Permitting Others to Access a Mailbox
Occasionally, users need to access someone else's mailbox, and in
certain situations, you should allow this. For example, if John is
Susan's manager and Susan is going on vacation, John might need access
to her mailbox while she's away. Another situation in which someone
might need access to another mailbox is when you've set up
special-purpose mailboxes, such as a mailbox for [email protected] or a mailbox for [email protected].
You can grant permissions for a mailbox in two ways:
If you want to grant access to a mailbox and its contents but not
grant Send As permissions, use the Manage Full Access Permission
Wizard. In the Exchange Management Console, right-click the mailbox you
want to work with and then select Manage Full Access Permission. In the
Manage Full Access Permission Wizard, click Add, and then use the
Select User Or Group dialog box to choose the user or users who should
have access to the mailbox. To revoke the authority to access the
mailbox, select an existing user name in the Security Principal list
box and then click Remove. Click Manage to set the desired access
permissions.
If you want to grant Send As permissions, use the Manage Send As
Permission Wizard. In the Exchange Management Console, right-click the
mailbox you want to work with and then select Manage Send As
Permission. In the Manage Send As Permission Wizard, click Add, and
then use the Select Recipient dialog box to choose the user or users
who should have this permission. To revoke this permission, select an
existing user name in the Security Principal list box and then click
Remove. Click Manage to set the desired Send As permissions.
In the Exchange Management Shell, you can use the Add-MailboxPermission and Remove-MailboxPermission cmdlets to manage full access permissions. Samples Example 1 and Example 2
show examples of using these cmdlets. In these examples, the
AccessRights parameter is set to FullAccess to indicate you are setting
full access permissions on the mailbox.
Example 1. Adding full access permissions
Syntax
Add-MailboxPermission -Identity UserBeingGrantedPermission
-User UserWhoseMailboxIsBeingConfigured
-AccessRights 'FullAccess'
Usage
Add-MailboxPermission -Identity
'CN=Jerry Orman,OU=Engineering,DC=cpandl,DC=com'
-User 'CPANDL\boba'
-AccessRights 'FullAccess'
Example 2. Removing full access permissions
Syntax
Remove-MailboxPermission -Identity 'UserBeingGrantedPermission'
-User 'UserWhose
MailboxIsBeingConfigured' -AccessRights 'FullAccess'
-InheritanceType 'All'
Usage
Remove-MailboxPermission -Identity 'CN=Jerry Orman,
OU=Engineering,DC=cpandl,DC=com'
-User 'CPANDL\boba'
-AccessRights 'FullAccess' -InheritanceType 'All'
If you want to allow another user to send messages as the mailbox
owner, you can do this using the Manage Send As Permission Wizard. In
the Exchange Management Console, right-click the mailbox you want to
work with and then select Manage Send As Permission. In the Manage Send
As Permission Wizard, click Add, and then use the Select User Or Group
dialog box to choose the user or users who should have Send As
permission on the mailbox. To revoke Send As permission, select an
existing user name in the Security Principal list box and then click
Remove. Click Manage to set the desired access permissions.
In the Exchange Management Shell, you can use the Add-ADPermission
and Remove-ADPermission cmdlets to manage Send As permissions. Samples Example 3Example 4
show examples using these cmdlets. In these examples, the
ExtendedRights parameter is set to Send-As to indicate you are setting
Send As permissions on the mailbox. and
Example 3. Adding Send As permissions
Syntax
Add-ADPermission -Identity UserBeingGrantedPermission
-User UserWhoseMailboxIsBeingConfigured
-ExtendedRights 'Send-As'
Usage
Add-ADPermission -Identity 'CN=Jerry
Orman,OU=Engineering,DC=cpandl,DC=com'
-User 'CPANDL\boba'
-ExtendedRights 'Send-As'
Example 4. Removing Send As permissions
Syntax
Remove-ADPermission -Identity UserBeingRevokedPermission
-User UserWhoseMailboxIsBeingConfigured
-ExtendedRights 'Send-As'
-InheritanceType 'All' -ChildObjectTypes $null
-InheritedObjectType $null -Properties $null
Usage
Remove-ADPermission -Identity 'CN=Jerry
Orman,OU=Engineering, DC=cpandl,DC=com'
-User 'CPANDL\boba' -ExtendedRights 'Send-As' -InheritanceType 'All'
-ChildObjectTypes $null -InheritedObjectTypes $null
-Properties $null
Note
Another way to grant access permissions to mailboxes is to do so
through Outlook. Using Outlook, you have more granular control over
permissions. You can allow a user to log on as the mailbox owner,
delegate mailbox access, and grant various levels of access.
Forwarding E-Mail to a New Address
Except when rights management prevents it, any messages sent to a
user's mailbox can be forwarded to another recipient. This recipient
can be another user or a mail-enabled contact. You can also specify
that messages should be delivered to both the forwarding address and
the current mailbox.
To configure mail forwarding, follow these steps:
-
Open the Properties dialog box for the mailbox-enabled user account by double-clicking the user name in the Exchange Management Console.
-
On the Mail Flow Settings tab, double-click Delivery Options.
-
To remove forwarding, in the Forwarding Address panel, clear the Forward To check box.
-
To add forwarding, select the Forward To check box and then click
Browse. Use the Select Recipient dialog box to choose the alternate
recipient.
-
If messages
should go to both the alternate recipient and the current mailbox
owner, select the Deliver Messages To Both Forwarding Address And
Mailbox check box. (See Figure 3.) Click OK.
Setting Storage Restrictions on an Individual Mailbox
You can set storage restrictions on multiple mailboxes using global
settings for each mailbox database or on individual mailboxes using
per-user restrictions. Global restrictions are applied when you create
a mailbox and are reapplied when you define new global storage
restrictions. Per-user storage restrictions are set individually for
each mailbox and override the global default settings.
Note
Storage restrictions apply only to mailboxes stored on the server.
They don't apply to personal folders. Personal folders are stored on
the user's computer.
You set individual storage restrictions by completing the following steps:
-
Open the Properties dialog box for the mailbox-enabled user account by double-clicking the user name in the Exchange Management Console.
-
On the Mailbox Settings tab, double-click Storage Quotas. This displays the Storage Quotas dialog box, shown in Figure 4.
-
To set mailbox storage limits, in the Storage Quotas panel, clear
the Use Mailbox Database Defaults check box. Then set one or more of
the following storage limits:
-
Issue Warning At (MB)
This limit specifies the size, in megabytes, that a mailbox can reach
before a warning is issued to the user. The warning tells the user to
clean out the mailbox.
-
Prohibit Send At (MB)
This limit specifies the size, in megabytes, that a mailbox can reach
before the user is prohibited from sending any new mail. The
restriction ends when the user clears out the mailbox and the mailbox
size is under the limit.
-
Prohibit Send And Receive At (MB)
This limit specifies the size, in megabytes, that a mailbox can reach
before the user is prohibited from sending and receiving mail. The
restriction ends when the user clears out the mailbox and the mailbox
size is under the limit.
Caution
Prohibiting send and receive might cause the user to think they've
lost e-mail. When someone sends a message to a user who is prohibited
from receiving messages, an NDR is generated and delivered to the
sender. The original recipient never sees the e-mail. Because of this,
you should rarely prohibit send and receive.
-
Click OK twice.
Setting Deleted Item Retention Time on Individual Mailboxes
Normally, when a user deletes a message in Microsoft Office Outlook,
the message is placed in the Deleted Items folder. The message remains
in the Deleted Items folder until the user deletes it manually or
allows Outlook to clear out the Deleted Items folder. With personal
folders, the message is then permanently deleted and you can't restore
it. With server-based mailboxes, the message isn't actually deleted
from the Exchange database. Instead, the message is marked as hidden
and kept for a specified period of time called the deleted item retention period.
Note
The standard processes can be modified in several different ways. A
user could press Shift+Delete to bypass Deleted Items. As an
administrator, you can create and apply policies that prevent users
from deleting items (even if they try to use Shift+Delete). You can
also configure policy to retain items indefinitely.
Default retention settings are configured for each mailbox database
in the organization. You can change these settings, or override the settings on a per-user basis by completing
these steps:
-
Open the Properties dialog box for the mailbox-enabled user account
by double-clicking the user name in the Exchange Management Console.
-
On the Mailbox Settings tab, double-click Storage Quotas. This displays the Storage Quotas dialog box, shown previously in Figure 4.
-
In the Deleted Item Retention panel, clear the Use Mailbox Database Defaults check box.
-
In the Keep Deleted Items For (Days) text box, enter the number of
days to retain deleted items. An average retention period is 14 days.
If you set the retention period to 0 and aren't using policies that
prevent deletion, messages aren't retained and can't be recovered. If
you set the retention period to 0 but are using policies that prevent
deletion, the messages are retained according to the established
policies.
-
You can also specify that deleted messages should not be permanently
removed until the mailbox database has been backed up. This option
ensures that the deleted items are archived into at least one backup
set. Click OK twice.
Note
Deleted
item retention is convenient because it allows the administrator the
chance to salvage accidentally deleted e-mail without restoring a
user's mailbox from backup. I strongly recommend that you enable this
setting, either in the mailbox database or for individual mailboxes,
and configure the retention period accordingly.