We have an on prem exchange 2013 server and an O365 account for our Skype for Business. Our mail flows in and out through O365.
I need a trace report showing ALL mail flowing out and who sent it. The problem I have is that I have to pick a domain or a mailbox or something and I need ALL mail flowing to O365 from our on prem server.
The trace report isn't helping me so I'm thinking powershell.
Can anyone help with a powershell that will show me all mail flowing out from our on prem to our O365 connector and who the sender was?