Choosing S/MIME over PGP/MIME
I currently run PGP Universal server 3.0 and until recently it was configured to use 'automatic' as the signing format for outbound emails which would subsequently default to PGP/MIME even though users had X.509 certs available. What I'm trying to do is configure Universal server to send signed and encrypted emails using S/MIME, and where it cannot find a suitable X.509 recipient key, fall back to using PGP/MIME.
I can change the encoding format for signed emails under the send (encrpyt/signed) action to S/MIME, but am looking for a way to ensure the message is also encrypted with the X.509 key when available, else try PGP/MIME, else go clear.
Hope this makes sense.
Grateful for any assistance.