The resource / generic email addresses should now have permissions set correctly for the ownersonly . You will need to add these mailboxes as per the instructions http://www.lifesci.dundee.ac.uk/services/lsc/how-tos-outlook-2010-win/additional-mailboxes.

If you wish to delegate permissions further please follow the instructions http://www.lifesci.dundee.ac.uk/services/lsc/how-tos-outlook-2010-win/grant-access-your-mailbox-or-folder-delegate