How to avoid localhost mails tagged as spam

[GoodnGo.de (R) Zentrale]

Hello List,

I am using SpamAssassin version 3.2.5
Postfix, amavis, clamd, *nix 


My question:
All emails from localhost are tagged als ***Spam*** in the subject line.

How can I avoid this ?
Please help me.

(Header-Merssage:Received: from localhost (unknown [127.0.0.1]))

Regards,
Oliver