message passes yet scores high on command-line

[Tom Kinghorn]

 Good afternoon list.

I have a strange situation where i get messages getting delivered as 
"not spam" but when testing via command line, it scores well above the 
threshold?

what could cause this:

_*Setup: *_
Suse 11 SP1
Postfix               2.5.6
amavisd-new      2.6.2
clamav               0.96
spamassassin      3.2.5


Thanks

Tom