[Mimedefang] X-Scanned-By vs syslog

[Matt Selsky]

mimedefang.c calls

smfi_addheader(ctx, "X-Scanned-By", SCAN_BODY);

to add the X-Scanned-By header to each message that gets scanned.  Is
there any way to avoid this from getting into syslog?  smfi_addheader()
is logging at the mail.info level and it is generating too much traffic.  
I'd rather not comment out the smfi_addheader line in mimedefang.c

What other options do I have?