REMAIL: X-Discard header line added

[Eric Hughes <hughes@soda.berkeley.edu>]

>Headers are always
>unencrypted, so anyone watching the flow will be able to write a 3 line
>perl script to filter out all of these messages and there is nothing a
>header line can do to hide this discard information.  

The cypherpunks remailers use a little invention called 'header
pasting' where header fields may be added into the header after
receipt but before processing.  These pasted header fields may in
addition be put inside encryption wrappers, thus hiding them from the
outside world.  'Discard' headers may use this technique.  

Eric