I have a disabled user I am getting ready to delete. I went through exchange to see if had full access permissions on any mailboxes. I ran the command Get-Mailbox | Get-MailboxPermission -User "Username". The results showed a few mailboxes that this person had full access permissions. I went into the emc found one of the mailboxes and clicked on "Full Access permissions". I see users, but I did not see the user I want to remove.
I then the command Get-MailboxPermission "Mailbox" and did see his username with full access.
My question is why did he not show up in the emc has having full access permission?