Under Exchange 2007 we had a journal mailbox. It was really simple to set up MRM to remove entries under the calendar from this journal mailbox every day. In 2010 SP1 it appears that this isn't possible? Can anyone confirm this? When setting up a retention policy, there is no option to select "Calendar". It just lists inbox, journal, spam, deleted items, etc. Is this an oversight or am I missing something? All I need to do under 2010 is set up a policy that removes calendar items from a single mailbox every 24 hours. Can anyone advise?