Postfix Outgoing SMTP SSL/TLS TCP Port 465 Configuration

Outgoing server is unable to receive mail with the following configuration:
RelayHost servername:465
file smtp_auth has servername:465 :password
The file was processed using postmap smtp_auth
postmap reload done

The error message is: server unavailable or unable to receive mail.
I can telnet into the server using port 465.
Please help.