Using classic Outlook for Windows in business environments
Hiya,
I have just come across this issue myself, background its a laptop used by the family business, 2 users and me (IT support).
Firstly I thought it was user related, however I followed the evidence and can't find any deleted emails in the delete items.
Secondly, I thought the email provider had a service problem with its email (BT), not the case.
Thirdly, checked for any automated archiving, nothing and made sure show by conversation is turned off at the client and by the provider (BT).
I have a working theory of why this might occur and it is to do with the OST cache size. They work as surveyors and exchange attachments of considerable size, currently 135MB of attachments and I wonder if it is these that are causing an OST cache corruption issue.
Just a theory with little evidence ....
Any other views?