Nimrod,
I'm currently trying to use rtmps, with Red5 and Stunnel, and it doesn't work with properly signed certificates: When I use a self-signed test certificate, everything works just fine. But when I use a proper certificate (2048 bits from godaddy.com, if that matters), NetConnection.connect just doesn't work - the server doesn't get a connection. https stil works though, and the browser treats the certificate as valid, so it's probably not a problem with the certificate.
I saw some earlier posts on this problem, does anyone have a solution? Any comments are welcome...
Make sure to have the complete certificate chain (your certificate, intermediate certificate and self-signed root certificate) in you .pem file.
It's the second time I see a report about godaddy.com certificate during the last few days. AFAIK SSL implementation in Flash is based on Microsoft libraries. What is the browser you tested SSL with? I guess if MSIE accepts the certificate than Flash should also accept it. When writing "the browser" did you mean MSIE?
BTW: Does your server's FQDN match the subject of your certificate?
Mike