Hi,
we do see a behaviour in Advanced Find where I'm not sure if it is a bug or "by Design". This only happens when online mode of Outlook is used. Please do not advise to use Cached Moded as we are talking about a Remotedesktop-Services environment and it is not possible to use Cached Mode here.
When we use "Advanced Find" in Outlook to find sent Messages by the name of the sender we are not able to just enter for example the last name of the sender and get results. As soon was we use the button "Sent to" and choose an account from the GAL or own contacts we will see results. The issue is: Not all messages sent people are in the GAL or personal contacts. So the search is useless at all.
Search with just the last name - no results:
Search with User selected from the GAL (or local contacts) we will get results:
Is this a bug or "by Design