Topic Last Modified: 2007-05-10
The Microsoft Exchange Best Practices Analyzer tool uses the following Exchange Management Shell cmdlet to query for the values of the Enabled and ExternalMailEnabled properties of the SenderIdConfig object for any target Exchange Server 2007 Edge Transport or Hub Transport server roles.
The value of the Enabled property specifies whether the Sender ID agent is enabled. Valid input for the Enabled parameter is $true or $false. The default setting is $true. When the Enabled parameter is set to $true, the Sender ID agent is enabled.
The value of the ExternalMailEnabled property specifies whether all messages from unauthenticated connections are passed through the Sender ID agent for processing. Valid input for the ExternalMailEnabled parameter is $true or $false. The default setting is $true. When the ExternalMailEnabled parameter is set to $true, all messages from unauthenticated connections are passed through the Sender ID agent for processing.
If the Exchange Best Practices Analyzer determines that the values for the SenderIdConfig object Enabled or ExternalMailEnabled properties are not set to $true, the Exchange Best Practices Analyzer displays a best practices message.
This message indicates that Sender ID is not enabled on the target Exchange 2007 Edge Transport or Hub Transport server roles.
Sender ID seeks to verify that every e-mail message originates from the Internet domain from which it claims to have been sent.
When Sender ID is enabled on a computer, it filters all messages that come through all Receive connectors on that computer. Only messages that come from external sources are filtered. External sources are defined as non-authenticated sources. These are considered anonymous Internet sources.
To address this issue, enable Sender ID on the target Exchange 2007 Edge Transport or Hub Transport server roles.To use the Exchange Management Shell to enable Sender ID functionality
To enable sender filtering, run the following command:
Set-SenderIdConfig -Enabled $true -ExternalMailEnabled $true
For more information about Sender ID, see the following topics: