Steve Paulsson wrote:

I can't send any messages from Outlook; I get the message"Microsoft
could not sign or encrypt this message because you have no
certificates which can be used to send from the e-mail address any
of my e-mail addresses".

It would help if you were to describe all the settings you have on the
Security tab of ToolsOptions and the dialogue pages that are under the
Settings button there as well.
--
Brian Tillman