Administration.
2. Go to Orgs and Users > Orgs, and then select the organization that has your students
(not your staff or faculty). In this procedure, this is your Users organization.
3. On the Organization Management page, click Attachment Manager, listed under
Inbound Services.
4. On the Inbound Attachment Manager page, click the Edit link, in the dark gray bar.