Russ wrote:

I am trying to use S/MIME with Outlook 2003. i can send out an
encrypted message to an outside account that is using Outrlook
Express, but how does the OE client reply to the encrypted message?
The error states that I need a a digital certificate. If I reply to
the message that came from the secure email address, can't I just use
the key that came from the other person?

In order to reply to an encrypted message, the replier must have a copy of
your public key if they want the response encrypted as well. In other
words, you must have sent them a digitally-signed message first before
sending them the encrypted message. Did you do that?
--
Brian Tillman