Dear's, I has been sent email & mark request read & receipt & although the email arrived i did not have the confirmation receipt , please advise.!!!!

Any update? If you have configured your Exchange 2010 organization to enable the tracking for read status for messages, by using the Exchange Management Shell cmdlet Set-OrganizationConfig, you can check if a message has been read. For details, see this post. In addition, here is another article for reference. Hope helps.Noya Lau TechNet Community Support