Adding shared mailbox to Exchange 2007 without creating mailbox enabled user account

You have to use the Exchange Management Shell, open and use thease commands, remember to change the red part.:

new-mailbox -alias “SomeName” -name “Some Name” -database “EXCHANGE\First Storage Group\Mailbox Database” -org “sl.cbs.dk/Samfundslitteratur/Fælles Postkasser” -shared -UserPrincipalName “somename@mail.com”

Get-Mailbox -Identity “Some Name” | Add-MailboxPermission -User “userWhoNeedsRights” -AccessRights “fullaccess”

Get-Mailbox -Identity “Some Name” | Add-ADPermission -User “userWhoNeedsRights” -AccessRights:ReadProperty, WriteProperty -properties “Personal Information” -extendedrights “Send-As”