I setup a CA on a MS 2008 Ent server. I requested the cert within MMC certficate snapin.
I got it installed fine and good. I requested a 1024 but user cert. I am using outlook 2007. Went to tools<trust center< email security and have " encrypt contents and attachments for outgoing messages" checked as well as " add digital signature to outgoing messages" checked. I hit setitng sand chose the cert it saw iut but i keep getting this error message no matter what options I choose.
"microsoft office outlook cannot sign or encrypt this message because your certificate is not valid"