To perform the following procedures on a computer that has the Edge Transport Server role installed, you must log on by using an account that is a member of the local Administrator's group on that computer.

Also, before you perform these procedures, confirm the following:

• You have reviewed Anti-Spam and Antivirus Functionality to understand the general strategy for configuring all anti-spam agents so that they work together efficiently for your organization.
  
• You have read Recipient Filtering.
  
• Verify that the AddressBookEnabled parameter is set to $true on any Receive connectors that receive e-mail for the accepted domains in your organization. For more information, see Set-AcceptedDomain.
  

The Recipient Filter agent is the underlying agent for recipient filtering functionality. It's important to understand that when you perform the following procedures, recipient filtering functionality is enabled or disabled, but the underlying Recipient Filter agent is still enabled. To disable the underlying Recipient Filter agent, run the Disable-TransportAgent cmdlet.

 To enable or disable recipient filtering by using the Exchange Management Console

1. In the Exchange Management Console, click Edge Transport.

2. In the work pane, click the Anti-spam tab, and then select Recipient Filtering.

3. In the action pane, click Enable or Disable as appropriate.

 To enable or disable recipient filtering by using the Exchange Management Shell

• To enable recipient filtering, run the following command:

  Set-RecipientFilterConfig -Enabled $true

• To disable recipient filtering, run the following command:

  Set-RecipientFilterConfig -Enabled $false

For detailed syntax and parameter information, see Set-RecipientFilterConfig.

For more information about how to configure recipient filtering, see the following topics:

• Get-RecipientFilterConfig
  
• Set-RecipientFilterConfig
  
• Configuring Recipient Filtering
  
• How to Add Recipients to the Recipient Block List