Hello,
A users Outlook client updates the time recieved on e-mails in his inbox when he replies or forwards them.
And a bunch of mail, which appers to be of random dates, updates every night between 02:00 and 03:00.
The picture below shows an example of this. All the mails with the timeline "fr 17-04-2015 02:33", were actually mails recieved 09-04-2015.
If we open these affected mails, the time recieved is shown correctly.
If we search for the same e-mails in OWA, they are displayed with the correct time recieved.
Is this a bug in his Outlook, or a simpel checkbox that was unintentionally checked (Like "Update date if changes are made to message")?
This started about a week ago.