I'd like to create an account (named "Test")and allow this account have READ permission on multiple users' mailboxes(and calendars). I've read the article on http://technet.microsoft.com/en-us/library/aa996343.aspx. I know I can use the following command: Add-ADPermission -Identity "Mailbox Store" -User "Trusted User" -ExtendedRights Receive-As Question #1: What if I want to add this permission to ALL mailboxes? Question #2: What if I want to add this permission to a group of mailboxes? (such the users in an OU or a department)? Question #3: Is this command alone enough the give the READ permissions to "Test" account? Do I have to make "Test" account a "View Only Administrator" as well? My ultimate goal is to use least commands to give least permission to the "Test" account. So the "Test" account canread other users' calendar information via WebDAV interface. Thank you very much! Michael P.S. On Exchange 2003, I can do the following to assign "receive-as" permission on mailstore level. But I couldn't find an equivalent way on Exchange 2007. Step 0 Make "Test" a View-Only Administrator Step 1 On the exchange servier, open the Exchange System Manager.Step 2 Navigate to Administrative Groups > First Administrative Group > Servers > First Server >Mailbox Store.Step 3 Right click the mailbox store and choose Properties.The Properties window displays.Step 4 Choose the Security tab and click Add.Step 5 In the Enter the object name to select field, enter the name of the account that you want to use.Step 6 Choose Receive As to grant Receive As permissions to this administrator account on all mailbox storesagainst which you need to access calendar information.Step 7 Click OK.The account that you set up now has full permissions to log in to the mailbox store. Ref: http://support.microsoft.com/default.aspx?scid=kb;EN-US;821897

Hi, I understand that you would like to grant one account have permission to view all mailboxs calendar and a group of mailboxs calendar. Regarding this issue, please run the following command to resolve this issue. Grant Test have permission to all mailbox Get-mailbox | Add-MailboxPermission user Test accessright Fullaccess Grant Test have permission to a group of users Get-mailbox OrganizationalUnit group name| Add-MailboxPermission user Test accessright Fullaccess Thanks Allen

Hello, Thanks for the info...I had an additional question: can this command work with groups? For example, I have a group of about 10 members who require access to all mailboxes. Instead of granting each user fullaccess as explained above can I apply it to a group? I didn't see -group as an option....can someone please advise? Thanks.

Hi, Of course, the above command can also work with the group. You just use user Group to replace user Test The example: Get-mailbox OrganizationalUnit group name| Add-MailboxPermission user Group accessright Fullaccess Please note: The User parameter not only can specify the single user mailbox but also include Group user Thanks Allen