http://serverfault.com – I would like to have the following functionality in Exchange 2010 on SBS2011. department mailboxes dep1@domain.com, dep2@domain.com personal mailboxes user1@domain.com, user2@domain.com etc. avoid using distribution lists for duplicate emails Scenario user1, user2 are part of dep1, user3, user4, user5 part of dep2 user1 and user2 should see both mailboxes (user1 and dep1) or (user2 and dep1) mailboxes outgoing mail for dep1 should be sent from dep1 and not user1 outgoing mail for user1 should be sent from user1 mailbox I would like to know how to configure mailboxes and Exchange in ord (HowTos)