I correctly bought a SSL certificate for my domain
www.omniservice2.it from Aruba Business on my server with Windows Server 2012 R2.
I correctly installed the certificate in IIS 8 on every site and web application and in fact each of them is correctly reachable from https.
Now, I need to set up the same for my SMTP server in IIS 6. The SMTP works fine with Basic Authentication but obviously I want the credentials to be encrypted. So, I activated the flag "Requires TLS Encryption" in Tab Access under its properties.
Moreover, in the root console I did the following to check the certificate is installed in Personal store (otherwise IIS 6 won't detect it as documentation says) File --> Add/Remove snap-in --> Select Certificates --> Computer account --> Local computer --> OK Under Console Root I see Certificates (Local Computer) --> Personal --> Certificate into which there is correctly the RapidSSL SHA256 CA I bought with the correct expiration date.
The problem is that in section "Secure Communication" I still read "TLS is not available without a certificate" Where also am I supposed to install that certificate so that IIS 6 detects it?