[exim] Telling exim not to log something.

I have a domain that I want to deny all mail for. That's not a problem I
have:

deny domains = domain.com

No biggie, but what I don't want is exim logging every piece of mail
trying to be delivered. It's just filling up my log file and cluttering
up the legit things I want to see. I can tell it not to log anything in
the "deny domains" list to the right of the =?