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Vernon Schryver <vjs@calcite.rhyolite.com> writes:

> The DCC uses checksums of things.  There is no reasonable way I can
> see to get regular expressions into the mix except as some kind of
> pre- or post-filter.  That would make no sense at all with dccproc
> since dccproc is supposed to be used with procmail and its expressions.
> Putting reg-exps into dccm would probably be a very bad idea 
> for speed and portability reasons.

Understood.  I wonder if you could do a checksum on part of an
address.  For example, if my address looked like:

        listname-1234567.890@example.com

Could you compute a sum on the part minus the (presumed) VERP tag,
like:

        listname@example.com