In an Exchange 2013 environment an account was created for specific legal issues. The user of that account shall be able to read and send mails, but shall not be able to delete or modify any message.
Is there a way to achieve this?
I am aware that external archiving solutions exist. These are already in place. I'm also aware of the Exchange dumpster and recovery bin, but I want to avoid that messages get there in the first place. Deletion and modifications rights shall be removed right in OWA/Outlook/POP/IMAP etc.
Thanks for your ideas.