Can't add exchange trusted subsystem user
I'm trying to run a powershell script to export .pst files to my READYNAS. It is synced to Active Directory. When I run the script I get the error do not have permissions. Just to test I I ran this on one of our other servers and it worked when adding exchange trusted subsystem user. But on the READYNAS I can't see to add this user. I think it may be searching in the wrong OU. Is there anyone I can add this user? Or a second OU for it to search for in?