Applies to: Exchange Server 2007
Topic Last Modified: 2007-06-12

Use the Custom Attributes dialog box to view or change the custom attributes for a recipient.

You can use custom attributes to store information about your users that does not easily fit into the existing fields. For example, you can use a custom attribute to store the cost center or employee number for your users.

You can also use custom attributes to create recipient conditions for dynamic distribution groups, e-mail address policies, and address lists.

Microsoft Exchange Server 2007 provides 15 custom attributes for each recipient. To configure a custom attribute for a recipient, use the text box that corresponds to the custom attribute you want.

Note:
If you have mailboxes in your organization that were previously upgraded from Exchange Server version 5.5, Custom Attribute 10 may still have a value of NTDSNoMatch. This value indicates that the mailbox should not be matched to a corresponding Active Directory directory service user account during the upgrade process. If the upgrade of Exchange Server 5.5 mailboxes is complete, you can use this custom attribute for another purpose.