5.14. Granting Full Access to Mailboxes
Problem
You need to give one user complete access to another's mailbox.
Solution
Using a graphical user interface
Log on to any machine in your domain that has the Exchange management tools installed.
Open the ADUC snap-in (Users and Computers.msc).
Locate the user for whom you want to grant access.
Right-click the target user and choose the Properties command.
Switch to the Exchange Advanced tab and click the Mailbox Rights button.
In the Permissions dialog box, click the Add button.
In the Select Users, Computers, or Groups dialog box, select the user or group to which you want to delegate access, then click OK.
In the permissions list of the Permissions dialog, make sure the Allow checkbox for Full mailbox access is checked.
If you're granting access to an administrator, click the Advanced button.
Click the Add button.
In the Select Users, Computers, or Groups dialog box, select the user or group to which you want to delegate access, then click OK.
Check the Full mailbox access entry in the Allow column, then click OK.
Click OK.
Click OK to close the Properties dialog box. (Note that you may have to wait for these permissions to replicate before the new permissions take effect.)
Discussion
You can assign delegate access to individual mailbox folders using the Outlook user interface; this is commonly done to give executive assistants access to their principals' calendars without giving them access to messages contained in the Inbox. However, Outlook's ...