fax issue

I'm trying to send fax via my code but I got this exception
javax.mail.MessagingException: 530 5.7.0 Must issue a STARTTLS command first

        at javax.mail.Transport.send0(Transport.java:219)
        at javax.mail.Transport.send(Transport.java:81)

Would anyone tell me why?
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You can try one of these:

just add this line before creating the Property for the session
java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

the only thing you must do in your code to solve the problem is to add the following line:

or look at this thread where the above two are from:

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ocmaraAuthor Commented:
I put it but no change :(
There are more suggestions at that link.
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