I did about 3 FMS 17 installs since its release and I'm every day more disapointed about SSL certificate management in FMS 17.
In this particuliar case we do have a certificate (Godaddy) dedicated to the exact subdomain we're using for the server and we installed it the right way.
On FMPro the host window prompt is asking for a control and we do have a orange lock on FileMaker 17 client windows. If we check from inside with the fm database getting connection attribute (using Get(ConnectionAttributes)) we have a good response :
[ Peer Certificate ]
commonName: THE EXACT NAME OF SERVER
CA Issuers: Go Daddy Secure Certificate Authority - G2
But still orange lock. Connexion statute is 2 "unable to verify certificate"
To make it fun I try to connect to FMS 17 from FileMaker GO 17 and I got a smiling green lock.
Conclusions may be :-FM Go security is broken and FM Go have a serious security problem
-FMS security or FMS SSL management is broken
-FM client is broken