There are a number of ways to verify the result of AS Engine scanning:
1) Enable debug as follows:
# diagnose debug application spamfilter 255
# diagnose debug enable
2) In the mail header of scanned email the result can be seen in the X-ASE-REPORT field.
3) In spamfilter log. If the AS Engine detects email as SPAM it will log an "email is reported as spam by ASE" message in the log. In addition, the tracker ID identifies the reason for the detection.