We just recent migrated from Exchange 2010 to 2013. In 2010, our solution to only let certain people schedule meetings in a resource calendar was to only allow those people to send emails to it and hide it from the address book (long story). My problem is that now that it's migrated to 2013 we had an Exec (who's admin usually does the scheduling) was denied because he didn't have permissions to send to that mailbox. Problem is I cannot find anywhere where you can configure delivery restrictions on a resource mailbox. The old settings carried over but I cannot change them. Any advice where to find these setting would be greatly appreciated!