[Evolution] spamassassin write to headers?

["Edward J. Weinberg" <nylug q5comm com>]

I installed Evo in Mandrake 10.1 and it installed and configured
spamassassin for me.  I was wondering where the actual command to call
Spamassassin was?  I would probably like to change it to spamc.  

I would like to get spamassassin to write the tests failed in the header
of each email. Can I do that?  I have done it on servers.