In Release 5.0, the Internet certificate that you added to the Notes ID file was used for both S/MIME encryption and electronic signatures. In Release 5.0.1, you do not have to use the same Internet certificate for both encryption and signatures. If you added multiple Internet certificates to your Notes ID file, you can specify one Internet certificate to use for encryption and another Internet certificate to use for signatures. For example, if a third-party CA issues an Internet certificate to use for encrypted mail messages and issues a different Internet certificate to use for signed mail messages, you can add both of these certificates to your Notes ID and you can use one certificate for encryption and the other for signatures.
For information on using dual Internet certificates, see "Using dual Internet certificates for S/MIME encryption and signatures" in the Documentation updates chapter of the Release Notes.