I've created an Exchange 5.5 email account called Home Office. I want several different people with different NT login accounts to access this mailbox. I created a Home Office Local Group and assigned the email users to this group. In the Exchange Administrator program, I made the Primary NT account the Home Office Local Group. In the Permissions section, I granted the Home Office Local Group Ownership permission to the mailbox. Despite all this, when I create a mail profile on one of the users workstations, with the user logged into the Network, and try to log into Outlook with the profile, I keep getting a " You do not have permission to logon " error message. I have also synchronized all the Domain Contollers. What am I doing wrong? Is the Exchange Server not accepting the Permission changes or what??