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## Enabling Real-time Attachment Blocking

### Procedure

1. Click Attachment Blocking from the main menu.
   The Attachment Blocking screen displays.
2. Select Enable transport level attachment blocking.
3. Select Enable store level attachment blocking. (Exchange Server 2010 and 2007)
4. Select Enable real-time attachment blocking. (Exchange Server 2003)
5. Click Save to enable attachment blocking.

Related information

- Adding an Exception to the Attachment Blocking Global Policy
- Editing an Attachment Blocking Exception