How can I force spamassassin to insert something like
X-ASF-Spam-Status: No, hits=1.8 required=10.0 tests=DNS_FROM_RFC_ABUSE,DNS_FROM_RFC_POST X-Spam-Check-By: apache.org
even if a mail is not recognized as spam?
Spamassassin should always insert an X-Spam-Status header by default.
What version of SA are you using and how are you calling it?