[Mimedefang] MimeDefang errors

[Thomas Barnes]

Oh, those sneaky. . .  err. . umm (you know-whats)  sending spam  with a 
forged from address.  Slipped right past my radar.

I put in my sa-mimedefang.cf a whitelist of *@barnestormer.com  but when 
they forge a return from address , I get a -100 score and the mail is 
passed. I was thinking that tweaking a RCVD_HELO_IP_MISMATCH or 
something similar might fix that.

It seems like it should be easy to fix; it is just the more I think of 
it the more complex the task is (forest through trees) anyone have an 
idea?  Is this a fix for sendmail, sa or mimedefang.?

Thanks