To perform the following procedure, the account you use must be delegated the Exchange View-Only Administrator role and membership in the local Administrators group.
For more information about permissions, delegating roles, and the rights that are required to administer Exchange Server 2007, see Permission Considerations.
To perform this procedure, you must have previously requested a certificate from a certification authority by using the New-ExchangeCertificate cmdlet, and then transmitted that request to a certification authority. The certification authority must have returned a certificate file.