User has upgraded to office 2007 recently.
This is a problem where some emails in the **INBOX** and some PST are all strangely showing "This message
has not been sent" as if they were in draft mode. They were never sent from the user but received from other users both inside and outside of the organization.set
a new ost rename msmapi,repair office, try all the outlook switch /resetfolders; /cleanviews but no luck.
ANy help will be appreciated.