[This is more an exim-dev topic]

If there was one agreed hashing mechanism (or probably one defined in 
the config of a few selectable), then running a sha*/md* type hash
over the incoming body as it was received would not put much load
on a mail system (especially as mail systems are I/O limited in 
almost every case).

Anything cleverer is obviously much harder.

Doing this at any other stage would cause rather more additional
I/O.

        Nigel.
--
[ Nigel Metheringham             [email protected] ]
[ - Comments in this message are my own and not ITO opinion/policy - ]






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