Setting mailbox permissions
The ability to change the way that messages are processed in a mailbox became a fundamental part of email system functionality a long time ago. Exchange allows you to assign different levels of control over mailboxes to influence the way that messages are delivered to the mailbox, who has the right to send messages from or on behalf of the mailbox (there is a difference), or who has complete control over the mailbox. These assignments can be made by changing mailbox properties through Mail Flow Settings or by assigning different Active Directory permissions to allow other accounts to impersonate or access contents in the mailbox.
Mail flow settings
EMC provides three settings under the Mail Flow Settings tab of a mailbox’s ...