This is not a problem with the Certifcate, per se. When the Certificate is "authenticated" it goes back up the chain to the CA, which is the issuing authority. Outlook, by default, only knows of a few "authentic" CAs such as VeriSign, Thawte, etc.
You have a few options: 1) Click Yes. Your communications are SSL encrypted. 2) Tell Outlook (every Outlook) that this CA is known good. 3) Buy a certificate from a "known good" CA. #2 consists of.. Start Settings Control Panel InternetOptions Content Certificates Trusted Root Certification Authorities. Import YOUR CA into this area on each and every single Outlook client. Then, as the client goes up the chain it'll find your "authentic and known trusted CA" and you won't get that messages any more. -Mike/Szii --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html