Knowledge Base

PRB: PR_SECURITY Property Is Ignored by Exchange Server

Article ID: 177853

Article Last Modified on 2/19/2007

Microsoft Messaging Application Programming Interface
Microsoft Exchange Server 5.5 Standard Edition
Microsoft Exchange 2000 Server Standard Edition

This article was previously published under Q177853

SYMPTOMS

When the PR_SECURITY property is set (either directly through Extended MAPI or indirectly with CDO 1.21's Encrypted or Signed properties), the property has no apparent effect.

CAUSE

The Exchange MAPI providers ignore the PR_SECURITY property. Per MAPI specifications, it is up to the underlying MAPI providers whether or not to honor the PR_SECURITY property, and it is not required.

STATUS

This behavior is by design.

MORE INFORMATION

The Microsoft Developer Network Library (MSDN) topic on PR_SECURITY states the following:

The underlying messaging system chooses whether to use the flag Contained in the PR_SECURITY property.

Additional query words: PR_SECURITY property flag security advanced signed

Keywords: kbapi kbmsg kbprb KB177853