cing
 the MIME requirements for the specified headers.  In addition, these
 header fields must be folded (wrapped) before being sent if they
 exceed the line length limitation for the transport (1000 bytes for
 SMTP).  Received headers may have been folded.  The application is
 responsible for folding and unfolding headers as appropriate. <p>

 The current implementation supports the System property
 <code>mail.mime.ignorewhitespacelines</code>, which if set to true
 will cause a line containing only whites