Edge Transport > Anti-Spam > Sender Reputation Properties > Sender Confidence Tab

Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1

Use the Sender Confidence tab on the sender reputation properties to enable or disable detection of open proxy servers.

A test for open proxy servers is one of the characteristics that sender reputation evaluates to calculate the sender reputation level (SRL). When it is enabled, sender reputation filters all external messages that come through all Receive connectors on that computer. If sender reputation verifies that the proxy server is an open proxy server, sender reputation adjusts the SRL rating appropriately. By default, detection of open proxy servers is enabled.

• Perform an open proxy test when determining sender confidence level
  To disable detection of open proxy servers, clear this check box. To enable the detection of open proxy servers, select the check box.

For More Information

For more information about sender reputation, see the following topics:

• Sender Reputation

• Anti-Spam and Antivirus Functionality

• Configuring Sender Reputation

• Sender Reputation Cmdlets