|Important||This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.|
PidTagOriginCheck Canonical Property
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Contains a binary verification value that enables a delivery report recipient to verify the origin of the original message.
This property provides a means for a third party, such as a message transfer agent (MTA) or a messaging user receiving a delivery report, to verify the submitted message's origin. If present on a received message, this property should be copied onto any delivery report generated in response to the message.