Hello,
In case you have the SBS license, you need not purchase any additional license for Exchange. That license is included in this version and it provides the same functionality as the standalone agent. Refer to the following technote for more information on this:
http://support.veritas.com/docs/274621
Note : If we do not receive your reply within two business days, this post would be marked �assumed answered� and would be moved to �answered questions� pool.
Regards.