IvaSoft - Purchase IvaSoft products - Read Receipt Remover for Exchange 2007/2010 (Site license) - Read Receipt Remover for Microsof Exchange 2007/2010 application can remove the read receipt request from any e-mail message, so the Read Notification will never be sent back to the message originator. You can create a group of users that will never receive the read report requests. Optionally you can prevent sending read receipts globally or only from internal users.

Read Receipt Remover for Microsoft® Exchange 2007/2010 application (RRR) can remove the read receipt request from any e-mail message, so the Read Notification will never be sent back to the message originator. You can create a group of users that will never receive the read report requests. Optionally you can prevent sending read receipts globally or only from internal users.
The application is a Transport agent.

Benefits

This application can increase the "hacker-resistance" of your e-mail system
Read request removing is processed instantly, before any rules are applied
You can set up RRR to work selectively or globally.