You can use recipient filtering to configure recipient block lists and recipient exception lists to block or allow mail to specific recipients.

When Forefront Protection 2010 for Exchange Server detects e-mail addressed to recipient addresses on the Recipient Block List, it blocks the e-mail and no further resources are used to scan the messages. When FPE detects mail on the Recipient Exception List, the message bypasses all antispam scanning.

Before you begin configuring the recipient filtering settings, you need to enable recipient filtering.

To enable recipient filtering

  1. In the Forefront Protection 2010 for Exchange Server Administrator Console  Policy Management view, in the tree view, expand Antispam, and then click Configure.

  2. In the Antispam - Configure pane, in the Recipient filter section, select the Enable recipient filtering check box.

    Once you have enabled Recipient Filtering, you can configure the Recipient Block List.

Blocking e-mail sent to specific addresses

You can add recipient aliases to the Recipient Block List in order to prevent messages that are addressed to blocked addresses from entering your messaging environment.

To add e-mail addresses to the Recipient Block List

  1. In the FPE Administrator Console  Policy Management view, in the tree view, expand Antispam, and then click Configure.

  2. In the Antispam - Configure pane, in the Recipient filter section, click the Configure Recipient Lists button.

  3. In the Configure Blocked Recipient List dialog box, perform the following steps:

    1. Select Blocked Recipients in the menu bar.

    2. In the E-mail Address box, enter the e-mail address that you want to add. You must add each e-mail address individually.

    3. Click Apply to save your changes and enter additional e-mail addresses or click Apply and Close to save your entry and return to the Antispam - Configure pane. The e-mail address is added to the Blocked Recipients List.

  4. Click Save at the top of the pane to save your configuration.

Allowing e-mail sent to specific recipients to by-pass spam filtering

To add e-mail addresses to the Recipient Exception List

  1. In the FPE Administrator Console  Policy Management view, in the tree view, expand Antispam, and then click Configure.

  2. In the Actions pane, select Configure Content Allow Lists.

  3. In the Configure Content Allow Lists dialog box, perform the following steps:

    1. Select Allowed Recipients in the menu bar.

    2. In the E-mail Address box, enter the e-mail address that you want to add. You must add each e-mail address individually.

    3. Click Apply to save your changes and enter additional e-mail addresses or click Apply and Close to save your entry and return to the Antispam - Configure pane. The e-mail address is added to the Recipient Exceptions List.

  4. Click Save at the top of the pane to save your configuration.

The address is added to the Recipient Exception list. You can repeat this step in order to add more addresses.

Note   You can edit items in the lists by double-clicking and editing an item, and then pressing ENTER. You can delete items from the lists by selecting an item and clicking Remove. You can also import and export items from a list. For more information, see Importing items into a list and Exporting items from a list.

Blocking e-mail sent to invalid addresses

You can also block e-mail that is not addressed to a valid recipient in your organization. To do so, select the Only accept messages to valid Recipients from the Global Address List check box. This setting prevents the scanning of messages that are addressed to invalid addresses, which conserves resources and places the burden of generating NDRs on the sending MTA.