If users receive notification messages on BlackBerry® devices too frequently from an event data source (for example, an application server or content server), you can create a filter to block the notification messages. When you create a filter to block an event data source, the BlackBerry MDS Integration Service does not process or send notification messages from the event data source to BlackBerry devices.

1. In the BlackBerry Administration Service, on the Servers and components menu, expand BlackBerry Solution topology > BlackBerry Domain > Component view > MDS Integration Service.
2. Click the instance that you want to change.
3. Click Edit instance.
4. In the Filter host/address field, type the name of the event data source (for example, <host_name>.<domain>) or the IP address of the event data source.
5. Click Save all.