[Mimedefang] Help with local mail

[Rick Knight]

I need to tell MIMEDefang or SpamAssassin to not scan locally 
originating mail. Is this done with whitelist_from or with a local rule 
or something else? If local rule, how do I structure it?

I have sendmail-8.12.7 with MIMEDefang-2.29, SpamAssassin-2.43 and 
ClamAV-0.54 on RH 6.2.

Thanks,
Rick Knight
(rick at rlknight.com)