Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-07-30

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to configure the minimum PIN length for your mail-enabled Microsoft Exchange Server 2007 recipients who are enabled for Unified Messaging (UM).

Outlook Voice Access is used by callers who dial in to a subscriber access number that is configured on a UM dial plan. By using Outlook Voice Access, UM-enabled users can access their voice mail, e-mail, calendaring, and personal contact information that is located in their Exchange 2007 mailbox. However, before the caller can access their mailbox, they must enter a PIN so that they can be authenticated by the system.

You can configure PIN settings and requirements and perform PIN management tasks by configuring a UM mailbox policy. The settings that you configure on a UM mailbox policy will apply to all UM-enabled users who are associated with the UM mailbox policy.

There are several PIN-related settings. One of the most important settings is the minimum PIN length. The minimum PIN length setting specifies the minimum number of digits that a mailbox PIN can include. The range is 4 through 24, and the default is 6.

If you make a change to the minimum PIN length value, existing subscribers are prompted to enter a new PIN that contains the new minimum number of digits before they can continue.

Before You Begin

To perform the following procedures, the account you use must be delegated the Exchange Organization Administrator role.

For more information about permissions, delegating roles, and the rights that are required to administer Exchange 2007, see Permission Considerations.

Also, before you perform these procedures, confirm the following:

  • A UM dial plan has been created.

  • A UM mailbox policy has been created.


To use the Exchange Management Console to configure the minimum PIN length

  1. In the console tree of the Exchange Management Console, expand the Organization Configuration node, and then click the Unified Messaging node.

  2. On the UM Mailbox Policies tab, select the UM mailbox policy that you want to manage, and then click Properties in the action pane.

  3. On the UM mailbox policy Properties page, click the PIN Policies tab.

  4. On the PIN Policies tab, next to Minimum PIN length, enter a value between 4 and 24.

  5. Click OK to save your changes.

To use the Exchange Management Shell to configure the minimum PIN length

  • Run the following command:

    Copy Code
    Set-UMMailboxPolicy -Identity MyUMMailboxPolicy -MinPINLength 8

For more information about syntax and parameters, see Set-UMMailboxPolicy.

For More Information

For more information about Unified Messaging PINs, see the following topics: