Applies to: Exchange Server 2007
Topic Last Modified: 2007-06-15

Use the Action tab on the sender filtering properties to configure the Sender Filter agent to take one of the following actions when a blocked sender or domain is identified.

Reject message

To reject the message and send a "554 5.1.0 Sender Denied" Simple Mail Transfer Protocol (SMTP) session error to the sending server, select Reject message. Reject message is the recommended setting.

Stamp message with blocked sender and continue processing

To update the metadata of the message to indicate that this message was sent by a blocked sender, select this setting. This stamp is used by the Content Filter agent when it calculates the spam confidence level (SCL) for the message. Additionally, sender reputation uses the SCL for a particular message when it calculates a sender reputation level (SRL) for the sender of the message.

For More Information

To ensure that you are reading the most up-to-date information and to find additional Exchange Server 2007 documentation, visit the Exchange Server TechCenter.

---

© 2008 Microsoft Corporation. All rights reserved. Legal Information