[SA-exim] Configuration for 'spamc' call

[Martin Rebenstorff]

Hello,

how can I configure the call for spamc. I need the argument "-u mail",
because my bayesian database is configured for user mail.
I think, sa-exim call spamc with user Debian-exim (default).

I'm running debian (sarge), exim4 4.30-3, spamassassin 2.61-2 and
sa-exim 3-1-2.

Thanks in advance!

Martin