[Exim] Sender verify warning as spamassassin trigger

I'm curious about something. I'm currently doing sender verify rejection.
I'm wondering if I switch to sender verification warnings, can I then use
that warning as a trigger for spamassassin to score on? I'm doing envelope
and header verification, in the rcpt and data acls respectively.

Running Exim 4.10 with SA-Exim, and SpamAssassin v2.43.

Thanks,
Steven
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Steven Dickenson <sdickenson@???>
Network Administrator
The Key School, Annapolis Maryland