Thresholds

When the spam scanner scans the message, it calculates a score which reflects the probability that the message is spam. A message with a high score is more likely to be a spam than a message with a lower score. The spam scanner will mark a message as spam if its score is greater than the threshold. In this section, you can define the score threshold for particular actions to be taken on the message.

• [NOTE:]It is important to make small incremental changes at a time, as large changes may adversely impact performance.

Append Score Headers

If the score of the message is greater than this threshold, a descriptive header is attached to the header of the message. The message will be delivered, without marking it as spam. The score headers are for informational purposes only. By looking at the score headers, one can see which of the various spam tests succeeded on this message. The recommended value is 0.

Mark Message As Spam

If the score of the message is greater than this threshold, the message is marked as spam and is delivered to the recipient. The delivered message will have the spam subject tag. If the Spam Scanning is catching too many non-spam e-mail, raise this number. If too many spam messages are getting through undetected, try lowering this number.

Perform Spam Destiny

If the score of the e-mail exceeds this threshold, the message is subjected to the Spam Destiny defined in the Basic Configuration section above. Depending on the Spam Destiny, the message will be bounced, discarded or passed to the recipient.