My server will require FTPS over TSL/SSL explicit beginning in September but that's not one of the choices in drop-down menu. I talked to Yahoo for about 1/2 hour and they couldn't troubleshoot it for me. I tried all the choices in the menu but I keep getting the error message:

"Peer certificate cannot be authenticated with known CA certificates. [60] Additional information: SSL certificate problem, verify that the CA cert is OK. Details:
error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed."

I have passive mode off and I've tried ports 21 and 22.

Any help will be appreciated!