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[Adam Bernstein <address@concealed>]

> > this is weird to me because we are basically doing unlimited dkim
> > signing on all of our outbound mail that originates from our listserver,
> > and we have quite a large number of messages going out constantly, and
> > the dkim-filter process is hardly using any CPU at all (and yes, it is
> > actually signing).

Oops, wait, I've just looked at dkim-milter, and I see it uses a compiled C 
program, while DKIMProxy is all Perl.  So dkim-milter is surely much more 
efficient, and we will give it a try very soon and hope for great results. 
 Thanks for the pointer!

    adam