S/MIME: alternative message for secure email?

From: Andrew Hopper (Andy.Hopper_at_mindspring.com)
Date: 09/10/03 

Date: Wed, 10 Sep 2003 09:09:09 -0400

I have an application that will send secure email to a group of recipients
who have registered their public keys with the server. If a user tries to
open the encrypted email on a machine that does not have their certificate
installed, they will see a standard error message stating that they do not
have the correct digital ID, etc. I would prefer to show a custom message
that details how to obtain the correct digital ID. Does anyone know how to
include inside an email a message that will be shown in Outlook/Outlook
Express in the case of a decryption failure in a manner similar to
multipart/alternative for text/HTML email?

-Andy Hopper

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