So I got some help from EE experts to run a command in Exchange shell to export all mailbox statistics/data.
One of the important things is for me to work out the LastLoggedOnTime so that I can segregate the oldest mailboxes from the actively used ones.
I ran a tool called Inactive Users Tool by Solarwinds and exported it. When I compare the last logged on time of one user from the Exchange shell formula to the data exported from the Solarwinds one, they are different. I have many users who have not logged on for years, but somehow are showing as two days ago in the Shell statistics.
Perhaps the Solarwinds tool is using the Inactive users by looking at a different attribute?
Any ideas on why that would be?
Thanks for helping