24.9.1 Finding a User’s Private or Public Key

When a Communications Express Mail user has multiple private-public key pairs and multiple email addresses (primary, alternate, or alias addresses), it is possible that their keys are associated among their addresses. In this case, it is important that the S/MIME applet finds all the keys for verification purposes. Use the usercertfilter parameter in the smime.conf file to define a filter that creates a list of mail addresses for a key’s owner at the time the public key’s certificate is checked against a CRL. See usercerfilter in 24.5 Parameters of the smime.conf File for more information.