The Microsoft Exchange Server 5.0 Service Pack 1 ("Service Pack") contains 
updated versions of the software listed herein.  The Service Pack is 
licensed under the same terms and conditions contained in the End User 
License Agreement (EULA) you acquired with the Microsoft Exchange Server 
5.0.  If you do not have a valid license for Microsoft Exchange Server 5.0 
or if you do not agree to be bound by the terms of the EULA, you are not 
authorized to use this Service Pack.