I'd like to give a particular group, for example, "EXCHAdmins", full mailbox access to all new mailboxes created on our Exchange 2007 SP1 server. I know this has to be possible because we already have some groups that show up automatically under full mailbox permissions but this was done before I started and no one seems to remember how that was done. I can currently add the full mailbox permission via Exchange Management Console or Exchange shell once the mailbox is created, but I'd like to be able to have this happen automatically. One possible suggestion I got was to grant ReceiveAs permissions on the mailbox databases, but this does not seem to work. Thanks for the help.