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Re: FTP upload by email

I should also add that there will have to be some kind of time sensitivity
or other uniqueness test.  Otherwise some malicious intermediary could
intercept the message and save it for a while and then resubmit it into the
mailstream.  The destination would authenticate the message and old data
would be posted to wherever.  A way to guard against this would be to
include time information in the encrypted portion of the file set.  e.g.
putting a serial number or time stamp in the file and having the script
reject any material with an older serial number than the current version.

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