I am migrating Symantec Mail Security for Microsoft Exchange (SMSMSE) to another Exchange server, or I am setting up a new Exchange server in my organization. Can I use the same SLF license file to register the product on my new server?
One of the following applies to you:
The same SLF license file can be installed in Symantec Mail Security for Microsoft Exchange (SMSMSE) on multiple Exchange servers within your organization.
Symantec's licensing for SMSMSE works on a per-seat basis and not per-server, meaning that you can have as many servers with SMSMSE installed as you like within your organization, providing that your license covers the number of seats you have.