We currently are running version 3.3.2439, we currently have relay set to Nobody, which requires authentication, we would like to be able to add the account that a message is being sent by as a header and/or restrict messages to local from addresses, ie: lets say smith.com is hosted on our server, we would like it to not allow john@smith.com to login and send 'from' john@doe.com , we would also like it to add a header to reflect the sending account, ie: john@smith.com logs in and sends a message 'from' customerservice@smith.com it should add a header like "SmarterMailAccount: john@smith.com". Can smartermail do that?