Can't see any difference between encrypted and non-encrypted messages in the smtp.log. I'm expecting something like - found key [key signature] for senderadress .. key verfied by (especially with SMIME keys) .. message en/decrypted ... just some information about the process. I'm also missing some kind of policy setting. As NDA are forcing encrypted mail messaging, a domain based encryption enforcement would be helpful. Some statistics would also be nice.
