FTP is working on local IP, but not Public

[natebro]

I can connect on local FTP but when I try from the public IP I get errors.
even with all ports 1-5000 forwarded, and fire wall disabled it is still not working.

Code:

Status: Resolving address of MYDOMAINE.com
Status: Connecting to xx.xxx.xx.xx
Warning: The entered address does not resolve to an IPv6 address.
Status: Connected, waiting for welcome message...
Reply: 220 ProFTPD 1.3.5a Server (Sentora FTP Server) [::ffff:192.168.x.x]
Command: CLNT https://ftptest.net on behalf of xx.xxx.xx.xx
Reply: 500 CLNT not understood
Command: AUTH TLS
Reply: 500 AUTH not understood
Warning: Server refused AUTH TLS, trying deprecated AUTH SSL fallback.
Command: AUTH SSL
Reply: 500 AUTH not understood
Error: Server refused FTP over TLS

thanks