NOTE The Managed Folder Mailbox Policy needs to exist or be created before you use the preceding in Software

Maker QR Code JIS X 0510 in Software NOTE The Managed Folder Mailbox Policy needs to exist or be created before you use the preceding

command to assign it to a user Messaging Records Management can be turned off for a particular mailbox in cases where the mailbox may not be used for a period of time, such as when a user is on vacation This is called Retention Hold Start and end dates can be specified when enabling Retention Hold to make the hold effective for a particular period To enable Retention Hold for a mailbox using the Exchange console, follow these steps: 1 Select the mailbox from the Recipient Configuration | Mailbox node 2 In the Actions pane, click the Properties link 3 From the Mailbox Settings tab, select Messaging Records Management and click Properties

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4 Check the option Enable retention hold for items in this mailbox 5 Optional: Check Start date and enter a particular start date and time when you want the Retention Hold to begin Check End date and enter a particular end date and time when you want it to end 6 Click OK twice to close the mailbox properties dialog box To enable Retention Hold on a mailbox using the shell, use the following command:

Set-Mailbox "Joe Adams" RetentionHoleEnabled $true StartDateForRetentionHold "7/16/2007" EndDateForRetentionHold "7/27/2007"

NOTE If a time is not specifically entered for either the start or end date for Retention Hold, it is

scheduled to begin and end at 12:00 AM Optionally, a specific time can be entered with the start and/or end dates

Storage quotas are an important tool for managing mailbox and mailbox store sizes These prevent runaway growth of both mailboxes and mailbox stores, and they also prevent situations where mailboxes are attacked by a deluge of messages, perhaps of a large size, which can make the mailboxes (and thus the mailbox store) grow quickly to very large sizes If left uncontrolled, a mailbox store can quickly grow to consume a large amount of free disk space, potentially resulting in a situation where the disk volume runs out of free space When this happens, the mailbox store is dismounted Whether intentional or not (or resulting from a virus or worm outbreak), this can effectively result in a denial of service, and therefore should be considered a security issue Mailboxes on a mailbox store inherit the mailbox quota limits configured on the store Ever so often, you may need to configure individual mailboxes with limits that are either higher or lower than the mailbox limits on the mailbox store on which they reside Three different mailbox quota limits can be configured for a mailbox: Issue Warning Quota The Issue Warning Quota is the first quota limit a mailbox can reach When a mailbox reaches this limit, Exchange issues a warning message to the mailbox, without impacting the user s ability to send or receive messages As such, it can be thought of as a soft quota Prohibit Send Quota When the mailbox size reaches the Prohibit Send Quota, Exchange stops the user from sending messages The user does continue to receive inbound messages, though Prohibit Send and Receive Quota This is the final frontier, the largest size to which a mailbox can grow When the mailbox reaches this limit, a user can neither send nor receive new messages As such, this can be thought of as a hard quota or limit To configure a mailbox to bypass the mailbox storage quotas on the mailbox store using the Exchange console, follow these steps (as shown in Figure 10-8): 1 Select the mailbox from the Recipient Configuration | Mailbox node 2 In the Actions pane, click the Properties link

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3 From the Mailbox Settings tab, select Storage Quotas and click Properties 4 By default, the option Use mailbox database defaults is checked To configure the mailbox to bypass the mailbox store default, uncheck this box 5 To configure the Issue Warning Quota, check Issue warning at (KB) Type a value in the corresponding field