Configuring the settings for same-type message filtering

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To configure the settings for filtering messages of the same type:

1. Perform the following steps in the Management Console tree:
   • If you want to configure the settings for same-type message filtering on an unassigned Security Server, select the node of the relevant Security Server.
   • If you want to configure the settings for same-type message filtering on Security Servers belonging to a profile, expand the Profiles node and select the node of the profile for whose Security Servers you want to configure same-type message filtering.
2. Select the Server protection node.
3. In the workspace, select the Protection for the Transport Hub role tab.
4. In the Filtering messages of the same type section that opens, configure the following settings:
   • Maximum permissible number of messages

     The maximum number of same-type messages that can be sent by an internal user during a specific period of time. If the number of messages exceeds the value specified in the entry field, the application performs the action defined in the settings: deletes excess messages or delivers them to the recipient while adding the corresponding X header.

     The application keeps a separate tally of the number of messages for each Security Server.

     The default value is – 100.

   • Time interval (min)

     The time period (in minutes) corresponding to the limit on the number of same-type messages sent by an internal user.

     The default value is – 30.

   • Apply the limit to the following types of messages

     The Apply the limit to the following types of messages section lets you specify the attribute by which the application identifies messages as the same type and applies the set limit. You can select one of the following options:

     • All messages;
     • Messages with the same subject;
     • Messages with the same attachment;
     • Messages with the same subject or attachment.

     Having the same subject refers to an exact match of the subject of messages (with matching cases).

     Having the same attachment refers to an exact match of the extension and name of file attachments (with matching cases).

     The default value is All messages.

   • Action

     In this drop-down list, you can select the action taken by the application on same-type messages of a quantity that exceeds the set limit:

     • Allow. The application allows forwarding of messages to recipients.
     • Delete message. The application deletes excess same-type messages. This is the default option.

       Deleted messages cannot be recovered.

     To receive information about same-type messages sent by an internal user that exceed the set limit, you can configure notifications or logging of events to the Windows Event log.

5. Click the Save button.

The settings that you have specified will be saved. The application will filter same-type messages based on the configured settings. You can refine the filtering settings by configuring exclusions.