We are using Lotus Domino 8.5.3(FP6). iNotes user can access web mail by HTTP protocol. Traveler is configured on separate server and android users are also using HTTP to connect. We want to enable HTTPS for iNotes. using certsrv.nsf , I created self certificate, and placed in the domino server data folder & enabled ssl settings, but getting this error on client browser.

Text
This site can’t provide a secure connectionmail.XYZ.com uses an unsupported protocol. ERR_SSL_VERSION_OR_CIPHER_MISMATCH Hide details Unsupported protocol The client and server don't support a common SSL protocol version or cipher suite.
Text