Introduced in Microsoft Office 2003 products, Information Rights Management (IRM) helps organizations protect digital information from unauthorized use. By integrating with a Windows Server 2003 technology called Microsoft Windows Rights Management Services (RMS), IRM enables workers to define how a recipient can use the information contained in a Microsoft Office document. Users can define exactly who can open, modify, print, forward, or take other actions with protected documents. In addition, users can specify an expiration date, after which the document cannot be viewed or acted upon.
To create IRM-protected documents and email messages, the sending user must be using the Professional or Enterprise version of Office 2007. Users of Office Standard 2007 can still read and use IRM-protected documents, but cannot create them or apply policies to email messages. The exchange server 2003 must have the windows Rights Management Services (RMS) to be installed, so that the end users will be able to protect their mail with the information rights management services.