In a Microsoft Exchange Server 2007 environment, you are running Microsoft Office Outlook in online mode to access the mailbox.
You perform a "Mark All as Read" operation against a folder that includes unread e-mail messages.
You move all messages from this folder to the Personal Folder file (.pst).
In the .pst file, you permanently delete a moved message by pressing SHIFT + DEL. This message included a read receipt request.
In this scenario, a non-read report message is sent unexpectedly to the sender who requested the read receipt for the deleted message even if you have configured Outlook to not respond the read recipient. The non-read report message resembles the following:
From: SenderSent: date, TimeTo: ReceiverSubject: Not read: subjectYour message was deleted without being read on date, time
This problem occurs because the MSGFLAG_RN_PENDING flag and the MSGFLAG_NRN_PENDING flag in the PR_MESSAGE_FLAGS property are not cleared when you perform the "Mark All as Read" operation.
To resolve this problem, install Update Rollup 7 for Exchange Server 2007 Service Pack 1 (SP1) on the Exchange server. For more information about Update Rollup 7 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic: