With the new way of creating SSL certs for Domino a new opportunity occurred to me and actually it worked great. Because we create the certificates using OpenSSL the generated Key and certificate can actually be used on the same server to setup a FTPS server. Saidly because the Domino FTP server on OpenNTF.org doesn’t support FTPS I had to use the FileZilla server the setup was super simple.
Run the setup
go into settings and enable FTP over SSL select your .Key file and your certificate file that you got back from your certifier. Also check the other option to force all connections to the server to be FTPS.
And now you have a FTPS server that can deliver external content to you Domino server. The last thing you need to setup is the users and groups that should be able to connect to the server.
Update: Paul Farris commented that this is an SSL based FTP server not an SSH based so the real name should be FTPS not sFTP.