Recipient Filtering in Exchange Server 2010

As the name suggests, recipient filtering filters messages that come through Receive connectors on Edge Transport server. By default, recipient filtering is enabled and it filters unauthenticated messages coming from the internet.

How to enable Recipient Filtering on the Edge Transport server from the Exchange Management Console

1. Open the Exchange Management Console.

2. Click on the Edge Transport.

3. Click the Anti-spam tab in the work pane, and select Recipient Filtering.

4. Click Enable or Disable from the Action pane.

How to enable Recipient Filtering on the Edge Transport server from the PowerShell

Run below commands to enable or disable the Recipient Filtering on Edge Transport server.

To enable recipient filtering:-

Set-RecipientFilterConfig -Enabled $true

To disable recipient filtering:-

Set-RecipientFilterConfig -Enabled $false

How to Configure Recipient Filtering

We can configure a number of options from the recipient filtering. To do so, perform the below steps:-

1. Open the Exchange Management Console.

2. Click on the Edge Transport.

3. Click the Anti-spam tab in the work pane, and select Recipient Filtering and open its Properties.

4. Under the Blocked Recipients tab we can select two options:-

· Block messages sent to recipients that do not exist in the directory

· Block messages sent to the following recipients