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 Administrators 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 Configuring Sender Filtering.
  
  

By default, sender filtering functionality is enabled on the computer that has the Edge Transport server role installed for inbound messages that come from the Internet but are not authenticated.

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

To use the Exchange Management Console to enable or disable sender filtering

To use the Exchange Management Shell to enable or disable sender filtering

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

For more information about how to use and configure sender filtering functionality, see the following topics:

• Anti-Spam and Antivirus Functionality
  
  
• Sender Filtering
  
  
• Configuring Sender Filtering
  
  
• How to Add Blocked Senders and Domains to Sender Filter
  
  
• How to Configure the Sender Filter Blocking Actions
  
  
• Set-SenderFilterConfig