Right, so clearly your email is incorrectly hitting the "ALL_TRUSTED" rule which is lowering its score by 2.4 points. Otherwise, it would have been above your kill level of 6. Apparently there is some means of getting ALL_TRUSTED to work properly but personally I've never been able to do so (even despite setting up my trusted and internal networks in local.cf as per the documentation), and so I have just disabled this rule entirely.
I'd certainly recommend disabling the rule by setting: score ALL_TRUSTED 0 in your user_prefs or local.cf file.
Which won't solve the problem of the trust path being incorrect and causing SA to check the wrong hosts against blacklists, etc.
If he can get his trust path working, he's much better off doing so than just masking the symptom of ALL_TRUSTED misfiring.
I would *not* recommend disabling ALL_TRUSTED except as a last resort.
-- Kelson Vibber SpeedGate Communications <www.speed.net>
